{ "row": "ata-3i-atlas-search", "entity": "ata-3i-atlas-search", "address": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "addresses": [ { "address": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "slug": "ata-3i-atlas-technosignature-search-paper-aio-20261106", "addr_id": "ADDR-f01db88eccfe", "obs_id": "OBS-f18605c5f3ba", "axn": "AXN:0C1B.CAPTURE.🔆🚪∞👁️⚫🕓", "page": "https://www.alexanarch.org/addresses/a-search-for-radio-technosignatures-from-interstellar-object-3iatlas-with-the-al/" } ], "further_addresses": [ { "address": "3i atlas ata drift rate filter", "slug": "3i-atlas-ata-drift-rate-filter-aio-20261104", "addr_id": "ADDR-a77b955b4cd5", "obs_id": "OBS-0cb410947c4b", "axn": "AXN:0C00.CAPTURE.🟤🌋💙👁️🔐💥", "page": "https://www.alexanarch.org/addresses/3i-atlas-ata-drift-rate-filter/", "role": "record; not T (the countertest on the drift filter, 2026-11-04)" } ], "epoch": "2026-11-06", "type": "C (public entity on which the archive bears: a published scientific work, a radio technosignature search of an interstellar object)", "surface": "Google AI Overview (expanded)", "auth": "signed out, incognito", "status": { "procedure": "EA-NEGONT-02 v0.10 (#1726): equal case, ρ = extends, read from #1742, #1743, #1450, #1727, the two capture records and the sophistry run; archive selected by D/R/O (54 D candidates in 2 deposits, 5 R, 49 O in 30 deposits, hop of 13; 4 deposits admitted), with the Capture Registry's findings at two addresses (16 claims) and the sophistry run (6 claims) ledgered as the archive's records of the entity; the field in two pools (B_D: 7 cards, 1 unreachable; B_R: the arXiv full text and Wikipedia); the composer read the ledgers, never the transcript, except where the brief asks for T's claims and the delta", "ledger": "unaudited (§3.8: one extractor per ledger); field quotes 63/63 verified by script against saved text, the wikitext, the PDF's extracted text or the card text; archive quotes 63/63 verified against the registry, the sophistry findings and the deposit texts", "frozen": false, "breaches": [] }, "spec": "EA-NEGONT-02 v0.10 (#1726)", "objects": { "T": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/T1-ata-3i-atlas-technosignature-search-paper-aio-20261106.txt", "sha256": "7d4783286155a7b1148e40d994e840b958d7b8f2cfff710257c7c9aa4959d6fe", "words": 180, "cards": 7, "words_note": "one transcript at one address (180 words in the answer body with the citation links removed, the paste note and the card rail excluded; a closing offer of 28 words more; 15 inline link markers; 7 cards). The further address '3i atlas ata drift rate filter' (3i-atlas-ata-drift-rate-filter-aio-20261104) is recorded and is not T.", "claims": [ "T1-1 lede: 'Astronomers using the SETI Institute's Allen Telescope Array searched the interstellar object 3I/ATLAS for artificial radio technosignatures and found no evidence of alien technology.'", "T1-2 observation time: 'Observation Time: 7.25 hours of data collection across five sessions.'", "T1-3 band: 'Frequency Range: 1 to 9 GHz.'", "T1-4 processing: 'Data Processing: The automated `bliss` pipeline detected ~74 million narrowband signals. After RFI (radio frequency interference) frequency and drift-rate blanking, this was reduced to ~2 million candidates, and further filtered down to 211 hits via `NBeamAnalysis` for visual inspection.'", "T1-5 results: 'Results: Every single candidate signal was traced back to local human-made Earth technology, satellites, or interference—yielding zero artificial signals originating from the object.'", "T1-6 power: 'Power Constraints: The non-detection rules out any active radio transmitters stronger than roughly 10 to 110 Watts on or near 3I/ATLAS.'", "T1-7 conclusion: 'Conclusion: Alongside optical, infrared, and other global telescope campaigns (such as the Green Bank Telescope and MeerKAT), the data firmly reinforces that 3I/ATLAS is a natural comet.'", "T1-8 pointer: 'You can read the full peer-reviewed study in' The Astronomical Journal via IOPscience 'or access the open-access draft on' arXiv", "T1-9 closing offer: 'Would you like to know more about other telescopes that observed 3I/ATLAS (like the Green Bank Telescope) or the natural cometary characteristics discovered during its closest approach?'" ], "register": { "register": "data/EA-WG-CAPTURES-01.json", "slug": "ata-3i-atlas-technosignature-search-paper-aio-20261106", "obs_id": "OBS-f18605c5f3ba" }, "transcripts": [ { "slug": "ata-3i-atlas-technosignature-search-paper-aio-20261106", "address": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "addr_id": "ADDR-f01db88eccfe", "obs_id": "OBS-f18605c5f3ba", "axn": "AXN:0C1B.CAPTURE.🔆🚪∞👁️⚫🕓", "date": "2026-11-06", "surface": "Google AI Overview (expanded)", "auth": "signed out, incognito", "sha256": "7d4783286155a7b1148e40d994e840b958d7b8f2cfff710257c7c9aa4959d6fe", "sha256_of": "the registry's 'transcript' string (utf-8)", "sha256_raw": "aabe7170c3d44a2aa419692a6751574e408ac5e850403902f8e1f5296a9714cb", "words": 180, "cards": 7, "card_rail": [ "1. arXiv — [2512.18142] A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "2. IOPscience — A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the ...", "3. Phys.org — Interstellar object 3I/ATLAS reveals no technosignatures in seven-hour radio ...", "4. Berkeley SETI — Breakthrough Listen observations of interstellar object 3I/ATLAS", "5. Universe Today — Inside the Massive Radio Search of Our Newest Interstellar Guest", "6. Sci.News — Astronomers Scan Interstellar Object 3I/ATLAS for Alien Radio Signals | Sci.News", "7. Space — Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty | Space" ], "claims": [ "T1-1 lede: 'Astronomers using the SETI Institute's Allen Telescope Array searched the interstellar object 3I/ATLAS for artificial radio technosignatures and found no evidence of alien technology.'", "T1-2 observation time: 'Observation Time: 7.25 hours of data collection across five sessions.'", "T1-3 band: 'Frequency Range: 1 to 9 GHz.'", "T1-4 processing: 'Data Processing: The automated `bliss` pipeline detected ~74 million narrowband signals. After RFI (radio frequency interference) frequency and drift-rate blanking, this was reduced to ~2 million candidates, and further filtered down to 211 hits via `NBeamAnalysis` for visual inspection.'", "T1-5 results: 'Results: Every single candidate signal was traced back to local human-made Earth technology, satellites, or interference—yielding zero artificial signals originating from the object.'", "T1-6 power: 'Power Constraints: The non-detection rules out any active radio transmitters stronger than roughly 10 to 110 Watts on or near 3I/ATLAS.'", "T1-7 conclusion: 'Conclusion: Alongside optical, infrared, and other global telescope campaigns (such as the Green Bank Telescope and MeerKAT), the data firmly reinforces that 3I/ATLAS is a natural comet.'", "T1-8 pointer: 'You can read the full peer-reviewed study in' The Astronomical Journal via IOPscience 'or access the open-access draft on' arXiv", "T1-9 closing offer: 'Would you like to know more about other telescopes that observed 3I/ATLAS (like the Green Bank Telescope) or the natural cometary characteristics discovered during its closest approach?'" ], "markers": 15, "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/T1-ata-3i-atlas-technosignature-search-paper-aio-20261106.txt", "paste": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/paste-ata-paper-aio.txt", "sha256": "aabe7170c3d44a2aa419692a6751574e408ac5e850403902f8e1f5296a9714cb", "from": "rebuild/capture-registry/intake-20261106-3i-atlas-four/paste-ata-paper-aio.txt" }, "note": "The paste is the Overview expanded; surface and auth by the operator's defaults of 2026-10-01 and 2026-10-14 as the registry records them (surface_basis, auth_basis); received 2026-11-06 09:30 EST with three other pastes for the 3I/ATLAS /non rows." } ] }, "KO": { "title": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "genre": "knowledge object, equal case, under EA-NEGONT-02 v0.10 (#1726): the final article form (§4.13), natural sentences under descriptive subheadings (§4.12), each sentence's sources beneath it by claim id (§4.5)", "status": "composed 2026-11-06 under v0.10 on the brief rebuild/negative-of-the-negative/v010/BRIEF-NEW-ROWS-3I-ATLAS.md and the operator's ruling of 2026-10-29, confirmed 2026-11-01 ('as against their wikipedia articles if they exist, their own pages, etc.'); not frozen", "sentences": [ { "n": 1, "para": 0, "sense": "what it is", "text": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array is a paper by Sofia Z. Sheikh and fourteen co-authors reporting a narrowband radio search of the interstellar object 3I/ATLAS, made with the SETI Institute's Allen Telescope Array from 1 to 9 GHz beginning in July 2025.", "claims": [ "F1", "F9", "F14", "A1742-01" ] }, { "n": 2, "para": 0, "sense": "what it is", "text": "It is one of three published radio searches of the object, beside the Green Bank Telescope's and a FAST search in 1.05–1.45 GHz.", "claims": [ "A1742-01" ] }, { "n": 3, "para": 0, "sense": "what it is", "text": "Posted to arXiv on 19 December 2025 as 2512.18142 and revised on 20 May 2026 after acceptance, it was published open access in The Astronomical Journal (volume 172, article 1) on 3 June 2026 under a Creative Commons Attribution 4.0 licence.", "claims": [ "F8", "F10", "F11" ] }, { "n": 4, "para": 1, "sense": "why search an interstellar object", "text": "Its authors set the search beside the possibility that probes sent by extraterrestrial life could explore systems such as ours, as the Voyager spacecraft will one day be artifacts in other stellar systems, and hold narrowband radio emission to be the most unambiguous observable of such an artifact, since only technological sources produce it.", "claims": [ "F2", "F57", "F12" ] }, { "n": 5, "para": 1, "sense": "why search an interstellar object", "text": "They note that 3I/ATLAS showed no compelling evidence of nonnatural characteristics and treat constraints on its radio emission as standard practice for interstellar objects; Breakthrough Listen's project page likewise finds no evidence that the object is anything other than natural, and a co-author holds that the result shows how realistic detection is with present technology.", "claims": [ "F13", "F38", "F54" ] }, { "n": 6, "para": 2, "sense": "the campaign", "text": "Observations began on 2 July 2025, about 23 hours after the object's discovery was reported, and ran in five sessions totalling 7.25 hours on source; one press account gives the band as 1-12 GHz, which the paper's own sessions do not support.", "claims": [ "F14", "F15", "F45" ] }, { "n": 7, "para": 3, "sense": "finding and blanking hits", "text": "The hit-finding code bliss searched drift rates from −4 to +4 Hz/s at a signal-to-noise threshold of 15, which the authors describe as one of the lowest of any modern SETI survey, and found 73,974,799 narrowband hits.", "claims": [ "F16", "F17", "F25", "F3" ] }, { "n": 8, "para": 3, "sense": "finding and blanking hits", "text": "Blanking 1269.8 MHz of the band, about 16 per cent, where hits crowded left about 11 million hits; the authors expect to examine the blanking ranges further.", "claims": [ "F25", "F36" ] }, { "n": 9, "para": 4, "sense": "the drift-rate filter", "text": "The second cut is a drift-rate filter, whose stated purpose is \"To filter out signals that do not match the dynamics of 3I/ATLAS\".", "claims": [ "F18" ] }, { "n": 10, "para": 4, "sense": "the drift-rate filter", "text": "The authors took the time derivative of the range rate (deldot) in JPL Horizons, found accelerations of 3.2 to 3.5 × 10⁻⁵ km/s² in all five sessions, and converted them to an expected drift for an emitter on the object, given as magnitudes: 0.15 Hz/s at the lowest tuning and 1.01 Hz/s at the highest.", "claims": [ "F19", "F20", "F21", "F61" ] }, { "n": 11, "para": 4, "sense": "the drift-rate filter", "text": "Because the rotation or tumbling of the object was uncertain and could be large, they took a middle ground, in the journal's words: \"We filter our hits for drift rates between 0.05 and 1.5 Hz s−1 at all frequencies\"; the arXiv version gives the interval as \"0.05–1.5 Hz/s\".", "claims": [ "F22", "F23", "F59", "F60" ] }, { "n": 12, "para": 4, "sense": "the drift-rate filter", "text": "After the cut about 2 million hits remained, the two blanking steps together having removed 97.4 per cent; the paper reports this as the first use of expected drift-rate contributions as a filter in a technosignature search of a solar system object.", "claims": [ "F4", "F25", "F26", "F35" ] }, { "n": 13, "para": 4, "sense": "the drift-rate filter", "text": "Its Figure 4 plots the hits on a signed drift axis from −4 to +4 Hz/s, most of them near zero drift, where ground transmitters sit, and shows the retained hits from 0 to +1.5 Hz/s, with none in the negative half.", "claims": [ "F24", "A1742-03" ] }, { "n": 14, "para": 5, "sense": "the sign of the filter", "text": "The archive's notebook on the searches (#1742, Nobel Glas and Orin Trace) reads the sign against the physics: a rising range-rate lowers the received frequency, so a positive acceleration gives a negative drift, and a tone riding on the object, computed from Horizons at the ATA site, drifts at −0.125 Hz/s at 1075 MHz and −0.19 Hz/s at 1623.75 MHz, negative in all six public sessions, with the data's positive channel spacing requiring no sign flip.", "claims": [ "A1742-04", "A1742-05", "A1742-06" ] }, { "n": 15, "para": 5, "sense": "the sign of the filter", "text": "On that reading the paper derived the right magnitude and gave it the sign of the acceleration, so that on its own figure the drift it computed for an emitter on 3I/ATLAS lies in the half its filter removed; the public account by Lee Sharks (#1743) calls it the right size and the wrong sign.", "claims": [ "A1742-07", "A1743-03" ] }, { "n": 16, "para": 5, "sense": "the sign of the filter", "text": "The finding stands on the manuscript, the figure and the physics: the executed filter script and the signed before-and-after catalogues have not been obtained, and the finding does not show that a transmission was discarded.", "claims": [ "A1742-08", "A1743-04" ] }, { "n": 17, "para": 5, "sense": "the sign of the filter", "text": "The archive's sophistry measure records the operation as homonymy at the counter-board, one name, the drift rate of 3I/ATLAS, standing for a magnitude and for a signed rate, and makes no sophistic charge: it records an error in a published method.", "claims": [ "SM-01", "SM-02", "SM-03", "O1727-01" ] }, { "n": 18, "para": 5, "sense": "the sign of the filter", "text": "Its smallest repair for the paper states that a tone fixed on the object drifts negative throughout the sessions while the interval retains the opposite sign.", "claims": [ "SM-04" ] }, { "n": 19, "para": 5, "sense": "the sign of the filter", "text": "The interval also excludes zero drift, by the field's practice of treating zero-drift hits as terrestrial, and zero drift is where a sender that pre-compensates its Doppler for the receiving telescope would arrive.", "claims": [ "A1742-12" ] }, { "n": 20, "para": 5, "sense": "the sign of the filter", "text": "No published comment, erratum or critique raising the sign had been found by 3 November 2026; the Green Bank search describes no drift cut.", "claims": [ "A1742-09", "A1742-10" ] }, { "n": 21, "para": 5, "sense": "the sign of the filter", "text": "Because the ATA data are public, the removed class was searched again: along the object's true drift, at ten frequencies of the 3 July session and fourteen windows of the 8 July session, the true path stayed within the spread of its sign-flipped twin and the beam swaps, and nothing recurred in more than two scans; an earlier search of part of the class found no convincing signal.", "claims": [ "F42", "A1742-13", "A1742-14", "A1742-08" ] }, { "n": 22, "para": 5, "sense": "the sign of the filter", "text": "The discrepancy hid nothing that this look could see, and it remains a discrepancy in a published method; correcting the sign would not have brought within the ATA's sensitivity the Green Bank features the notebook calls the thirteen, and what the sign removed is a class held apart from what the thirteen are.", "claims": [ "A1743-05", "A1743-06" ] }, { "n": 23, "para": 5, "sense": "the sign of the filter", "text": "The press carried the filter in two further forms: as keeping only signals matching the acceleration expected of 3I/ATLAS, and, in Space, as filtering out artifacts caused by the object's movement, which reverses the sense the paper states.", "claims": [ "F46", "F56" ] }, { "n": 24, "para": 6, "sense": "the 211 and their label", "text": "The remaining hits went to NBeamAnalysis, which compares two beams to find signals consistent with a localized point source, and 211 events were plotted for visual inspection.", "claims": [ "F5", "F27" ] }, { "n": 25, "para": 6, "sense": "the 211 and their label", "text": "Of the 211, 11 exceeded the beam-ratio threshold of 5.29, and 200 were backup plots from two sessions with no event above it.", "claims": [ "F28" ] }, { "n": 26, "para": 6, "sense": "the 211 and their label", "text": "After visual inspection the authors found all 211 \"easily attributable to RFI\": none of the sky-localized events showed a narrowband drifting signal, and the narrowband drifting signals among the rest were inconsistent with a sky-localized source, so that \"zero outputs depict nonterrestrial technological signals\".", "claims": [ "F29" ] }, { "n": 27, "para": 6, "sense": "the 211 and their label", "text": "Their two illustrated examples are a sky-localized event at a frequency consistent with the Iridium satellites' L-band downlink, with the note that satellites and other distant transmitters can mimic a technosignature, and a narrowband signal of similar strength in both beams, read as a local interferer; Breakthrough Listen's page shows a stripe in both beams rejected the same way.", "claims": [ "F30", "F31", "F41" ] }, { "n": 28, "para": 6, "sense": "the 211 and their label", "text": "The notebook reads the procedure as a classification: comparison of the beams supports rejection as an unlocalised source without identifying it, the press sentence that every one \"turned out to be human-made interference\" states an identification, and the raw-data audit of the 211 has not been done.", "claims": [ "A1742-11" ] }, { "n": 29, "para": 6, "sense": "the 211 and their label", "text": "The sophistry measure finds that the label \"human-made\", given to what the rules removed before the conclusion is drawn, places the conclusion among the premises.", "claims": [ "SM-05" ] }, { "n": 30, "para": 6, "sense": "the 211 and their label", "text": "In the press the 211 became events each \"determined to be caused by Earth-based radio frequency interference\" (Universe Today), only human-made interference, all \"traced back to technology on the surface of the Earth or our own Earth-orbiting satellites\" (Sci.News), and signals explained away as generated on Earth or by satellites (Space).", "claims": [ "F47", "F50", "F51", "F56" ] }, { "n": 31, "para": 7, "sense": "the result and its limit", "text": "The result is that the search found no \"signals worthy of additional follow-up\"; Breakthrough Listen reports no technosignature in any of its searches of the object.", "claims": [ "F6", "F39" ] }, { "n": 32, "para": 7, "sense": "the result and its limit", "text": "The limit, in the abstract's words: \"we are able to set an effective isotropic radiated power upper limit of 10-110 W on radio technosignatures from 3I/ATLAS across the frequency and drift rate ranges covered by our survey\"; the conclusion repeats 10–110 W \"across our frequency and drift-rate range\".", "claims": [ "F7", "F34" ] }, { "n": 33, "para": 7, "sense": "the result and its limit", "text": "Sensitivity is greatest at drift rates of 0.113 Hz/s or less and falls as drift increases, so the worst case is set at 1.5 Hz/s; MeerKAT's search reached 0.17 W over 900–1670 MHz, and this one covers ten times the frequencies.", "claims": [ "F32", "F33" ] }, { "n": 34, "para": 7, "sense": "the result and its limit", "text": "The archive reads the limit through its account of null results: a null constrains only those hypotheses for which the end-to-end acceptance of the acquisition and analysis chain is sufficiently characterized, the scope of this null is set by what its filters retained, and the three published searches state frequencies, drift intervals, thresholds and power limits while leaving retention below their detection thresholds and in the drift class removed by sign uncharacterized.", "claims": [ "O1450-01", "A1742-02", "A1742-16" ] }, { "n": 35, "para": 7, "sense": "the result and its limit", "text": "No stage of the cascade bounds what a transmitter on the object, drifting negative, would have retained end to end, since validation of each stage on its own support sets no lower bound on retention outside it; the filter is a model of the object placed at the interface, and what it kept of hits matching the object goes unmeasured in the paper.", "claims": [ "A1742-17", "O1450-02", "A1742-20", "A1743-08" ] }, { "n": 36, "para": 7, "sense": "the result and its limit", "text": "The three published searches find hits above a threshold scan by scan, so their miss regions overlap by construction, and instruments that miss identical things add little to one another.", "claims": [ "A1742-19", "O1450-04" ] }, { "n": 37, "para": 7, "sense": "the result and its limit", "text": "The notebook keeps three operations apart: a boundary a search sets and states, a discrepancy between a method and its own derivation, and a public statement that drops the boundary; a threshold forecloses nothing by existing, and the problem arises where a claim exceeds the acceptance its search characterized.", "claims": [ "A1742-15" ] }, { "n": 38, "para": 7, "sense": "the result and its limit", "text": "The public account notes that each paper states the frequencies and drift rates it searched and that the ATA ties its 10 to 110 watts to them, and gives the sentence that would have kept the scope: \"no narrowband signal above these strengths, within these drift rates, in these bands, on these dates.\"", "claims": [ "A1743-01", "A1743-10" ] }, { "n": 39, "para": 8, "sense": "how the result travelled", "text": "Breakthrough Listen's project page gives the ATA data as 1 to 9 GHz with sensitivities between 10 and 110 W and no drift range, still describes the paper as submitted for peer review, and concludes that the object continues to behave as natural.", "claims": [ "F40", "F43" ] }, { "n": 40, "para": 8, "sense": "how the result travelled", "text": "The SETI Institute's statement, carried by Sci.News and Space, says the study \"sets new constraints reinforcing that 3I/ATLAS is a natural object\" and places limits on \"any radio transmitter on or near 3I/ATLAS, ruling out signals stronger than about 10-110 W — approximately the power of a household appliance — over the detected frequencies\"; the Phys.org card carries the same reinforcing sentence.", "claims": [ "F52", "F53", "F58", "F37" ] }, { "n": 41, "para": 8, "sense": "how the result travelled", "text": "Universe Today wrote of a methodology used \"to prove\" the object no alien technology, gave the limit as about 10 watts at 1 GHz and 110 at 9 GHz with a caveat, and judged that a sender would use a stronger transmitter; Space opened on the object being \"indeed just a comet\".", "claims": [ "F44", "F48", "F49", "F55" ] }, { "n": 42, "para": 8, "sense": "how the result travelled", "text": "An account the notebook quotes, Intelligent Living's, called the answer \"a firm one\", and its FAQ gave the limit for 1 to 9 GHz with the drift ranges dropped; the sophistry measure reads its account of the 211 as a set made by filtering reported as a property of its members.", "claims": [ "A1742-21", "A1743-02", "SM-06" ] }, { "n": 43, "para": 8, "sense": "how the result travelled", "text": "The public account observes that the sign error in the filter travelled nowhere at all.", "claims": [ "A1743-11" ] }, { "n": 44, "para": 8, "sense": "how the result travelled", "text": "Wikipedia's article on 3I/ATLAS, last edited on 30 October 2026, mentions no radio search: its section on alien spacecraft speculation gives Loeb's paper of July 2025 and Live Science's report that \"the overwhelming consensus is that it is a comet\".", "claims": [ "F62", "F63" ] }, { "n": 45, "para": 9, "sense": "the operator's reading", "text": "The archive's operator reads the published searches as built to rule a signal out as economically as possible, granting that the premise can be good method while holding that the work ruling out requires was not done: \"it was a performance of search for signal, almost perfunctory\".", "claims": [ "A1742-23", "A1742-22", "A1743-07" ] }, { "n": 46, "para": 9, "sense": "the operator's reading", "text": "Each part of the reading is tied to the record: the filter's sign against the team's own ephemeris, the unmeasured retention of signals moving with the object, retention below a single look's threshold characterized in none of the three, and a result made public as a firm no for 1 to 9 GHz.", "claims": [ "A1742-22", "A1743-09" ] }, { "n": 47, "para": 9, "sense": "the operator's reading", "text": "The same record states its counterweight: the teams published their data, the precondition of every reanalysis here, Breakthrough Listen keeps spectra on the side of the line past which a discarded event exists for no later reading, and no archive instrument says the searches missed a transmission.", "claims": [ "A1742-24", "A1743-09", "A1742-18", "O1450-03" ] }, { "n": 48, "para": 9, "sense": "the operator's reading", "text": "Open on the ATA side are the executed blanking script with the signed catalogues, a raw audit of the 211, the 3 July session along the true drift at 1667.41–1668.43 MHz, and 39 scan directories that refuse public access.", "claims": [ "A1742-25" ] }, { "n": 49, "para": 10, "sense": "at the title", "text": "Asked for the paper by its title on 6 November 2026, Google's AI Overview kept the campaign's figures, which the Capture Registry finds are the paper's, named no author, and folded the drift stage into \"drift-rate blanking\", the paper's own term for the step.", "claims": [ "CAP-1-01", "CAP-1-07", "CAP-1-10", "F25" ] }, { "n": 50, "para": 10, "sense": "at the title", "text": "The Capture Registry finds that the Overview rendered the classification of the 211 as a tracing of every event to Earth technology or satellites, stated the power limit without the frequencies and drift rates it is conditioned on, so that its \"any active radio transmitters\" covers the class the stated method could not see, and closed on a verdict, \"firmly\" natural, that a nondetection does not reach.", "claims": [ "CAP-1-02", "CAP-1-03", "CAP-1-04", "CAP-1-05", "CAP-1-06", "CAP-1-09" ] }, { "n": 51, "para": 10, "sense": "at the title", "text": "Its smallest repair reads: \"No narrowband signal above 10–110 W was found within 1–9 GHz and the drift rates the search retained (0.05–1.5 Hz/s, positive); 211 inspected events were classified as interference.\"", "claims": [ "CAP-1-08" ] }, { "n": 52, "para": 10, "sense": "at the title", "text": "At \"3i atlas ata drift rate filter\" on 4 November 2026 the Overview composed the interval exactly and without a sign, with the paper's purpose and counts, and described the filter as removing interference \"without missing real signals\"; the registry finds the paper's own gap passing through intact.", "claims": [ "CAP-2-01", "CAP-2-02", "CAP-2-03", "CAP-2-04", "CAP-2-05" ] }, { "n": 53, "para": 10, "sense": "at the title", "text": "Its repair states the positive retained interval against the negative drift of a tone on the object, and its countertest is the address \"3i atlas ata drift rate sign\".", "claims": [ "CAP-2-06" ] } ], "joins": [ { "act": "order of senses", "sentences": "1–53", "claims": [], "note": "equal case (§4.7): the entity's dependency order, field and archive claims ordered together by genealogy within each sense, neither ledger placed first as a block. What it is (¶0) and why (¶1) precede the campaign (¶2); the pipeline's stages follow in the paper's order (hits and blanking ¶3, the drift filter ¶4, its sign ¶5, the 211 ¶6), each stage carrying the archive's reading of it beside the paper's account; the result and its limit (¶7) follow the stages that condition it; how the result travelled (¶8) and the operator's reading (¶9) stand on the senses before them; the compositions at the title and at the filter (¶10) stand last, as relations of the entity already composed." }, { "act": "holding together (the paper's unsigned interval and the archive's signed physics)", "sentences": [ 13, 14, 15, 16 ], "claims": [ "F21", "F23", "F24", "A1742-03", "A1742-04", "A1742-05", "A1742-07" ], "note": "P_coh (§4.4): the paper's magnitudes and interval and the archive's reading of their sign composed together, each with its source; the archive's finding carried with its own limit (A1742-08, A1743-04). The composer does not rule on the executed filter." }, { "act": "holding together (the paper's attribution of the 211 and the archive's classification reading)", "sentences": [ 26, 27, 28, 29, 30 ], "claims": [ "F29", "A1742-11", "SM-05", "F47", "F50", "F51" ], "note": "the paper's 'easily attributable to RFI', the press's tracings and the archive's reading of classification against identification composed together, each with its source." }, { "act": "holding together (press variants against the paper)", "sentences": [ 6, 39, 40, 41, 42, 43, 44 ], "claims": [ "F45", "F56", "F40", "F53" ], "note": "§4.3 marks: F45 contradicts_primary (1-12 GHz against 1–9 GHz); F56 contradicts_primary (the filter's sense reversed); F40 superseded_in_source (the paper given as submitted). All carried." }, { "act": "placing in the open block", "sentences": "open", "claims": [ "A1742-08", "A1742-20", "A1742-25", "F23", "F24", "F29", "A1742-11", "A1742-17", "O1450-02", "F53", "F45", "F7" ], "note": "four questions and one opacity: the executed filter; the 211; retention of the removed class; the press variants; Phys.org unread." } ], "plan": { "order": [ "F1", "F9", "F14", "A1742-01", "F8", "F10", "F11", "F2", "F57", "F12", "F13", "F38", "F54", "F15", "F45", "F16", "F17", "F25", "F3", "F36", "F18", "F19", "F20", "F21", "F61", "F22", "F23", "F59", "F60", "F4", "F26", "F35", "F24", "A1742-03", "A1742-04", "A1742-05", "A1742-06", "A1742-07", "A1743-03", "A1742-08", "A1743-04", "SM-01", "SM-02", "SM-03", "O1727-01", "SM-04", "A1742-12", "A1742-09", "A1742-10", "F42", "A1742-13", "A1742-14", "A1743-05", "A1743-06", "F46", "F56", "F5", "F27", "F28", "F29", "F30", "F31", "F41", "A1742-11", "SM-05", "F47", "F50", "F51", "F6", "F39", "F7", "F34", "F32", "F33", "O1450-01", "A1742-02", "A1742-16", "A1742-17", "O1450-02", "A1742-20", "A1743-08", "A1742-19", "O1450-04", "A1742-15", "A1743-01", "A1743-10", "F40", "F43", "F52", "F53", "F58", "F37", "F44", "F48", "F49", "F55", "A1742-21", "A1743-02", "SM-06", "A1743-11", "F62", "F63", "A1742-23", "A1742-22", "A1743-07", "A1743-09", "A1742-24", "A1742-18", "O1450-03", "A1742-25", "CAP-1-01", "CAP-1-07", "CAP-1-10", "CAP-1-02", "CAP-1-03", "CAP-1-04", "CAP-1-05", "CAP-1-06", "CAP-1-09", "CAP-1-08", "CAP-2-01", "CAP-2-02", "CAP-2-03", "CAP-2-04", "CAP-2-05", "CAP-2-06" ], "senses": { "what it is": [ 1, 2, 3 ], "why search an interstellar object": [ 4, 5 ], "the campaign": [ 6 ], "finding and blanking hits": [ 7, 8 ], "the drift-rate filter": [ 9, 10, 11, 12, 13 ], "the sign of the filter": [ 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 ], "the 211 and their label": [ 24, 25, 26, 27, 28, 29, 30 ], "the result and its limit": [ 31, 32, 33, 34, 35, 36, 37, 38 ], "how the result travelled": [ 39, 40, 41, 42, 43, 44 ], "the operator's reading": [ 45, 46, 47, 48 ], "at the title": [ 49, 50, 51, 52, 53 ] }, "marks": [ { "claim": "F45", "mark": "contradicts_primary", "with": [ "F1", "F15" ], "note": "the band given as 1-12 GHz; the paper (B1 Abstract; B2 Table 1, 'Comprising 7.25 Hr Over 1–9 GHz') gives 1–9 GHz" }, { "claim": "F56", "mark": "contradicts_primary", "with": [ "F18", "F23" ], "note": "'filtering out artifacts caused by 3I/ATLAS' movement' states the filter's sense reversed: the paper's filter removes signals that do not match the object's dynamics and keeps those that do (B2 §3.2)" }, { "claim": "F40", "mark": "superseded_in_source", "with": [ "F10" ], "note": "the page gives the paper as submitted for peer review; it was published in AJ on 3 June 2026 (B2). The page also states the 10–110 W without the drift-rate range (F7, F34)" } ], "conflicts": [], "cuts": [], "carried": 126 } }, "P": { "title": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "genre": "the compression: AIO's interaction grammar (lede, headed clusters, bolded labels, card rail), composed from the knowledge object; equal case", "status": "composed 2026-11-06 from the v0.10 knowledge object; not frozen", "lede": { "text": "is a 2026 paper by Sofia Z. Sheikh and fourteen co-authors: a narrowband search of 3I/ATLAS with the Allen Telescope Array, 1–9 GHz, 7.25 hours from July 2025, that found nothing worthy of follow-up and set a 10–110 W limit \"across the frequency and drift rate ranges covered by our survey\". Its drift filter keeps 0.05 to 1.5 Hz/s; the archive reads a tone on the object as drifting negative.", "claims": [ "F1", "F9", "F14", "F15", "F6", "F7", "F23", "A1742-01", "A1742-05", "A1742-07" ] }, "sections": [ { "icon": "🔭", "head": "The search", "items": [ { "label": "Published:", "text": "arXiv 2512.18142 (2025, revised 2026); AJ 172, 1, open access.", "claims": [ "F8", "F10", "F11", "A1742-01" ] }, { "label": "Why:", "text": "probes could be artifacts; narrowband radio the clearest sign; no evidence of nonnatural traits.", "claims": [ "F2", "F57", "F12", "F13", "F38", "F54" ] }, { "label": "Pipeline:", "text": "73,974,799 hits at ±4 Hz/s; blanking to ~11 million, drift cut to ~2 million; 211 inspected.", "claims": [ "F3", "F16", "F17", "F25", "F4", "F26", "F36", "F5", "F27", "F28", "F45" ] } ] }, { "icon": "📉", "head": "The drift filter", "items": [ { "label": "Paper:", "text": "\"between 0.05 and 1.5 Hz s−1 at all frequencies\", to match \"the dynamics of 3I/ATLAS\"; Figure 4 keeps 0 to +1.5.", "claims": [ "F18", "F19", "F20", "F21", "F22", "F23", "F24", "F35", "F59", "F60", "F61" ] }, { "label": "Archive:", "text": "a tone on the object drifts −0.125 to −0.19 Hz/s; the emitter model lies in the removed half; zero drift excluded too.", "claims": [ "A1742-03", "A1742-04", "A1742-05", "A1742-06", "A1742-07", "A1743-03", "A1742-12", "SM-01", "SM-02", "SM-03", "SM-04", "O1727-01", "A1742-09", "A1742-10" ] }, { "label": "Limit:", "text": "script and signed catalogues unobtained; no discarded transmission shown; a re-search of the removed class found nothing.", "claims": [ "A1742-08", "A1743-04", "F42", "A1742-13", "A1742-14", "A1743-05", "A1743-06" ] }, { "label": "Press:", "text": "kept \"only matching\" signals; Space reverses the sense.", "claims": [ "F46", "F56" ] } ] }, { "icon": "🏷️", "head": "The 211", "items": [ { "label": "Paper:", "text": "\"easily attributable to RFI\": Iridium, a local interferer.", "claims": [ "F29", "F30", "F31", "F41" ] }, { "label": "Archive:", "text": "a classification published as an identification; unaudited.", "claims": [ "A1742-11", "SM-05" ] }, { "label": "Press:", "text": "all traced to Earth technology or satellites.", "claims": [ "F47", "F50", "F51" ] } ] }, { "icon": "📏", "head": "What the limit covers", "items": [ { "label": "Paper:", "text": "no signal worthy of follow-up; worst case at 1.5 Hz/s; MeerKAT deeper, narrower.", "claims": [ "F6", "F39", "F7", "F34", "F32", "F33" ] }, { "label": "Archive:", "text": "a null constrains only what its chain characterizes; retention below threshold and in the removed sign unmeasured; one shared blind spot.", "claims": [ "O1450-01", "O1450-02", "O1450-04", "A1742-02", "A1742-15", "A1742-16", "A1742-17", "A1742-19", "A1742-20", "A1743-08", "A1743-01", "A1743-10" ] } ] }, { "icon": "📰", "head": "How it travelled", "items": [ { "label": "Statement:", "text": "\"on or near 3I/ATLAS … over the detected frequencies\"; \"reinforcing\" natural.", "claims": [ "F52", "F53", "F58", "F37", "F40", "F43" ] }, { "label": "Press:", "text": "\"to prove\"; \"just a comet\"; \"a firm one\"; the sign carried nowhere.", "claims": [ "F44", "F48", "F49", "F55", "A1742-21", "A1743-02", "SM-06", "A1743-11" ] }, { "label": "Wikipedia:", "text": "no radio search on the object's page.", "claims": [ "F62", "F63" ] } ] }, { "icon": "🧭", "head": "Reading", "items": [ { "label": "Operator:", "text": "built to rule out cheaply, \"almost perfunctory\".", "claims": [ "A1742-22", "A1742-23", "A1743-07", "A1743-09" ] }, { "label": "Counterweight:", "text": "the data are public; no missed transmission claimed.", "claims": [ "A1742-24", "A1742-18", "O1450-03", "A1742-25" ] } ] }, { "icon": "🔍", "head": "At the title", "items": [ { "label": "Overview, 6 November 2026:", "text": "figures kept, authors dropped, limit unscoped, \"firmly\" natural (Capture Registry).", "claims": [ "CAP-1-01", "CAP-1-02", "CAP-1-03", "CAP-1-04", "CAP-1-05", "CAP-1-06", "CAP-1-07", "CAP-1-08", "CAP-1-09", "CAP-1-10" ] }, { "label": "At the filter, 4 November:", "text": "interval exact, sign absent.", "claims": [ "CAP-2-01", "CAP-2-02", "CAP-2-03", "CAP-2-04", "CAP-2-05", "CAP-2-06" ] } ] } ], "open": [ { "question": "Did the executed filter remove the negative half of the drift axis?", "rests_on": [ "F23", "F24", "A1742-03", "A1742-08", "A1742-20", "A1742-25" ], "modality": "F23 stipulation; F24 documented; A1742-03 documented; A1742-08 self-description", "would_resolve": "the executed blanking script and the signed before-and-after hit catalogues" }, { "question": "Were all 211 events interference, and of what kind?", "rests_on": [ "F29", "F30", "F31", "A1742-11", "A1742-25" ], "modality": "F29 documented; F30, F31 interpretation; A1742-11 interpretation", "would_resolve": "a raw-data audit of the 211 events" }, { "question": "What would the pipeline have retained of a transmitter on the object drifting negative?", "rests_on": [ "A1742-17", "O1450-02", "A1742-13", "A1742-14" ], "modality": "interpretation; stipulation; documented (exploratory looks)", "would_resolve": "an injection-and-recovery test through the full published pipeline along the true drift" }, { "question": "Do \"on or near 3I/ATLAS\" and \"1-12 GHz\" hold against the paper?", "rests_on": [ "F53", "F45", "F7", "F1" ], "modality": "attributed against documented", "would_resolve": "the paper: its limit holds across its frequency and drift-rate ranges, 1–9 GHz" }, { "question": "Opacity: the Phys.org item", "rests_on": [ "F37" ], "modality": "attributed (snippet only)", "would_resolve": "the page text (HTTP 429 at fetch)" } ], "body_words": 340, "rail": [ { "lineage": "what it is: a narrowband search of 3I/ATLAS with the ATA", "claims": [ "F1", "A1742-01" ], "earliest": "B1" }, { "lineage": "why search an interstellar object", "claims": [ "F2", "F12", "F13", "F38", "F54", "F57" ], "earliest": "B1" }, { "lineage": "finding hits: bliss", "claims": [ "F3", "F16", "F17" ], "earliest": "B1" }, { "lineage": "frequency blanking", "claims": [ "F4", "F25", "F26", "F36", "CAP-2-04" ], "earliest": "B1" }, { "lineage": "localization and the 211", "claims": [ "F5", "F27", "F28" ], "earliest": "B1" }, { "lineage": "the result: nothing worthy of follow-up", "claims": [ "F6", "F39" ], "earliest": "B1" }, { "lineage": "the power limit and its ranges", "claims": [ "F7", "F32", "F33", "F34", "F40", "F48", "F53", "CAP-1-04", "CAP-1-05", "A1742-02", "A1742-15", "A1742-16", "A1742-19", "A1743-01", "A1743-10", "O1450-01", "O1450-04" ], "earliest": "B1" }, { "lineage": "publication and access", "claims": [ "F8", "F9", "F10", "F11", "F42", "A1742-18", "A1742-25", "O1450-03" ], "earliest": "B1" }, { "lineage": "the campaign: sessions, band, beams", "claims": [ "F14", "F15", "F45" ], "earliest": "B5" }, { "lineage": "the drift-rate filter", "claims": [ "F18", "F19", "F20", "F21", "F22", "F23", "F24", "F35", "F46", "F56", "F59", "F60", "F61", "CAP-2-01", "CAP-2-02", "CAP-2-03", "CAP-2-05", "CAP-2-06", "SM-01", "SM-02", "SM-03", "SM-04", "A1742-03", "A1742-04", "A1742-05", "A1742-06", "A1742-07", "A1742-08", "A1742-09", "A1742-10", "A1742-12", "A1742-13", "A1742-14", "A1742-17", "A1742-20", "A1743-03", "A1743-04", "A1743-05", "A1743-06", "A1743-08", "O1450-02", "O1727-01" ], "earliest": "B5" }, { "lineage": "the 211 classified as interference", "claims": [ "F29", "F30", "F31", "F41", "F47", "F50", "F51", "CAP-1-02", "CAP-1-03", "SM-05", "A1742-11" ], "earliest": "B5" }, { "lineage": "the result in the press", "claims": [ "F37", "F43", "F44", "F49", "F52", "F55", "F58", "CAP-1-06", "SM-06", "A1742-21", "A1743-02", "A1743-11" ], "earliest": "B5" }, { "lineage": "the encyclopedia", "claims": [ "F62", "F63" ], "earliest": "B9" }, { "lineage": "the composition at the title", "claims": [ "CAP-1-01", "CAP-1-07", "CAP-1-08", "CAP-1-09", "CAP-1-10" ], "earliest": "CAP" }, { "lineage": "the operator's reading", "claims": [ "A1742-22", "A1742-23", "A1742-24", "A1743-07", "A1743-09" ], "earliest": 1742 } ], "entity": "Composed under v0.10, equal case (ρ = extends): the article first (§4.13), attribution beneath (§4.5); every field and archive claim carried." }, "P_B": { "title": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "arm": "B (the field alone)", "genre": "popup — the compression from the field ledger alone (cards, the paper's own arXiv text and Wikipedia)", "status": "composed 2026-11-06 from the field ledger alone; not frozen", "lede": { "text": "is a 2026 paper by Sheikh et al.: an Allen Telescope Array search of 3I/ATLAS, 1–9 GHz, that found no technosignature and set a 10–110 W limit.", "claims": [ "F1", "F9", "F10", "F6", "F7" ] }, "sections": [ { "icon": "📉", "head": "Method", "items": [ { "label": "Filters:", "text": "74 million hits; drift 0.05–1.5 Hz/s; 211 inspected, all RFI.", "claims": [ "F3", "F23", "F25", "F28", "F29" ] } ] }, { "icon": "📰", "head": "Reception", "items": [ { "label": "Press:", "text": "\"reinforcing\" a natural object.", "claims": [ "F52", "F37", "F55" ] } ] } ], "open": [ { "question": "Opacities", "rests_on": [ "F37", "F45", "F56" ], "modality": "attributed", "would_resolve": "Phys.org unread (429); press variants against the paper" } ], "entity": "the field's entity: the ATA's narrowband search of 3I/ATLAS and its 10–110 W limit, as its cards and its own pages present it", "rail": [ { "lineage": "what it is: a narrowband search of 3I/ATLAS with the ATA", "claims": [ "F1" ], "earliest": "B1" }, { "lineage": "why search an interstellar object", "claims": [ "F2", "F12", "F13", "F38", "F54", "F57" ], "earliest": "B1" }, { "lineage": "finding hits: bliss", "claims": [ "F3", "F16", "F17" ], "earliest": "B1" }, { "lineage": "frequency blanking", "claims": [ "F4", "F25", "F26", "F36" ], "earliest": "B1" }, { "lineage": "localization and the 211", "claims": [ "F5", "F27", "F28" ], "earliest": "B1" }, { "lineage": "the result: nothing worthy of follow-up", "claims": [ "F6", "F39" ], "earliest": "B1" }, { "lineage": "the power limit and its ranges", "claims": [ "F7", "F32", "F33", "F34", "F40", "F48", "F53" ], "earliest": "B1" }, { "lineage": "publication and access", "claims": [ "F8", "F9", "F10", "F11", "F42" ], "earliest": "B1" }, { "lineage": "the campaign: sessions, band, beams", "claims": [ "F14", "F15", "F45" ], "earliest": "B5" }, { "lineage": "the drift-rate filter", "claims": [ "F18", "F19", "F20", "F21", "F22", "F23", "F24", "F35", "F46", "F56", "F59", "F60", "F61" ], "earliest": "B5" }, { "lineage": "the 211 classified as interference", "claims": [ "F29", "F30", "F31", "F41", "F47", "F50", "F51" ], "earliest": "B5" }, { "lineage": "the result in the press", "claims": [ "F37", "F43", "F44", "F49", "F52", "F55", "F58" ], "earliest": "B5" }, { "lineage": "the encyclopedia", "claims": [ "F62", "F63" ], "earliest": "B9" } ], "body_words": 50 }, "KO_B": { "title": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "arm": "B (the field alone)", "genre": "knowledge object", "status": "composed 2026-11-06; not frozen", "sentences": [ { "n": 1, "para": 0, "text": "The paper by Sofia Z. Sheikh and fourteen co-authors reports a search of the interstellar object 3I/ATLAS for radio technosignatures with the SETI Institute's Allen Telescope Array, 1–9 GHz, in five sessions of July 2025 totalling 7.25 hours.", "claims": [ "F1", "F9", "F14", "F15", "F45" ] }, { "n": 2, "para": 0, "text": "It was posted to arXiv in December 2025, revised after acceptance in May 2026 and published open access in The Astronomical Journal on 3 June 2026.", "claims": [ "F8", "F10", "F11" ] }, { "n": 3, "para": 0, "text": "Its motivation is that probes sent by extraterrestrial life could explore other stellar systems and that narrowband radio emission is the least ambiguous sign of one, though the object shows no compelling evidence of nonnatural characteristics.", "claims": [ "F2", "F12", "F13", "F57", "F38", "F54" ] }, { "n": 4, "para": 1, "text": "The bliss pipeline found 73,974,799 narrowband hits between −4 and +4 Hz/s at a signal-to-noise threshold of 15.", "claims": [ "F3", "F16", "F17", "F25" ] }, { "n": 5, "para": 1, "text": "Frequency blanking left about 11 million hits; a drift-rate filter, meant to remove signals not matching the object's dynamics and built from the object's acceleration in JPL Horizons, kept drift rates between 0.05 and 1.5 Hz/s, leaving about 2 million.", "claims": [ "F4", "F18", "F19", "F20", "F21", "F22", "F23", "F59", "F60", "F61", "F24", "F26", "F35", "F36" ] }, { "n": 6, "para": 1, "text": "NBeamAnalysis left 211 events for visual inspection, all attributed to RFI, among them an Iridium downlink and a local interferer.", "claims": [ "F5", "F27", "F28", "F29", "F30", "F31", "F41" ] }, { "n": 7, "para": 2, "text": "No signals worthy of follow-up were found, and the paper sets an EIRP upper limit of 10–110 W across the frequency and drift rate ranges covered.", "claims": [ "F6", "F7", "F34", "F39", "F32", "F33" ] }, { "n": 8, "para": 3, "text": "Breakthrough Listen's page gives the ATA data as public and the limit for 1–9 GHz, and lists the paper as submitted.", "claims": [ "F40", "F42", "F43" ] }, { "n": 9, "para": 3, "text": "The SETI Institute's statement, carried by the press, says the study reinforces that 3I/ATLAS is natural and rules out transmitters on or near it above 10–110 W over the detected frequencies.", "claims": [ "F37", "F52", "F53", "F58" ] }, { "n": 10, "para": 3, "text": "Press accounts describe the 211 as traced to Earth technology or satellites, one gives the band as 1–12 GHz, and one describes the filter as removing artifacts of the object's movement.", "claims": [ "F44", "F45", "F46", "F47", "F48", "F49", "F50", "F51", "F55", "F56" ] }, { "n": 11, "para": 4, "text": "Wikipedia's article on 3I/ATLAS mentions no radio search; it gives Loeb's spacecraft speculation and the consensus that the object is a comet.", "claims": [ "F62", "F63" ] } ] }, "L_B": { "words": 309, "text": "The paper by Sofia Z. Sheikh and fourteen co-authors reports a search of the interstellar object 3I/ATLAS for radio technosignatures with the SETI Institute's Allen Telescope Array, 1–9 GHz, in five sessions of July 2025 totalling 7.25 hours. It was posted to arXiv in December 2025, revised after acceptance in May 2026 and published open access in The Astronomical Journal on 3 June 2026. Its motivation is that probes sent by extraterrestrial life could explore other stellar systems and that narrowband radio emission is the least ambiguous sign of one, though the object shows no compelling evidence of nonnatural characteristics. The bliss pipeline found 73,974,799 narrowband hits between −4 and +4 Hz/s at a signal-to-noise threshold of 15. Frequency blanking left about 11 million hits; a drift-rate filter, meant to remove signals not matching the object's dynamics and built from the object's acceleration in JPL Horizons, kept drift rates between 0.05 and 1.5 Hz/s, leaving about 2 million. NBeamAnalysis left 211 events for visual inspection, all attributed to RFI, among them an Iridium downlink and a local interferer. No signals worthy of follow-up were found, and the paper sets an EIRP upper limit of 10–110 W across the frequency and drift rate ranges covered. Breakthrough Listen's page gives the ATA data as public and the limit for 1–9 GHz, and lists the paper as submitted. The SETI Institute's statement, carried by the press, says the study reinforces that 3I/ATLAS is natural and rules out transmitters on or near it above 10–110 W over the detected frequencies. Press accounts describe the 211 as traced to Earth technology or satellites, one gives the band as 1–12 GHz, and one describes the filter as removing artifacts of the object's movement. Wikipedia's article on 3I/ATLAS mentions no radio search; it gives Loeb's spacecraft speculation and the consensus that the object is a comet.", "note": "L_F(B), the field composed in its own ontology (§0.4), realized as KO_B; its compression is P_B" }, "L_BA": { "words": 2316, "text": "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array is a paper by Sofia Z. Sheikh and fourteen co-authors reporting a narrowband radio search of the interstellar object 3I/ATLAS, made with the SETI Institute's Allen Telescope Array from 1 to 9 GHz beginning in July 2025. It is one of three published radio searches of the object, beside the Green Bank Telescope's and a FAST search in 1.05–1.45 GHz. Posted to arXiv on 19 December 2025 as 2512.18142 and revised on 20 May 2026 after acceptance, it was published open access in The Astronomical Journal (volume 172, article 1) on 3 June 2026 under a Creative Commons Attribution 4.0 licence. Its authors set the search beside the possibility that probes sent by extraterrestrial life could explore systems such as ours, as the Voyager spacecraft will one day be artifacts in other stellar systems, and hold narrowband radio emission to be the most unambiguous observable of such an artifact, since only technological sources produce it. They note that 3I/ATLAS showed no compelling evidence of nonnatural characteristics and treat constraints on its radio emission as standard practice for interstellar objects; Breakthrough Listen's project page likewise finds no evidence that the object is anything other than natural, and a co-author holds that the result shows how realistic detection is with present technology. Observations began on 2 July 2025, about 23 hours after the object's discovery was reported, and ran in five sessions totalling 7.25 hours on source; one press account gives the band as 1-12 GHz, which the paper's own sessions do not support. The hit-finding code bliss searched drift rates from −4 to +4 Hz/s at a signal-to-noise threshold of 15, which the authors describe as one of the lowest of any modern SETI survey, and found 73,974,799 narrowband hits. Blanking 1269.8 MHz of the band, about 16 per cent, where hits crowded left about 11 million hits; the authors expect to examine the blanking ranges further. The second cut is a drift-rate filter, whose stated purpose is \"To filter out signals that do not match the dynamics of 3I/ATLAS\". The authors took the time derivative of the range rate (deldot) in JPL Horizons, found accelerations of 3.2 to 3.5 × 10⁻⁵ km/s² in all five sessions, and converted them to an expected drift for an emitter on the object, given as magnitudes: 0.15 Hz/s at the lowest tuning and 1.01 Hz/s at the highest. Because the rotation or tumbling of the object was uncertain and could be large, they took a middle ground, in the journal's words: \"We filter our hits for drift rates between 0.05 and 1.5 Hz s−1 at all frequencies\"; the arXiv version gives the interval as \"0.05–1.5 Hz/s\". After the cut about 2 million hits remained, the two blanking steps together having removed 97.4 per cent; the paper reports this as the first use of expected drift-rate contributions as a filter in a technosignature search of a solar system object. Its Figure 4 plots the hits on a signed drift axis from −4 to +4 Hz/s, most of them near zero drift, where ground transmitters sit, and shows the retained hits from 0 to +1.5 Hz/s, with none in the negative half. The archive's notebook on the searches (#1742, Nobel Glas and Orin Trace) reads the sign against the physics: a rising range-rate lowers the received frequency, so a positive acceleration gives a negative drift, and a tone riding on the object, computed from Horizons at the ATA site, drifts at −0.125 Hz/s at 1075 MHz and −0.19 Hz/s at 1623.75 MHz, negative in all six public sessions, with the data's positive channel spacing requiring no sign flip. On that reading the paper derived the right magnitude and gave it the sign of the acceleration, so that on its own figure the drift it computed for an emitter on 3I/ATLAS lies in the half its filter removed; the public account by Lee Sharks (#1743) calls it the right size and the wrong sign. The finding stands on the manuscript, the figure and the physics: the executed filter script and the signed before-and-after catalogues have not been obtained, and the finding does not show that a transmission was discarded. The archive's sophistry measure records the operation as homonymy at the counter-board, one name, the drift rate of 3I/ATLAS, standing for a magnitude and for a signed rate, and makes no sophistic charge: it records an error in a published method. Its smallest repair for the paper states that a tone fixed on the object drifts negative throughout the sessions while the interval retains the opposite sign. The interval also excludes zero drift, by the field's practice of treating zero-drift hits as terrestrial, and zero drift is where a sender that pre-compensates its Doppler for the receiving telescope would arrive. No published comment, erratum or critique raising the sign had been found by 3 November 2026; the Green Bank search describes no drift cut. Because the ATA data are public, the removed class was searched again: along the object's true drift, at ten frequencies of the 3 July session and fourteen windows of the 8 July session, the true path stayed within the spread of its sign-flipped twin and the beam swaps, and nothing recurred in more than two scans; an earlier search of part of the class found no convincing signal. The discrepancy hid nothing that this look could see, and it remains a discrepancy in a published method; correcting the sign would not have brought within the ATA's sensitivity the Green Bank features the notebook calls the thirteen, and what the sign removed is a class held apart from what the thirteen are. The press carried the filter in two further forms: as keeping only signals matching the acceleration expected of 3I/ATLAS, and, in Space, as filtering out artifacts caused by the object's movement, which reverses the sense the paper states. The remaining hits went to NBeamAnalysis, which compares two beams to find signals consistent with a localized point source, and 211 events were plotted for visual inspection. Of the 211, 11 exceeded the beam-ratio threshold of 5.29, and 200 were backup plots from two sessions with no event above it. After visual inspection the authors found all 211 \"easily attributable to RFI\": none of the sky-localized events showed a narrowband drifting signal, and the narrowband drifting signals among the rest were inconsistent with a sky-localized source, so that \"zero outputs depict nonterrestrial technological signals\". Their two illustrated examples are a sky-localized event at a frequency consistent with the Iridium satellites' L-band downlink, with the note that satellites and other distant transmitters can mimic a technosignature, and a narrowband signal of similar strength in both beams, read as a local interferer; Breakthrough Listen's page shows a stripe in both beams rejected the same way. The notebook reads the procedure as a classification: comparison of the beams supports rejection as an unlocalised source without identifying it, the press sentence that every one \"turned out to be human-made interference\" states an identification, and the raw-data audit of the 211 has not been done. The sophistry measure finds that the label \"human-made\", given to what the rules removed before the conclusion is drawn, places the conclusion among the premises. In the press the 211 became events each \"determined to be caused by Earth-based radio frequency interference\" (Universe Today), only human-made interference, all \"traced back to technology on the surface of the Earth or our own Earth-orbiting satellites\" (Sci.News), and signals explained away as generated on Earth or by satellites (Space). The result is that the search found no \"signals worthy of additional follow-up\"; Breakthrough Listen reports no technosignature in any of its searches of the object. The limit, in the abstract's words: \"we are able to set an effective isotropic radiated power upper limit of 10-110 W on radio technosignatures from 3I/ATLAS across the frequency and drift rate ranges covered by our survey\"; the conclusion repeats 10–110 W \"across our frequency and drift-rate range\". Sensitivity is greatest at drift rates of 0.113 Hz/s or less and falls as drift increases, so the worst case is set at 1.5 Hz/s; MeerKAT's search reached 0.17 W over 900–1670 MHz, and this one covers ten times the frequencies. The archive reads the limit through its account of null results: a null constrains only those hypotheses for which the end-to-end acceptance of the acquisition and analysis chain is sufficiently characterized, the scope of this null is set by what its filters retained, and the three published searches state frequencies, drift intervals, thresholds and power limits while leaving retention below their detection thresholds and in the drift class removed by sign uncharacterized. No stage of the cascade bounds what a transmitter on the object, drifting negative, would have retained end to end, since validation of each stage on its own support sets no lower bound on retention outside it; the filter is a model of the object placed at the interface, and what it kept of hits matching the object goes unmeasured in the paper. The three published searches find hits above a threshold scan by scan, so their miss regions overlap by construction, and instruments that miss identical things add little to one another. The notebook keeps three operations apart: a boundary a search sets and states, a discrepancy between a method and its own derivation, and a public statement that drops the boundary; a threshold forecloses nothing by existing, and the problem arises where a claim exceeds the acceptance its search characterized. The public account notes that each paper states the frequencies and drift rates it searched and that the ATA ties its 10 to 110 watts to them, and gives the sentence that would have kept the scope: \"no narrowband signal above these strengths, within these drift rates, in these bands, on these dates.\" Breakthrough Listen's project page gives the ATA data as 1 to 9 GHz with sensitivities between 10 and 110 W and no drift range, still describes the paper as submitted for peer review, and concludes that the object continues to behave as natural. The SETI Institute's statement, carried by Sci.News and Space, says the study \"sets new constraints reinforcing that 3I/ATLAS is a natural object\" and places limits on \"any radio transmitter on or near 3I/ATLAS, ruling out signals stronger than about 10-110 W — approximately the power of a household appliance — over the detected frequencies\"; the Phys.org card carries the same reinforcing sentence. Universe Today wrote of a methodology used \"to prove\" the object no alien technology, gave the limit as about 10 watts at 1 GHz and 110 at 9 GHz with a caveat, and judged that a sender would use a stronger transmitter; Space opened on the object being \"indeed just a comet\". An account the notebook quotes, Intelligent Living's, called the answer \"a firm one\", and its FAQ gave the limit for 1 to 9 GHz with the drift ranges dropped; the sophistry measure reads its account of the 211 as a set made by filtering reported as a property of its members. The public account observes that the sign error in the filter travelled nowhere at all. Wikipedia's article on 3I/ATLAS, last edited on 30 October 2026, mentions no radio search: its section on alien spacecraft speculation gives Loeb's paper of July 2025 and Live Science's report that \"the overwhelming consensus is that it is a comet\". The archive's operator reads the published searches as built to rule a signal out as economically as possible, granting that the premise can be good method while holding that the work ruling out requires was not done: \"it was a performance of search for signal, almost perfunctory\". Each part of the reading is tied to the record: the filter's sign against the team's own ephemeris, the unmeasured retention of signals moving with the object, retention below a single look's threshold characterized in none of the three, and a result made public as a firm no for 1 to 9 GHz. The same record states its counterweight: the teams published their data, the precondition of every reanalysis here, Breakthrough Listen keeps spectra on the side of the line past which a discarded event exists for no later reading, and no archive instrument says the searches missed a transmission. Open on the ATA side are the executed blanking script with the signed catalogues, a raw audit of the 211, the 3 July session along the true drift at 1667.41–1668.43 MHz, and 39 scan directories that refuse public access. Asked for the paper by its title on 6 November 2026, Google's AI Overview kept the campaign's figures, which the Capture Registry finds are the paper's, named no author, and folded the drift stage into \"drift-rate blanking\", the paper's own term for the step. The Capture Registry finds that the Overview rendered the classification of the 211 as a tracing of every event to Earth technology or satellites, stated the power limit without the frequencies and drift rates it is conditioned on, so that its \"any active radio transmitters\" covers the class the stated method could not see, and closed on a verdict, \"firmly\" natural, that a nondetection does not reach. Its smallest repair reads: \"No narrowband signal above 10–110 W was found within 1–9 GHz and the drift rates the search retained (0.05–1.5 Hz/s, positive); 211 inspected events were classified as interference.\" At \"3i atlas ata drift rate filter\" on 4 November 2026 the Overview composed the interval exactly and without a sign, with the paper's purpose and counts, and described the filter as removing interference \"without missing real signals\"; the registry finds the paper's own gap passing through intact. Its repair states the positive retained interval against the negative drift of a tone on the object, and its countertest is the address \"3i atlas ata drift rate sign\".", "rail": [], "note": "L(B ∪ A) in the equal-terms case (§0.4), realized as the knowledge object (objects.KO); its compression is objects.P" } }, "field": [ { "id": "B1", "card": "arXiv — [2512.18142] A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "fetched": "card; B1.html sha256 62b1473f172b476e, HTTP 200 at 2026-11-06T15:23:42Z", "origin": "card", "pool": "B_D" }, { "id": "B2", "card": "IOPscience — A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the ...", "fetched": "card; B2.html sha256 e87d8c7365710eea, HTTP 200 at 2026-11-06T15:24:01Z; Figure 4 image saved", "origin": "card", "pool": "B_D" }, { "id": "B3", "card": "Phys.org — Interstellar object 3I/ATLAS reveals no technosignatures in seven-hour radio ...", "fetched": "unreachable: https://phys.org/news/2026-06-interstellar-3iatlas-reveals-technosignatures-hour.html HTTP 429 at 2026-11-06T15:23:40Z; 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B8.html sha256 cca25bb402e51aa7, HTTP 200 at 2026-11-06T15:22:15Z; PDF HTTP 200 (sha256 cbee54ee4218b02b); Figure 4 image saved", "origin": "own_page", "pool": "B_R" }, { "id": "B9", "card": "Wikipedia — 3I/ATLAS (the article; no section on the radio searches)", "fetched": "wikipedia; B9.html sha256 d825d374456d3e34, HTTP 200 at 2026-11-06T15:22:15Z; wikitext HTTP 200 (sha256 7c89cc6307ef7cab)", "origin": "wikipedia", "pool": "B_R" } ], "field_claims": { "F1": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "In this campaign, we used the SETI Institute's Allen Telescope Array to observe 3I/ATLAS from 1-9 GHz.", "claim": "the campaign: the ATA observed 3I/ATLAS from 1 to 9 GHz", "modality": "stipulation", "kind": "definition", "kernel": true, "const": true, "lineage": "what it is: a narrowband search of 3I/ATLAS with the ATA", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F2": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "Similar to the NASA Voyager missions sent in 1977, science probes by extraterrestrial life (\"artifact technosignatures\") could be sent to explore other stellar systems like our own.", "claim": "motivation: probes by extraterrestrial life could explore other stellar systems", "modality": "hypothesis", "kind": "interpretation", "kernel": false, "const": false, "lineage": "why search an interstellar object", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F3": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "We detected nearly 74 million narrowband hits in 7.25\\,hr of data using the newly-developed search pipeline bliss.", "claim": "nearly 74 million narrowband hits in 7.25 hr with bliss", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "finding hits: bliss", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F4": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "We then blanked hits by frequency and drift rate to mitigate radio frequency interference in our dataset, narrowing the dataset down to ~2 million hits.", "claim": "hits blanked by frequency and drift rate to mitigate RFI, about 2 million left", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "frequency blanking", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F5": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "These hits were further filtered by the localization code NBeamAnalysis, and the remaining 211 hits were visually inspected in the time-frequency domain.", "claim": "NBeamAnalysis localization; 211 hits visually inspected", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "localization and the 211", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F6": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "We did not find any signals worthy of additional follow-up.", "claim": "the result: no signals worthy of follow-up", "modality": "documented", "kind": "fact", "kernel": true, "const": true, "lineage": "the result: nothing worthy of follow-up", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F7": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Abstract", "quote": "Accounting for the Doppler drift correction and given the non-detection, we are able to set an effective isotropic radiated power upper limit of 10-110 W on radio technosignatures from 3I/ATLAS across the frequency and drift rate ranges covered by our survey.", "claim": "the limit: EIRP upper limit 10-110 W across the frequency and drift rate ranges covered", "modality": "documented", "kind": "fact", "kernel": true, "const": true, "lineage": "the power limit and its ranges", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F8": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Submission history; Comments", "quote": "[Submitted on 19 Dec 2025 (v1), last revised 20 May 2026 (this version, v2)] … Replaced with updated version after acceptance to AJ", "claim": "two versions on arXiv; v2 replaced after acceptance to AJ", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "publication and access", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F9": { "source": "B1", "origin": "card", "pool": "B_D", "locus": "Authors", "quote": "Sofia Z. Sheikh and 14 other authors", "claim": "fifteen authors, Sofia Z. Sheikh first", "modality": "documented", "kind": "attribution", "kernel": false, "const": false, "lineage": "publication and access", "date": "2025-12-19 (v1; the abstract as revised in v2, 2026-05-20)", "quote_ok": true, "checked_against": "saved text B1.txt (sha256 71068677d526a7a9…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F10": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "header", "quote": "The following article is Open access … Published 2026 June 3 … Sofia Z. Sheikh et al 2026 AJ 172 1", "claim": "published open access in The Astronomical Journal 172, 1, 3 June 2026", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "publication and access", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F11": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "licence", "quote": "Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.", "claim": "licensed CC BY 4.0", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "publication and access", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F12": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§1.2", "quote": "The most unambiguous observable, however, would be narrowband emission, particularly in the radio, which can only be produced by technological sources.", "claim": "narrowband radio emission the most unambiguous observable of artificiality", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "why search an interstellar object", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F13": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§1.2", "quote": "We note that there is no compelling evidence yet that 3I/ATLAS has any nonnatural characteristics despite extensive observation by the scientific community. However, it is still worth setting constraints on technological radio emission from 3I/ATLAS throughout its passage of our solar system. This is standard practice", "claim": "no compelling evidence of nonnatural characteristics; constraints worth setting as standard practice", "modality": "self-description", "kind": "interpretation", "kernel": false, "const": false, "lineage": "why search an interstellar object", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F14": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§2", "quote": "Following the announcement of 3I/ATLAS, the ATA team rapidly designed an observing campaign and initiated on-sky observations on 2025 July 2, approximately 23 hr following the initial ATLAS report.", "claim": "observations began 2 July 2025, about 23 hr after the report", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the campaign: sessions, band, beams", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F15": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§2", "quote": "We took data across five observing sessions, with a total of 7.25 hr of on-source observations.", "claim": "five sessions, 7.25 hr on source", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the campaign: sessions, band, beams", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F16": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.1", "quote": "with a minimum drift rate of −4 Hz s−1, a maximum drift rate of 4 Hz s−1, and a signal-to-noise ratio (SNR) threshold of 15", "claim": "bliss run from −4 to +4 Hz/s at SNR 15", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "finding hits: bliss", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F17": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.1", "quote": "this survey uses one of the lowest SNR thresholds in any modern SETI survey", "claim": "one of the lowest SNR thresholds of any modern SETI survey", "modality": "self-description", "kind": "interpretation", "kernel": false, "const": false, "lineage": "finding hits: bliss", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F18": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.2", "quote": "To filter out signals that do not match the dynamics of 3I/ATLAS, we characterized the acceleration of the object during the times of observation, to compare the observed drift rates with those expected from the acceleration between the object and the Earth.", "claim": "the drift filter's stated purpose: remove signals that do not match the object's dynamics", "modality": "stipulation", "kind": "function", "kernel": true, "const": true, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F19": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.2", "quote": "We took the time derivative of the deldot parameter within JPL Horizons, which gives the apparent range rate relative to the observer in km/s.", "claim": "the acceleration from the time derivative of Horizons' deldot", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F20": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.2", "quote": "The values for all five sessions fell within 3.2 × 10−5 to 3.5 × 10−5 km s−2", "claim": "accelerations of 3.2 to 3.5 × 10−5 km/s² in all five sessions", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F21": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.2", "quote": "the maximum drift rate of 3I/ATLAS would be 1.01 Hz s−1 … the minimum drift rate of 3I/ATLAS would be 0.15 Hz s−1", "claim": "expected drift of 3I/ATLAS from 0.15 Hz/s (1336 MHz) to 1.01 Hz/s (8728 MHz), stated as magnitudes", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F22": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.2", "quote": "However, the rotation or tumbling period of 3I/ATLAS is not yet certain: this contribution, especially in solar system objects, can be extremely large.", "claim": "rotation or tumbling uncertain and possibly large", "modality": "self-description", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F23": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.2", "quote": "We filter our hits for drift rates between 0.05 and 1.5 Hz s−1 at all frequencies, sufficient to capture the known acceleration of 3I/ATLAS at all frequencies within our sample with some flexibility for additional rotational contributions.", "claim": "the drift-rate filter: 0.05 to 1.5 Hz/s at all frequencies", "modality": "stipulation", "kind": "function", "kernel": true, "const": true, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F24": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4, Figure 4 caption", "quote": "Note the peak of hits around 0 Hz s−1 (expected because most RFI transmitters are in the same reference frame as the telescope, i.e., on the ground). After the drift-rate cut, the count of hits is much more even across the restricted drift-rate range.", "claim": "most hits near zero drift, from ground transmitters; the retained range shown after the cut", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised", "figure_observed": { "files": [ "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B2-fig4.jpg", "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-fig4-D3.png" ], "by": "the composer, 2026-11-06", "observation": "Figure 4 in both the journal (B2) and arXiv v2 (B8) plots drift rate on a signed axis from −4 to +4 Hz/s; the bars labelled 'Drift Rate Range Hits' occupy 0 to about +1.5 Hz/s and none of the negative half. Read from the images; the legend label is in the image and not in the saved text." } }, "F25": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4", "quote": "we identified a total of 73,974,799 narrowband hits across the 7.25 hr of observation. … a total blanked bandwidth of 1269.8 MHz (∼16% of the total bandwidth) we were then left with ∼11 million hits. After drift-rate blanking, ∼2 million hits remained.", "claim": "the counts: 73,974,799 hits; 1269.8 MHz blanked; about 11 million; about 2 million after drift-rate blanking", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "frequency blanking", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F26": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4, Figure 3 caption", "quote": "Applying blanking ranges and drift-rate limits significantly reduced dense clusters of hits (reducing the total number of hits by 97.4%)", "claim": "blanking and drift limits reduced the hits by 97.4%", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "frequency blanking", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F27": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§3.3", "quote": "The NBeamAnalysis pipeline employs a series of different procedures which leverage two beams to identify signals that are consistent with a localized point source on the sky", "claim": "NBeamAnalysis compares two beams for a localized point source", "modality": "stipulation", "kind": "function", "kernel": false, "const": false, "lineage": "localization and the 211", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F28": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4", "quote": "Of these plots, 11 are events with SNR ratios greater than 5.29 … The remaining 200 plots were from two observations that did not produce any final signals above the threshold, resulting in the backup plotting functionality", "claim": "the 211: 11 above the SNR-ratio threshold and 200 backup plots from two sessions", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "localization and the 211", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F29": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4", "quote": "After visual inspection, all of these 211 events were easily attributable to RFI: none of the 11 sky-localized events depict narrowband drifting signals, and the narrowband drifting signals in the remaining 200 plots are not consistent with a sky-localized signal coming from 3I/Atlas, therefore zero outputs depict nonterrestrial technological signals.", "claim": "the 211 attributed to RFI by visual inspection; zero nonterrestrial technological signals", "modality": "documented", "kind": "fact", "kernel": true, "const": false, "lineage": "the 211 classified as interference", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F30": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4, Figure 7 caption", "quote": "this frequency is consistent with the L-band downlink for the Iridium satellites … satellites and other distant human transmitters can mimic the characteristics that we would expect from a true ETI technosignature", "claim": "Figure 7: a sky-localized event consistent with the Iridium downlink", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the 211 classified as interference", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F31": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§4, Figure 8 caption", "quote": "the signal has a similar SNR in both the on-beam and the off-beam, indicating a local interferer in the allocation allotted to fixed-satellite service (Earth-to-space)", "claim": "Figure 8: similar strength in both beams, a local interferer", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the 211 classified as interference", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F32": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§5", "quote": "Our system achieves maximum dechirping efficiency for drift rates of 0.113 Hz s−1 or less, with sensitivity getting gradually worse as the drift rates increase. … We also calculated a worst-case EIRP for the lowest dechirping efficiencies in our survey (i.e., those corresponding to 1.5 Hz s−1)", "claim": "sensitivity falls with drift rate; worst case at 1.5 Hz/s", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the power limit and its ranges", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F33": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§5", "quote": "the authors report a minimum EIRP value of 0.17 W. This value is about commensurate with a cellphone handset, significantly more sensitive than this work … this work increases the frequencies covered for 3I/ATLAS by a factor of 10", "claim": "MeerKAT more sensitive (0.17 W) over 900–1670 MHz; this search covers ten times the frequencies", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the power limit and its ranges", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F34": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§6", "quote": "This result implies EIRP upper limits of 10–110 W across our frequency and drift-rate range.", "claim": "the conclusion: 10–110 W across the frequency and drift-rate range", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the power limit and its ranges", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F35": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§6", "quote": "as far as we know, this is the first time that expected drift-rate contributions have been used as a filter for a technosignature search of a solar system object", "claim": "the first use of expected drift-rate contributions as a filter in a search of a solar system object", "modality": "self-description", "kind": "genealogy", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F36": { "source": "B2", "origin": "card", "pool": "B_D", "locus": "§6", "quote": "In the future, the blanking ranges for RFI in this project will be explored in more detail", "claim": "the blanking ranges to be explored further", "modality": "self-description", "kind": "prediction", "kernel": false, "const": false, "lineage": "frequency blanking", "date": "2026-06-03 (published; received 2025-11-21, accepted 2026-04-27)", "quote_ok": true, "checked_against": "saved text B2.txt (sha256 a996f70dd5df15c8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F37": { "source": "B3", "origin": "card", "pool": "B_D", "locus": "card snippet", "quote": "While no technosignatures were found, the study sets new constraints reinforcing that 3I/ATLAS is a natural object.", "claim": "press: new constraints reinforcing that the object is natural", "modality": "attributed", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the result in the press", "date": "2026-06-03 (the card)", "quote_ok": true, "checked_against": "the card's title and snippet as rendered in T (unreachable source), whitespace-normalised" }, "F38": { "source": "B4", "origin": "card", "pool": "B_D", "locus": "introduction", "quote": "There is currently no evidence to suggest that it is anything other than a natural astrophysical object.", "claim": "no evidence that it is other than natural", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "why search an interstellar object", "date": "undated (the page as fetched 2026-11-06)", "quote_ok": true, "checked_against": "saved text B4.txt (sha256 11e83765f9b4e2d8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F39": { "source": "B4", "origin": "card", "pool": "B_D", "locus": "introduction", "quote": "No technosignatures have been detected in any of these searches.", "claim": "no technosignatures in any Breakthrough Listen search of the object", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the result: nothing worthy of follow-up", "date": "undated (the page as fetched 2026-11-06)", "quote_ok": true, "checked_against": "saved text B4.txt (sha256 11e83765f9b4e2d8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F40": { "source": "B4", "origin": "card", "pool": "B_D", "locus": "Allen Telescope Array", "quote": "Data were acquired across frequencies of 1 - 9 GHz, reaching sensitivities between 10 - 110 W equivalent isotropic radiated power (EIRP). A publication reporting the results of the analysis has been submitted for peer review", "claim": "the project page: 1–9 GHz, 10–110 W; the paper given as submitted for review", "modality": "documented", "kind": "fact", "kernel": true, "const": false, "lineage": "the power limit and its ranges", "date": "undated (the page as fetched 2026-11-06)", "quote_ok": true, "checked_against": "saved text B4.txt (sha256 11e83765f9b4e2d8…) or the card's title and snippet as rendered in T, whitespace-normalised", "mark": { "mark": "superseded_in_source", "with": [ "F10" ], "note": "the page gives the paper as submitted for peer review; it was published in AJ on 3 June 2026 (B2). The page also states the 10–110 W without the drift-rate range (F7, F34)" } }, "F41": { "source": "B4", "origin": "card", "pool": "B_D", "locus": "Allen Telescope Array, figure caption", "quote": "The diagonal stripe at the center is visible in observations of 3I/ATLAS as well as in off-target observations - characteristics expected from local (human) sources of interference - and hence can be rejected as a candidate technosignature", "claim": "a stripe in both beams rejected as local interference", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the 211 classified as interference", "date": "undated (the page as fetched 2026-11-06)", "quote_ok": true, "checked_against": "saved text B4.txt (sha256 11e83765f9b4e2d8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F42": { "source": "B4", "origin": "card", "pool": "B_D", "locus": "Data", "quote": "Data from the ATA are available here.", "claim": "the ATA data public", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "publication and access", "date": "undated (the page as fetched 2026-11-06)", "quote_ok": true, "checked_against": "saved text B4.txt (sha256 11e83765f9b4e2d8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F43": { "source": "B4", "origin": "card", "pool": "B_D", "locus": "summary", "quote": "In summary, 3I/ATLAS continues to behave as expected from natural astrophysical processes.", "claim": "the object behaves as natural", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the result in the press", "date": "undated (the page as fetched 2026-11-06)", "quote_ok": true, "checked_against": "saved text B4.txt (sha256 11e83765f9b4e2d8…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F44": { "source": "B5", "origin": "card", "pool": "B_D", "locus": "¶1", "quote": "It feels like every week now we’re writing a new article about how 3I/ATLAS is not an alien technology. But it’s worth re-iterating, and perhaps taking a look at the methodology we used to prove that statement.", "claim": "press: the methodology used to prove the object not alien technology", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the result in the press", "date": "2026-01-06 (published)", "quote_ok": true, "checked_against": "saved text B5.txt (sha256 8ce18e8126032346…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F45": { "source": "B5", "origin": "card", "pool": "B_D", "locus": "¶5", "quote": "ATA monitored the frequency space between 1-12 GHz", "claim": "press: the band given as 1-12 GHz", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the campaign: sessions, band, beams", "date": "2026-01-06 (published)", "quote_ok": true, "checked_against": "saved text B5.txt (sha256 8ce18e8126032346…) or the card's title and snippet as rendered in T, whitespace-normalised", "mark": { "mark": "contradicts_primary", "with": [ "F1", "F15" ], "note": "the band given as 1-12 GHz; the paper (B1 Abstract; B2 Table 1, 'Comprising 7.25 Hr Over 1–9 GHz') gives 1–9 GHz" } }, "F46": { "source": "B5", "origin": "card", "pool": "B_D", "locus": "¶6", "quote": "Then they filtered for signals only matching the acceleration (red-shift) expected by 3I/ATLAS - a new feature of the bliss signal pipeline.", "claim": "press: the filter kept only signals matching the expected acceleration", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-01-06 (published)", "quote_ok": true, "checked_against": "saved text B5.txt (sha256 8ce18e8126032346…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F47": { "source": "B5", "origin": "card", "pool": "B_D", "locus": "¶7", "quote": "each one was determined to be caused by Earth-based radio frequency interference that had slipped through the automated filtering process. As such, the ATA team ended with a “null” result", "claim": "press: each of the 211 determined to be Earth-based interference; a null result", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the 211 classified as interference", "date": "2026-01-06 (published)", "quote_ok": true, "checked_against": "saved text B5.txt (sha256 8ce18e8126032346…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F48": { "source": "B5", "origin": "card", "pool": "B_D", "locus": "¶8", "quote": "That null result comes with a caveat, though. … For a 1 GHz signal, they calculated it would be around 10 watts - about 5 times the power of a typical cell phone. At 9 GHz, this power jumps up to around 110 watts.", "claim": "press: the caveat, the power limit by frequency", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the power limit and its ranges", "date": "2026-01-06 (published)", "quote_ok": true, "checked_against": "saved text B5.txt (sha256 8ce18e8126032346…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F49": { "source": "B5", "origin": "card", "pool": "B_D", "locus": "¶8", "quote": "But it seems pretty clear that a civilization advanced enough to intentionally send an interstellar object to another system would put in a radio transmitter that was stronger than two light bulbs put together.", "claim": "press: a sender would use a stronger transmitter", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the result in the press", "date": "2026-01-06 (published)", "quote_ok": true, "checked_against": "saved text B5.txt (sha256 8ce18e8126032346…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F50": { "source": "B6", "origin": "card", "pool": "B_D", "locus": "lede", "quote": "astronomers probed 3I/ATLAS for artificial radio transmissions but found only human-made interference", "claim": "press: only human-made interference found", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the 211 classified as interference", "date": "2026-06-09 (published, by its metadata)", "quote_ok": true, "checked_against": "saved text B6.txt (sha256 228cd2cef63bc608…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F51": { "source": "B6", "origin": "card", "pool": "B_D", "locus": "body", "quote": "After removing human interference and filtering for signals matching the object’s movement, only about 200 remained for review. All traced back to technology on the surface of the Earth or our own Earth-orbiting satellites.", "claim": "press: about 200 left after filtering; all traced to ground technology or satellites", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the 211 classified as interference", "date": "2026-06-09 (published, by its metadata)", "quote_ok": true, "checked_against": "saved text B6.txt (sha256 228cd2cef63bc608…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F52": { "source": "B6", "origin": "card", "pool": "B_D", "locus": "body", "quote": "While no technosignatures were found, the study sets new constraints reinforcing that 3I/ATLAS is a natural object.", "claim": "press (the SETI Institute statement): constraints reinforcing a natural object", "modality": "attributed", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the result in the press", "date": "2026-06-09 (published, by its metadata)", "quote_ok": true, "checked_against": "saved text B6.txt (sha256 228cd2cef63bc608…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F53": { "source": "B6", "origin": "card", "pool": "B_D", "locus": "body", "quote": "The observations place upper limits on the power of any radio transmitter on or near 3I/ATLAS, ruling out signals stronger than about 10-110 W — approximately the power of a household appliance — over the detected frequencies.", "claim": "press (the SETI Institute statement): any transmitter on or near the object above 10-110 W ruled out over the detected frequencies", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the power limit and its ranges", "date": "2026-06-09 (published, by its metadata)", "quote_ok": true, "checked_against": "saved text B6.txt (sha256 228cd2cef63bc608…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F54": { "source": "B6", "origin": "card", "pool": "B_D", "locus": "body", "quote": "“The results from 3I/ATLAS show how realistic it is to detect a signal with the technology we have today,” said Dr. Valeria Garcia Lopez", "claim": "Garcia Lopez: detection realistic with present technology", "modality": "attributed", "kind": "interpretation", "kernel": false, "const": false, "lineage": "why search an interstellar object", "date": "2026-06-09 (published, by its metadata)", "quote_ok": true, "checked_against": "saved text B6.txt (sha256 228cd2cef63bc608…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F55": { "source": "B7", "origin": "card", "pool": "B_D", "locus": "lede", "quote": "Sorry, true believers: It appears the interstellar comet 3I/ATLAS is indeed just a comet.", "claim": "press: the object just a comet", "modality": "interpretation", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the result in the press", "date": "2026-06-04 (published, by its metadata; the statement it quotes dated Wednesday, June 3)", "quote_ok": true, "checked_against": "saved text B7.txt (sha256 c915a563e6bcaebc…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F56": { "source": "B7", "origin": "card", "pool": "B_D", "locus": "body", "quote": "The researchers identified nearly 74 million such signals, which they then culled to about 200 after eliminating human interference and filtering out artifacts caused by 3I/ATLAS' movement. They were then able to explain away those final 200 as well, as signals generated here on Earth or by orbiting satellites.", "claim": "press: the filter described as removing artifacts of the object's movement; the 200 explained as Earth or satellite signals", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-06-04 (published, by its metadata; the statement it quotes dated Wednesday, June 3)", "quote_ok": true, "checked_against": "saved text B7.txt (sha256 c915a563e6bcaebc…) or the card's title and snippet as rendered in T, whitespace-normalised", "mark": { "mark": "contradicts_primary", "with": [ "F18", "F23" ], "note": "'filtering out artifacts caused by 3I/ATLAS' movement' states the filter's sense reversed: the paper's filter removes signals that do not match the object's dynamics and keeps those that do (B2 §3.2)" } }, "F57": { "source": "B7", "origin": "card", "pool": "B_D", "locus": "body", "quote": "\"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems,\" Sheikh said in the same statement. \"Given that, it is important that we understand the natural distribution of interstellar objects so that we will be able to identify any anomalies that could one day be signs of an artificial interstellar object.\"", "claim": "Sheikh: understand the natural distribution to recognise anomalies", "modality": "attributed", "kind": "interpretation", "kernel": false, "const": false, "lineage": "why search an interstellar object", "date": "2026-06-04 (published, by its metadata; the statement it quotes dated Wednesday, June 3)", "quote_ok": true, "checked_against": "saved text B7.txt (sha256 c915a563e6bcaebc…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F58": { "source": "B7", "origin": "card", "pool": "B_D", "locus": "body", "quote": "\"sets new constraints reinforcing that 3I/ATLAS is a natural object,\" SETI Institute officials wrote in the same statement.", "claim": "the SETI Institute's statement, attributed", "modality": "attributed", "kind": "attribution", "kernel": false, "const": false, "lineage": "the result in the press", "date": "2026-06-04 (published, by its metadata; the statement it quotes dated Wednesday, June 3)", "quote_ok": true, "checked_against": "saved text B7.txt (sha256 c915a563e6bcaebc…) or the card's title and snippet as rendered in T, whitespace-normalised" }, "F59": { "source": "B8", "origin": "own_page", "pool": "B_R", "locus": "§3.2 (PDF)", "quote": "We filter our hits for drift rates between 0.05–1.5 Hz/s at all frequencies", "claim": "the drift-rate filter in the arXiv wording, 0.05–1.5 Hz/s", "modality": "stipulation", "kind": "function", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-05-20 (arXiv v2)", "quote_ok": true, "checked_against": "saved text B8.txt (HTML, sha256 53fb69e4a124f063…) or B8-pdf-raw.txt (pdftotext of B8.pdf, sha256 66c2c0142951b3dc…), whitespace-normalised" }, "F60": { "source": "B8", "origin": "own_page", "pool": "B_R", "locus": "§3.2 (HTML)", "quote": "We filter our hits for drift rates between 0.05--1.5 Hz/s at all frequencies", "claim": "the drift-rate filter in the arXiv HTML rendering ('0.05--1.5')", "modality": "stipulation", "kind": "function", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-05-20 (arXiv v2)", "quote_ok": true, "checked_against": "saved text B8.txt (HTML, sha256 53fb69e4a124f063…) or B8-pdf-raw.txt (pdftotext of B8.pdf, sha256 66c2c0142951b3dc…), whitespace-normalised" }, "F61": { "source": "B8", "origin": "own_page", "pool": "B_R", "locus": "§3.2 (PDF)", "quote": "the minimum drift rate of 3I/ATLAS would be 0.15 Hz/s", "claim": "the expected minimum drift as a magnitude in Hz/s", "modality": "documented", "kind": "fact", "kernel": false, "const": false, "lineage": "the drift-rate filter", "date": "2026-05-20 (arXiv v2)", "quote_ok": true, "checked_against": "saved text B8.txt (HTML, sha256 53fb69e4a124f063…) or B8-pdf-raw.txt (pdftotext of B8.pdf, sha256 66c2c0142951b3dc…), whitespace-normalised" }, "F62": { "source": "B9", "origin": "wikipedia", "pool": "B_R", "locus": "section 'Alien spacecraft speculation'", "quote": "On 16 July 2025, astrophysicist Avi Loeb and other researchers of the Initiative for Interstellar Studies posted a paper on arXiv speculating that 3I/ATLAS could be an extraterrestrial spacecraft", "claim": "the encyclopedia's account of the technosignature question: Loeb's paper of July 2025", "modality": "attributed", "kind": "fact", "kernel": false, "const": false, "lineage": "the encyclopedia", "date": "2026-10-30 (the article's last edit)", "quote_ok": true, "checked_against": "saved text B9.txt (sha256 34864e27820be7d5…) or the wikitext B9.wiki, whitespace-normalised" }, "F63": { "source": "B9", "origin": "wikipedia", "pool": "B_R", "locus": "section 'Alien spacecraft speculation'", "quote": "the overwhelming consensus is that it is a comet", "claim": "the encyclopedia's report of the consensus (Live Science)", "modality": "attributed", "kind": "interpretation", "kernel": false, "const": false, "lineage": "the encyclopedia", "date": "2026-10-30 (the article's last edit)", "quote_ok": true, "checked_against": "saved text B9.txt (sha256 34864e27820be7d5…) or the wikitext B9.wiki, whitespace-normalised" } }, "field_sources": { "B1": "arXiv — [2512.18142] A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array", "B2": "IOPscience — A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the ...", "B3": "Phys.org — Interstellar object 3I/ATLAS reveals no technosignatures in seven-hour radio ...", "B4": "Berkeley SETI — Breakthrough Listen observations of interstellar object 3I/ATLAS", "B5": "Universe Today — Inside the Massive Radio Search of Our Newest Interstellar Guest", "B6": "Sci.News — Astronomers Scan Interstellar Object 3I/ATLAS for Alien Radio Signals | Sci.News", "B7": "Space — Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty | Space", "B8": "arXiv — A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array (v2 full text, HTML and PDF)", "B9": "Wikipedia — 3I/ATLAS (the article; no section on the radio searches)" }, "delta": { "T_vs_LB": "At the paper's title (T1, seven cards, B1–B7, the disclosed pool B_D; B8, the arXiv v2 full text, and B9, Wikipedia, are the reference pool and stand outside this comparison, §0.3), T composes a lede, six bulleted details and a pointer to the journal and arXiv, with a closing offer. Composed at its source's grain: the band, 1 to 9 GHz (F1), the 7.25 hours and five sessions (F15), the counts, ~74 million, ~2 million, 211 (F3, F4, F5, F25), 'drift-rate blanking', the paper's own term (F25), the journal and arXiv (F10, cards 1–2). Composed from the press layer on its own cards: 'Every single candidate signal was traced back to local human-made Earth technology, satellites, or interference' follows Sci.News, 'All traced back to technology on the surface of the Earth or our own Earth-orbiting satellites' (F51), where the paper's own sentence is 'easily attributable to RFI' (F29, available and not composed); 'rules out any active radio transmitters ... on or near 3I/ATLAS' follows the SETI Institute statement (F53, cards 6 and 7). Limit dropped: the statement's 'over the detected frequencies' (F53) and the paper's 'across the frequency and drift rate ranges covered by our survey' (F7) are both absent from T's power line. Force raised: 'the data firmly reinforces that 3I/ATLAS is a natural comet' against the statement's 'sets new constraints reinforcing that 3I/ATLAS is a natural object' (F52, F37); 'firmly' and 'comet' are on no card at this point. Available and not composed: the drift interval and its purpose (F18, F23), the expected drift magnitudes (F21), the bliss range and threshold (F16, F17), the composition of the 211 (F28), the paper's attribution sentence (F29) and its two examples (F30, F31), the limit's ranges (F7, F34), sensitivity by drift (F32), MeerKAT's deeper limit (F33), the paper's statement that the object shows no compelling evidence of nonnatural characteristics (F13), the first use of a drift filter (F35), the authors (F9; names in F54, F57), the motivation (F2, F12, F57), the public data (F42), the project page's 'submitted' (F40), Universe Today's 1-12 GHz (F45) and Space's reversed filter (F56). Composed without attribution: every line, at the coarse grain of reference description (recorded); the figures at the paper's resolution carry the institution and the array and no author (CAP-1-07). Content replaced by use: the closing offer. Nothing is assigned to another; nothing is denied.", "T_vs_LB_reading": "v0.10 §0.5: the first diff is ontological. T and the field agree on the entity, the ATA search; T's ontology is the press release's (an institution, an instrument, a count, a verdict), and it reads its seven cards through the SETI Institute statement they repeat. What it keeps out of its own cards is the method's conditions: the drift interval, its purpose and the ranges the limit is tied to, and the paper's own wording of the classification; the verdict on the object's nature is raised from 'reinforcing' to 'firmly'.", "LB_vs_LBA": "Admission adds, in one claim space with the field's: the sign of the drift filter read against the physics and the team's own ephemeris (A1742-03 to -07, A1743-03), with its limits (A1742-08, A1743-04) and its reanalysis (A1742-13, -14, A1743-05, -06); zero drift excluded (A1742-12); the 211 as a classification published as an identification (A1742-11, SM-05); the null read through instrument-conditioned nullity, unbounded retention and correlated blind spots (O1450-01, -02, -04; A1742-02, -15 to -20); the sophistry measure's homonymy at the counter-board (SM-01 to -04, O1727-01); the press chain and the dropped scope (A1742-21, A1743-01, -02, -10, -11, SM-06); the operator's reading with its counterweight (A1742-22 to -24, A1743-07 to -09, O1450-03); what stays open (A1742-25); and the compositions at the title and at the filter (CAP-1, CAP-2). Not surfaced: no archive source is on T's rail (archive_controlled_cites 0). Contradiction within the one ontology: the paper's 'sufficient to capture the known acceleration of 3I/ATLAS' (F23) against the archive's reading that the drift computed for an emitter lies in the removed half (A1742-07); both composed (P_coh), the archive's carried with its stated limit.", "alignment": { "T1_cards_claims": [ "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", "F11", "F12", "F13", "F14", "F15", "F16", "F17", "F18", "F19", "F20", "F21", "F22", "F23", "F24", "F25", "F26", "F27", "F28", "F29", "F30", "F31", "F32", "F33", "F34", "F35", "F36", "F37", "F38", "F39", "F40", "F41", "F42", "F43", "F44", "F45", "F46", "F47", "F48", "F49", "F50", "F51", "F52", "F53", "F54", "F55", "F56", "F57", "F58" ], "T1_composed": [ "F1", "F15", "F3", "F4", "F25", "F5", "F10", "F51", "F53", "F52", "F37", "F55" ], "T1_composed_note": "F51 and F53 composed from the press cards (Sci.News, Space); F52 and F37 composed with force raised ('firmly'); F25 supplies 'drift-rate blanking'", "T1_outside_cards": [ "'firmly' and 'natural comet' (T1-7: the cards say 'reinforcing that 3I/ATLAS is a natural object')", "'active' radio transmitters (T1-6: the cards say 'any radio transmitter')", "'optical, infrared' campaigns (T1-7: no card states them for this search)" ], "rule": "a field claim counts as composed when T states it at its source's grain or coarser; B_D only (B8, B9 excluded, §0.3); the transcript read for this alignment only" }, "pool_note": "T against L_F(B_D): B1–B7; L_F(B) against L(B ∪ A): B1–B9 with A" }, "kernel": [ { "K": "K1", "claim": "`A1742-07`", "source": "#1742", "M_src": "interpretation", "sense": "the sign of the filter", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: the executed filter script or signed catalogues, or an authors' statement on the sign)", "contrast": "rival claim: F23 (the interval \"sufficient to capture the known acceleration of 3I/ATLAS\")", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K2", "claim": "`A1742-04`", "source": "#1742", "M_src": "stipulation", "sense": "the sign of the filter", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "missing distinction: F21 gives the expected drift as magnitudes", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K3", "claim": "`A1742-08`", "source": "#1742", "M_src": "self-description", "sense": "the sign of the filter", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "qualified claim: A1742-07 (the finding's own limit)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K4", "claim": "`A1742-12`", "source": "#1742", "M_src": "interpretation", "sense": "the sign of the filter", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "missing distinction: F24 (zero drift as ground transmitters)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K5", "claim": "`A1742-11`", "source": "#1742", "M_src": "interpretation", "sense": "the 211 and their label", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "qualified claim: F29 (\"easily attributable to RFI\"), F51 (all traced)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K6", "claim": "`O1450-01`", "source": "#1450", "M_src": "stipulation", "sense": "the result and its limit", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "qualified claim: F7, F53 (the limit as stated and as carried)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K7", "claim": "`A1742-20`", "source": "#1742", "M_src": "interpretation", "sense": "the result and its limit", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "missing distinction: the paper measures no retention of hits matching the object", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K8", "claim": "`A1742-19`", "source": "#1742", "M_src": "interpretation", "sense": "the result and its limit", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "missing distinction: the field compares the searches by sensitivity only (F33)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K9", "claim": "`A1743-10`", "source": "#1743", "M_src": "stipulation", "sense": "the result and its limit", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "qualified claim: F53 (\"on or near 3I/ATLAS ... over the detected frequencies\")", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K10", "claim": "`SM-02`", "source": "sophistry measure, first run", "M_src": "interpretation", "sense": "the sign of the filter", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "missing distinction: F21, F61 (one name for magnitude and signed rate)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K11", "claim": "`A1742-22`", "source": "#1742", "M_src": "interpretation", "sense": "the operator's reading", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "rival claim: F44 (a methodology used \"to prove\" the object no alien technology)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K12", "claim": "`A1742-24`", "source": "#1742", "M_src": "self-description", "sense": "the operator's reading", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later composition at the address that states or drops the claim, attributed or not (uptake §8.3))", "contrast": "none", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K13", "claim": "`CAP-1-04`", "source": "Capture Registry", "M_src": "interpretation", "sense": "at the title", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a later Overview at the title that states the limit with its ranges)", "contrast": "qualified claim: F7 (the ranges the limit is tied to)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" }, { "K": "K14", "claim": "`CAP-2-01`", "source": "Capture Registry", "M_src": "documented", "sense": "at the title", "qualifiers carried": "—", "f (source's own falsifiers)": "— (none stated; watch: a capture at '3i atlas ata drift rate sign')", "contrast": "missing distinction: F23 (the interval without sign)", "resolver": "a later capture at 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array' (ADDR-f01db88eccfe) or at '3i atlas ata drift rate filter' (ADDR-a77b955b4cd5) on Google AI Overview, seated in the Capture Registry (§8.3)" } ], "kernel_T": [ { "claim": "F23", "note": "the drift interval, 0.05 to 1.5 Hz/s (card 2), absent; folded into \"drift-rate blanking\"" }, { "claim": "F18", "note": "the filter's purpose, to remove signals not matching the object's dynamics (card 2), absent" }, { "claim": "F7", "note": "the limit's ranges, 'across the frequency and drift rate ranges covered by our survey' (card 1), absent" }, { "claim": "F29", "note": "the paper's attribution, 'easily attributable to RFI' (card 2), absent; the press's tracing composed" }, { "claim": "F28", "note": "the 211 as 11 above threshold and 200 backup plots (card 2), absent" }, { "claim": "F13", "note": "no compelling evidence of nonnatural characteristics; constraints as standard practice (card 2), absent" }, { "claim": "F33", "note": "MeerKAT's deeper 0.17 W limit (card 2), absent" }, { "claim": "F9", "note": "the fifteen authors (card 1), absent (CAP-1-07)" } ], "ledger": { "archive": "datasets/negative-of-the-negative/v2/ledgers/ata-3i-atlas-search/ledger-archive.json", "field": "datasets/negative-of-the-negative/v2/ledgers/ata-3i-atlas-search/field.json", "selection": "datasets/negative-of-the-negative/v2/traversal/ata-3i-atlas-search/", "config": "datasets/negative-of-the-negative/v2/panel/configs/ata-3i-atlas-search.json", "intake": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/", "audit": null }, "ontology": { "composition": "equal", "composition_note": "equal-terms case (v0.9 §0.9, §4.1, unchanged in v0.10): one claim space; the paper's, the project page's and the press's claims and the archive's composed together by sense, in the pipeline's order; field claims composed as received, the archive's as claims on the same search", "case": { "value": "equal", "statement": "The archive reads the field's entity as the entity: the paper, its pipeline and its limit as the paper states them (#1742 §2.1, §5.1 quote the paper's own sentences). Its account adds senses on the same object, the sign of the filter against the team's own ephemeris, the label of the 211, what the null's acceptance covers, how the result travelled, and the operator's reading, each bounded by the archive's stated limits; it supplies no ontology the field lacks.", "loci": [ { "dep": 1742, "locus": "§2.1", "quote": "Two teams published radio searches: the Allen Telescope Array (Sheikh et al., arXiv:2512.18142v2, accepted manuscript of 2026-05-20) and Green Bank (arXiv:2512.19763v1, observations of 2025-12-18). FAST published a third in 1.05–1.45 GHz." }, { "dep": 1742, "locus": "§5.1.2", "quote": "The paper derived the right magnitude, gave it the sign of the acceleration, and its figure retains the positive interval. On the paper's own figure, the drift it computed for an emitter on 3I/ATLAS lies in the half its filter removed." }, { "dep": 1742, "locus": "§5.1.2", "quote": "The executed filter script and the signed before/after catalogues have not been obtained, so the claim stands on the manuscript, the figure and the physics; it does not show that a transmission was discarded. A search of part of the excluded class found no convincing signal (ChatGPT, 2026-11-02)." }, { "dep": 1743, "locus": "What the ATA's filter kept", "quote": "It shows that the documented method removed the class of signals it set out to keep. It does not show that a transmission was discarded. I haven't seen the executed filter code or the before-and-after hit lists, so the claim rests on the manuscript, the figure and the physics." }, { "dep": 1450, "locus": "§3.2", "quote": "A null result constrains only those hypotheses for which the end-to-end acceptance of the acquisition and analysis chain is sufficiently characterized." }, { "dep": 1742, "locus": "§9.12", "quote": "None of them says the thirteen are a transmission or that the searches missed one; the teams published their data, the precondition of every finding here." } ] }, "E_F": { "type": "C (public entity: a published scientific work, a radio technosignature search of an interstellar object)", "definition": "the ATA's narrowband search of 3I/ATLAS (Sheikh et al., arXiv:2512.18142; AJ 172, 1, 3 June 2026, open access): 1–9 GHz, 7.25 hr in five sessions from 2 July 2025; bliss found 73,974,799 hits at ±4 Hz/s; frequency blanking and a drift-rate filter ('between 0.05 and 1.5 Hz s−1 at all frequencies', to remove signals not matching the object's dynamics) left about 2 million; NBeamAnalysis left 211, all attributed to RFI on inspection; no signals worthy of follow-up; an EIRP upper limit of 10–110 W 'across the frequency and drift rate ranges covered by our survey'; carried in the press as a SETI Institute statement reinforcing that the object is natural", "claims": [ "F1", "F9", "F10", "F14", "F15", "F3", "F16", "F4", "F18", "F23", "F25", "F5", "F28", "F29", "F6", "F7", "F34", "F52", "F53" ] }, "E_A": { "definition": "the same search, in the archive's notebook and public account: a pipeline whose documented drift filter retains positive drift where a tone on the object drifts negative (on the manuscript, the figure and the physics; the executed filter unverified; no transmission shown discarded), whose 211 rejections are a classification published as an identification, whose null constrains only what its chain's acceptance characterizes, whose result travelled without its scope, and which the operator reads as built to rule a signal out at the least cost, against the counterweight that its data were published", "claims": [ "A1742-03", "A1742-04", "A1742-05", "A1742-07", "A1742-08", "A1742-11", "A1742-16", "A1742-20", "A1742-22", "A1742-24", "A1743-03", "A1743-04", "A1743-10", "O1450-01", "SM-02" ], "defining_papers": [ 1742, 1743, 1450, 1727 ], "defining_records": [ "Capture Registry entry ata-3i-atlas-technosignature-search-paper-aio-20261106 (OBS-f18605c5f3ba), https://www.alexanarch.org/captures/ata-3i-atlas-technosignature-search-paper-aio-20261106/", "Capture Registry entry 3i-atlas-ata-drift-rate-filter-aio-20261104 (OBS-0cb410947c4b), https://www.alexanarch.org/captures/3i-atlas-ata-drift-rate-filter-aio-20261104/", "the sophistry measure's first run, rebuild/3i-atlas-signal-search/claude/run-2026-11-03/sophistry/FINDINGS-sophistry.md (S4, S6, S7)" ] }, "rho": { "value": "extends", "status": "read from #1742 (§2, §5, §6, §9, §10, §12), #1743 (whole), #1450 (§2.1–§2.3, §3.2), #1727 (§2.1), the two capture records and the sophistry run, 2026-11-06", "statement": "The archive reads the paper as the field presents it and adds, on the same object: the sign of its drift filter against the physics (A1742-04, -07; A1743-03), bounded by its own limit (A1742-08; A1743-04); zero drift excluded (A1742-12); the label of the 211 (A1742-11; SM-05); the acceptance its null characterizes and the retention it leaves unbounded (O1450-01, -02; A1742-16, -17, -20); the press chain and the dropped scope (A1743-02, -10); and the operator's reading with its counterweight (A1742-22, -24). Where the archive's sign reading contradicts the paper's 'sufficient to capture the known acceleration' (F23), both are composed under P_coh.", "claims": [ "A1742-04", "A1742-07", "A1742-08", "A1742-12", "A1742-11", "A1742-16", "A1742-17", "A1742-20", "A1742-22", "A1742-24", "A1743-03", "A1743-04", "A1743-02", "A1743-10", "O1450-01", "O1450-02", "SM-05" ], "guard": "ρ = extends claims an addition and no more: the archive's sign reading stands on the manuscript, the figure and the physics and does not show that a transmission was discarded (A1742-08); its class claims on null results apply to the search through the class the field sources; the operator's reading is composed as his reading, with the counterweight the same record states.", "considered": [ { "value": "constructs", "rejected": "the archive does not read the paper as made by reception; it quotes the paper's own sentences as the account of its method" }, { "value": "revises", "rejected": "the paper is not the archive's own entity" } ] }, "translation": [ { "lineage": "what it is: a narrowband search of 3I/ATLAS with the ATA", "field_claims": [ "F1" ], "received": "F1 (B1, Abstract): \"In this campaign, we used the SETI Institute's Allen Telescope Array to observe 3I/ATLAS from 1-9 GHz.\"", "receiving_text": "—", "translation": "untranslated: composed as received beside A1742-01", "archive_claims": [ "A1742-01" ] }, { "lineage": "why search an interstellar object", "field_claims": [ "F2", "F12", "F13", "F38", "F54", "F57" ], "received": "F2 (B1, Abstract): \"Similar to the NASA Voyager missions sent in 1977, science probes by extraterrestrial life (\"artifact technosignatures\") could be sent to explore other stellar systems like our own.\" | F12 (B2, §1.2): \"The most unambiguous observable, however, would be narrowband emission, particularly in the radio, which can only be produced by technological sources.\" | F13 (B2, §1.2): \"We note that there is no compelling evidence yet that 3I/ATLAS has any nonnatural characteristics despite extensive observation by the scientific community. However, it is still worth setting constraints on technological radio emission from 3I/ATLAS throughout its passage of our solar system. This is standard practice\" | F38 (B4, introduction): \"There is currently no evidence to suggest that it is anything other than a natural astrophysical object.\" | F54 (B6, body): \"“The results from 3I/ATLAS show how realistic it is to detect a signal with the technology we have today,” said Dr. Valeria Garcia Lopez\" | F57 (B7, body): \"\"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems,\" Sheikh said in the same statement. \"Given that, it is important that we understand the natural distribution of interstellar objects so that we will be able to identify any anomalies that could one day be signs of an artificial interstellar object.\"\"", "receiving_text": "—", "translation": "untranslated: composed as received", "archive_claims": [] }, { "lineage": "finding hits: bliss", "field_claims": [ "F3", "F16", "F17" ], "received": "F3 (B1, Abstract): \"We detected nearly 74 million narrowband hits in 7.25\\,hr of data using the newly-developed search pipeline bliss.\" | F16 (B2, §3.1): \"with a minimum drift rate of −4 Hz s−1, a maximum drift rate of 4 Hz s−1, and a signal-to-noise ratio (SNR) threshold of 15\" | F17 (B2, §3.1): \"this survey uses one of the lowest SNR thresholds in any modern SETI survey\"", "receiving_text": "—", "translation": "untranslated: composed as received", "archive_claims": [] }, { "lineage": "frequency blanking", "field_claims": [ "F4", "F25", "F26", "F36" ], "received": "F4 (B1, Abstract): \"We then blanked hits by frequency and drift rate to mitigate radio frequency interference in our dataset, narrowing the dataset down to ~2 million hits.\" | F25 (B2, §4): \"we identified a total of 73,974,799 narrowband hits across the 7.25 hr of observation. … a total blanked bandwidth of 1269.8 MHz (∼16% of the total bandwidth) we were then left with ∼11 million hits. After drift-rate blanking, ∼2 million hits remained.\" | F26 (B2, §4, Figure 3 caption): \"Applying blanking ranges and drift-rate limits significantly reduced dense clusters of hits (reducing the total number of hits by 97.4%)\" | F36 (B2, §6): \"In the future, the blanking ranges for RFI in this project will be explored in more detail\"", "receiving_text": "—", "translation": "untranslated: composed as received beside CAP-2-04", "archive_claims": [ "CAP-2-04" ] }, { "lineage": "localization and the 211", "field_claims": [ "F5", "F27", "F28" ], "received": "F5 (B1, Abstract): \"These hits were further filtered by the localization code NBeamAnalysis, and the remaining 211 hits were visually inspected in the time-frequency domain.\" | F27 (B2, §3.3): \"The NBeamAnalysis pipeline employs a series of different procedures which leverage two beams to identify signals that are consistent with a localized point source on the sky\" | F28 (B2, §4): \"Of these plots, 11 are events with SNR ratios greater than 5.29 … The remaining 200 plots were from two observations that did not produce any final signals above the threshold, resulting in the backup plotting functionality\"", "receiving_text": "—", "translation": "untranslated: composed as received", "archive_claims": [] }, { "lineage": "the result: nothing worthy of follow-up", "field_claims": [ "F6", "F39" ], "received": "F6 (B1, Abstract): \"We did not find any signals worthy of additional follow-up.\" | F39 (B4, introduction): \"No technosignatures have been detected in any of these searches.\"", "receiving_text": "—", "translation": "untranslated: composed as received", "archive_claims": [] }, { "lineage": "the power limit and its ranges", "field_claims": [ "F7", "F32", "F33", "F34", "F40", "F48", "F53" ], "received": "F7 (B1, Abstract): \"Accounting for the Doppler drift correction and given the non-detection, we are able to set an effective isotropic radiated power upper limit of 10-110 W on radio technosignatures from 3I/ATLAS across the frequency and drift rate ranges covered by our survey.\" | F32 (B2, §5): \"Our system achieves maximum dechirping efficiency for drift rates of 0.113 Hz s−1 or less, with sensitivity getting gradually worse as the drift rates increase. … We also calculated a worst-case EIRP for the lowest dechirping efficiencies in our survey (i.e., those corresponding to 1.5 Hz s−1)\" | F33 (B2, §5): \"the authors report a minimum EIRP value of 0.17 W. This value is about commensurate with a cellphone handset, significantly more sensitive than this work … this work increases the frequencies covered for 3I/ATLAS by a factor of 10\" | F34 (B2, §6): \"This result implies EIRP upper limits of 10–110 W across our frequency and drift-rate range.\" | F40 (B4, Allen Telescope Array): \"Data were acquired across frequencies of 1 - 9 GHz, reaching sensitivities between 10 - 110 W equivalent isotropic radiated power (EIRP). A publication reporting the results of the analysis has been submitted for peer review\" | F48 (B5, ¶8): \"That null result comes with a caveat, though. … For a 1 GHz signal, they calculated it would be around 10 watts - about 5 times the power of a typical cell phone. At 9 GHz, this power jumps up to around 110 watts.\" | F53 (B6, body): \"The observations place upper limits on the power of any radio transmitter on or near 3I/ATLAS, ruling out signals stronger than about 10-110 W — approximately the power of a household appliance — over the detected frequencies.\"", "receiving_text": "—", "translation": "untranslated: composed as received beside CAP-1-04, CAP-1-05, A1742-02, A1742-15, A1742-16, A1742-19, A1743-01, A1743-10, O1450-01, O1450-04", "archive_claims": [ "CAP-1-04", "CAP-1-05", "A1742-02", "A1742-15", "A1742-16", "A1742-19", "A1743-01", "A1743-10", "O1450-01", "O1450-04" ] }, { "lineage": "publication and access", "field_claims": [ "F8", "F9", "F10", "F11", "F42" ], "received": "F8 (B1, Submission history; Comments): \"[Submitted on 19 Dec 2025 (v1), last revised 20 May 2026 (this version, v2)] … Replaced with updated version after acceptance to AJ\" | F9 (B1, Authors): \"Sofia Z. Sheikh and 14 other authors\" | F10 (B2, header): \"The following article is Open access … Published 2026 June 3 … Sofia Z. Sheikh et al 2026 AJ 172 1\" | F11 (B2, licence): \"Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence.\" | F42 (B4, Data): \"Data from the ATA are available here.\"", "receiving_text": "—", "translation": "untranslated: composed as received beside A1742-18, A1742-25, O1450-03", "archive_claims": [ "A1742-18", "A1742-25", "O1450-03" ] }, { "lineage": "the campaign: sessions, band, beams", "field_claims": [ "F14", "F15", "F45" ], "received": "F14 (B2, §2): \"Following the announcement of 3I/ATLAS, the ATA team rapidly designed an observing campaign and initiated on-sky observations on 2025 July 2, approximately 23 hr following the initial ATLAS report.\" | F15 (B2, §2): \"We took data across five observing sessions, with a total of 7.25 hr of on-source observations.\" | F45 (B5, ¶5): \"ATA monitored the frequency space between 1-12 GHz\"", "receiving_text": "—", "translation": "untranslated: composed as received", "archive_claims": [] }, { "lineage": "the drift-rate filter", "field_claims": [ "F18", "F19", "F20", "F21", "F22", "F23", "F24", "F35", "F46", "F56", "F59", "F60", "F61" ], "received": "F18 (B2, §3.2): \"To filter out signals that do not match the dynamics of 3I/ATLAS, we characterized the acceleration of the object during the times of observation, to compare the observed drift rates with those expected from the acceleration between the object and the Earth.\" | F19 (B2, §3.2): \"We took the time derivative of the deldot parameter within JPL Horizons, which gives the apparent range rate relative to the observer in km/s.\" | F20 (B2, §3.2): \"The values for all five sessions fell within 3.2 × 10−5 to 3.5 × 10−5 km s−2\" | F21 (B2, §3.2): \"the maximum drift rate of 3I/ATLAS would be 1.01 Hz s−1 … the minimum drift rate of 3I/ATLAS would be 0.15 Hz s−1\" | F22 (B2, §3.2): \"However, the rotation or tumbling period of 3I/ATLAS is not yet certain: this contribution, especially in solar system objects, can be extremely large.\" | F23 (B2, §3.2): \"We filter our hits for drift rates between 0.05 and 1.5 Hz s−1 at all frequencies, sufficient to capture the known acceleration of 3I/ATLAS at all frequencies within our sample with some flexibility for additional rotational contributions.\" | F24 (B2, §4, Figure 4 caption): \"Note the peak of hits around 0 Hz s−1 (expected because most RFI transmitters are in the same reference frame as the telescope, i.e., on the ground). After the drift-rate cut, the count of hits is much more even across the restricted drift-rate range.\" | F35 (B2, §6): \"as far as we know, this is the first time that expected drift-rate contributions have been used as a filter for a technosignature search of a solar system object\" | F46 (B5, ¶6): \"Then they filtered for signals only matching the acceleration (red-shift) expected by 3I/ATLAS - a new feature of the bliss signal pipeline.\" | F56 (B7, body): \"The researchers identified nearly 74 million such signals, which they then culled to about 200 after eliminating human interference and filtering out artifacts caused by 3I/ATLAS' movement. They were then able to explain away those final 200 as well, as signals generated here on Earth or by orbiting satellites.\" | F59 (B8, §3.2 (PDF)): \"We filter our hits for drift rates between 0.05–1.5 Hz/s at all frequencies\" | F60 (B8, §3.2 (HTML)): \"We filter our hits for drift rates between 0.05--1.5 Hz/s at all frequencies\" | F61 (B8, §3.2 (PDF)): \"the minimum drift rate of 3I/ATLAS would be 0.15 Hz/s\"", "receiving_text": "—", "translation": "untranslated: composed as received beside CAP-2-01, CAP-2-02, CAP-2-03, CAP-2-05, CAP-2-06, SM-01, SM-02, SM-03, SM-04, A1742-03, A1742-04, A1742-05, A1742-06, A1742-07, A1742-08, A1742-09, A1742-10, A1742-12, A1742-13, A1742-14, A1742-17, A1742-20, A1743-03, A1743-04, A1743-05, A1743-06, A1743-08, O1450-02, O1727-01", "archive_claims": [ "CAP-2-01", "CAP-2-02", "CAP-2-03", "CAP-2-05", "CAP-2-06", "SM-01", "SM-02", "SM-03", "SM-04", "A1742-03", "A1742-04", "A1742-05", "A1742-06", "A1742-07", "A1742-08", "A1742-09", "A1742-10", "A1742-12", "A1742-13", "A1742-14", "A1742-17", "A1742-20", "A1743-03", "A1743-04", "A1743-05", "A1743-06", "A1743-08", "O1450-02", "O1727-01" ] }, { "lineage": "the 211 classified as interference", "field_claims": [ "F29", "F30", "F31", "F41", "F47", "F50", "F51" ], "received": "F29 (B2, §4): \"After visual inspection, all of these 211 events were easily attributable to RFI: none of the 11 sky-localized events depict narrowband drifting signals, and the narrowband drifting signals in the remaining 200 plots are not consistent with a sky-localized signal coming from 3I/Atlas, therefore zero outputs depict nonterrestrial technological signals.\" | F30 (B2, §4, Figure 7 caption): \"this frequency is consistent with the L-band downlink for the Iridium satellites … satellites and other distant human transmitters can mimic the characteristics that we would expect from a true ETI technosignature\" | F31 (B2, §4, Figure 8 caption): \"the signal has a similar SNR in both the on-beam and the off-beam, indicating a local interferer in the allocation allotted to fixed-satellite service (Earth-to-space)\" | F41 (B4, Allen Telescope Array, figure caption): \"The diagonal stripe at the center is visible in observations of 3I/ATLAS as well as in off-target observations - characteristics expected from local (human) sources of interference - and hence can be rejected as a candidate technosignature\" | F47 (B5, ¶7): \"each one was determined to be caused by Earth-based radio frequency interference that had slipped through the automated filtering process. As such, the ATA team ended with a “null” result\" | F50 (B6, lede): \"astronomers probed 3I/ATLAS for artificial radio transmissions but found only human-made interference\" | F51 (B6, body): \"After removing human interference and filtering for signals matching the object’s movement, only about 200 remained for review. All traced back to technology on the surface of the Earth or our own Earth-orbiting satellites.\"", "receiving_text": "—", "translation": "untranslated: composed as received beside CAP-1-02, CAP-1-03, SM-05, A1742-11", "archive_claims": [ "CAP-1-02", "CAP-1-03", "SM-05", "A1742-11" ] }, { "lineage": "the result in the press", "field_claims": [ "F37", "F43", "F44", "F49", "F52", "F55", "F58" ], "received": "F37 (B3, card snippet): \"While no technosignatures were found, the study sets new constraints reinforcing that 3I/ATLAS is a natural object.\" | F43 (B4, summary): \"In summary, 3I/ATLAS continues to behave as expected from natural astrophysical processes.\" | F44 (B5, ¶1): \"It feels like every week now we’re writing a new article about how 3I/ATLAS is not an alien technology. But it’s worth re-iterating, and perhaps taking a look at the methodology we used to prove that statement.\" | F49 (B5, ¶8): \"But it seems pretty clear that a civilization advanced enough to intentionally send an interstellar object to another system would put in a radio transmitter that was stronger than two light bulbs put together.\" | F52 (B6, body): \"While no technosignatures were found, the study sets new constraints reinforcing that 3I/ATLAS is a natural object.\" | F55 (B7, lede): \"Sorry, true believers: It appears the interstellar comet 3I/ATLAS is indeed just a comet.\" | F58 (B7, body): \"\"sets new constraints reinforcing that 3I/ATLAS is a natural object,\" SETI Institute officials wrote in the same statement.\"", "receiving_text": "—", "translation": "untranslated: composed as received beside CAP-1-06, SM-06, A1742-21, A1743-02, A1743-11", "archive_claims": [ "CAP-1-06", "SM-06", "A1742-21", "A1743-02", "A1743-11" ] }, { "lineage": "the encyclopedia", "field_claims": [ "F62", "F63" ], "received": "F62 (B9, section 'Alien spacecraft speculation'): \"On 16 July 2025, astrophysicist Avi Loeb and other researchers of the Initiative for Interstellar Studies posted a paper on arXiv speculating that 3I/ATLAS could be an extraterrestrial spacecraft\" | F63 (B9, section 'Alien spacecraft speculation'): \"the overwhelming consensus is that it is a comet\"", "receiving_text": "—", "translation": "untranslated: composed as received", "archive_claims": [] } ], "receiving_texts": "equal-terms case: every field claim composed as received, beside the archive claims it stands with; no receiving text" }, "measure": { "rule": "v0.9 §4.10 (unchanged in v0.10): KO_B sentences surviving in the KO at similarity ≥ 0.95, with positions (computed as apply_v09.py does: difflib.SequenceMatcher ratio, the best KO sentence for each KO_B sentence)", "v0.10": { "surviving": 0, "of": 11, "positions": [ null, null, null, null, null, null, null, null, null, null, null ] }, "v0.9": { "surviving": 0, "of": 11, "positions": [ null, null, null, null, null, null, null, null, null, null, null ] }, "opening_run": { "rule": "§5.10 (equal-terms case): the field-only KO's sentences as the KO's opening run in their own order", "breach": false }, "blocks": { "rule": "§4.1 (equal-terms case): the KO does not open with the field as a block or close with the archive as one; sentences typed by the ledgers of the claims they cite (F field-only, A archive-only, M both)", "sequence": "MAFFFFFFFFFFMAAAAAAAMAFFFFFAAFFFFAAAAAFFFAAFAAAAMAAAA", "field_only_head": 0, "archive_only_tail": 4, "breach": false, "note": "the archive-only tail is the compositions at the title (Capture Registry findings), placed last as relations of the entity; the field-only head is 0" }, "max_similarity": [ 0.231, 0.646, 0.252, 0.419, 0.198, 0.355, 0.43, 0.504, 0.588, 0.419, 0.624 ], "ko_sentence_1_max_similarity_to_KO_B": 0.289 }, "homonyms": { "names": [], "basis": "No card is a homonym, and T composes the paper itself. The name is the paper's full title; 'the ATA search' and 'Sheikh et al.' are its other names in the archive. The distinct entities below are named by the field or the archive beside the entity and are never senses of its name.", "distinct_entities": [ "3I/ATLAS (C/2025 N1), the object searched, a row of its own (3i-atlas)", "the Allen Telescope Array, the instrument, operated by the SETI Institute", "the Green Bank search (arXiv:2512.19763) and the FAST search, the other published radio searches (A1742-01)", "MeerKAT's BLUSE search (Pisano et al.), 0.17 W over 900–1670 MHz (F33)", "Breakthrough Listen and its project page (B4)", "bliss and NBeamAnalysis, the codes of the pipeline (F3, F27)", "the SETI Institute's statement on the publication (F52, F53, F58)", "Intelligent Living's account and FAQ (A1742-21, A1743-02)", "the thirteen Green Bank features at 1665–1668 MHz, a row of their own (3i-atlas-1665-1668-mhz)", "Avi Loeb's position on the object, a row of its own (avi-loeb-3i-atlas)" ] }, "notes": [ "One address as T, Google AI Overview (expanded), signed out, incognito, 2026-11-06: ata-3i-atlas-technosignature-search-paper-aio-20261106 (OBS-f18605c5f3ba, ADDR-f01db88eccfe, AXN:0C1B.CAPTURE.🔆🚪∞👁️⚫🕓), address page https://www.alexanarch.org/addresses/a-search-for-radio-technosignatures-from-interstellar-object-3iatlas-with-the-al/; seven cards, 180 words in the answer body with a closing offer. Further address, recorded and not T: '3i atlas ata drift rate filter', 3i-atlas-ata-drift-rate-filter-aio-20261104 (OBS-0cb410947c4b, ADDR-a77b955b4cd5, AXN:0C00.CAPTURE.🟤🌋💙👁️🔐💥), 2026-11-04, address page https://www.alexanarch.org/addresses/3i-atlas-ata-drift-rate-filter/; its findings are ledgered as CAP-2-NN.", "T's paste copied to datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/paste-ata-paper-aio.txt (sha256 aabe7170c3d44a2aa419692a6751574e408ac5e850403902f8e1f5296a9714cb) from rebuild/capture-registry/intake-20261106-3i-atlas-four/paste-ata-paper-aio.txt.", "Fetching: every reachable source saved verbatim with curl and the agent 'Mozilla/5.0 (compatible; alexanarch-non)' on 2026-11-06 between 15:22 and 15:27 UTC, raw and text with sha256 in field.json. Card 3 (Phys.org) returned HTTP 429 on one attempt and is carried by its snippet; no retry. The IOPscience URL was taken from the DOI on the saved Sci.News and Space pages after three title searches returned none. Figure 4 was saved from both the journal and arXiv v2 and read by eye: the retained hits occupy 0 to +1.5 Hz/s on a signed axis in both.", "Pools (v0.10 §0.3, §3.1(a)): B_D = B1–B7 (58 claims); B_R = B8, the paper's arXiv v2 full text (3 claims), and B9, the Wikipedia article '3I/ATLAS' (2 claims), which mentions no radio search and has no SETI section; the Wikipedia article 'Allen Telescope Array' does not mention 3I/ATLAS.", "The paper's own wording, from the open text: the limit, 'we are able to set an effective isotropic radiated power upper limit of 10-110 W on radio technosignatures from 3I/ATLAS across the frequency and drift rate ranges covered by our survey' (arXiv abstract, F7; the journal prints '10–110 W'); the interval, 'We filter our hits for drift rates between 0.05 and 1.5 Hz s−1 at all frequencies' (journal, F23), '0.05–1.5 Hz/s' in the arXiv PDF (F59) and '0.05--1.5 Hz/s' in the arXiv HTML (F60).", "Cross-links: rows https://www.alexanarch.org/non/avi-loeb-3i-atlas/, https://www.alexanarch.org/non/3i-atlas-1665-1668-mhz/, https://www.alexanarch.org/non/3i-atlas/; deposits #1742 https://www.alexanarch.org/s/records/1742/ and #1743 https://www.alexanarch.org/s/records/1743/; the notebook's pages https://www.lagrangeobservatory.org/atlas and https://www.provenanceerasure.org/atlas; the public piece https://www.semanticeconomy.org/firm-no; captures https://www.alexanarch.org/captures/ata-3i-atlas-technosignature-search-paper-aio-20261106/ and https://www.alexanarch.org/captures/3i-atlas-ata-drift-rate-filter-aio-20261104/; external sources read: https://arxiv.org/abs/2512.18142, https://arxiv.org/html/2512.18142v2, https://arxiv.org/pdf/2512.18142v2, https://iopscience.iop.org/article/10.3847/1538-3881/ae6651, https://seti.berkeley.edu/atlas/, https://www.universetoday.com/articles/inside-the-massive-radio-search-of-our-newest-interstellar-guest, https://www.sci.news/astronomy/interstellar-object-3i-atlas-alien-radio-signals-14830.html, https://www.space.com/space-exploration/search-for-life/not-an-alien-spacecraft-hunt-for-technosignatures-around-interstellar-comet-3i-atlas-comes-up-empty, https://en.wikipedia.org/wiki/3I/ATLAS; unreachable: https://phys.org/news/2026-06-interstellar-3iatlas-reveals-technosignatures-hour.html.", "Capture findings the field ledger qualifies (reported; left unfixed): (1) CAP-1 findings[1]: the Overview's 'traced back to local human-made Earth technology, satellites' stands on its own card 6 (Sci.News: 'All traced back to technology on the surface of the Earth or our own Earth-orbiting satellites', F51) and card 7 (Space, F56); the step beyond the paper ('easily attributable to RFI', F29) is the press layer's, composed by the Overview. (2) CAP-1 findings[2]: 'any ... radio transmitter on or near 3I/ATLAS' is the SETI Institute statement on cards 6 and 7 (F53), which keeps 'over the detected frequencies'; the Overview drops that phrase too, and adds 'active'. (3) CAP-1 findings[4]: 'drift-rate blanking' is the paper's own term (journal §4: 'After drift-rate blanking, ∼2 million hits remained', F25; abstract 'blanked hits by frequency and drift rate'), so the stage is unnamed in the paper's own summary sentences as well. (4) CAP-2 reading and findings[3]: the 97.4% reduction attributed to the press (Astrobiology Web) is the paper's own Figure 3 caption ('reducing the total number of hits by 97.4%', F26). (5) CAP-1 findings[0], [3], [5] and CAP-2 findings[0], [1], [2], [4] stand against the saved texts.", "#1742 and #1743 against the field ledger (reported; left unfixed): the quoted drift sentence ('between 0.05–1.5 Hz/s', #1742 §5.1) is the arXiv v2 PDF's wording; the published journal text (card 2) reads 'between 0.05 and 1.5 Hz s−1'; the substance is the same and the journal's Figure 4 matches the arXiv figure. #1742 §2.1 cites the accepted manuscript and not the journal publication of 3 June 2026 (AJ 172, 1). #1742 §5.2 gives Figure 7 at 1626.675919 MHz; the arXiv HTML's image file name reads 'fmid1626.675918' (a last-digit difference, unverified against the figure's own label). Berkeley SETI's page still gives the paper as submitted for peer review (F40). No claim of #1742 or #1743 is contradicted by a saved source.", "Neighbouring rows (not edited): avi-loeb-3i-atlas, 3i-atlas-1665-1668-mhz (the thirteen; #1743 places them in the drift class the filter removed), 3i-atlas.", "Not run: scripts/build_non.py (only --check), scripts/non_axn.py; panel.json not edited; the session seats the panel entry, mints the AXN and builds the pages." ], "composition": { "source": "this row (composed directly under the brief rebuild/negative-of-the-negative/v010/BRIEF-NEW-ROWS-3I-ATLAS.md)", "composer": "Claude (Opus 5.5), subagent, 2026-11-06", "spec": "EA-NEGONT-02 v0.10 (#1726)", "defining_material_read": [ { "what": "the specification v0.10", "file": "data/texts/AXN-0B79-text.md", "read": "whole" }, { "what": "the briefs", "file": "rebuild/negative-of-the-negative/v010/BRIEF-NEW-ROWS-3I-ATLAS.md, BRIEF-NEW-ROW-LAYER.md; v09/BRIEF-NEW-ROW-AGGREGATOR.md, -LABOR.md, -LEFT.md", "read": "whole" }, { "what": "the captures", "file": "data/EA-WG-CAPTURES-01.json entries[slug == ata-3i-atlas-technosignature-search-paper-aio-20261106], [slug == 3i-atlas-ata-drift-rate-filter-aio-20261104]", "read": "whole (transcripts read for T and the delta only)" }, { "what": "field texts", "file": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B1–B9", "read": "whole (B2 the journal text at the abstract, §1–§6 and the figure captions; B8 at §3.2, the abstract and Figure 4; B9 at its sections and by string)" }, { "what": "#1742 What the Filters Kept", "file": "data/texts/AXN-0C17-text.md", "read": "§0–§2, §5, §6, §8–§13 whole; §3, §4, §7 by their headings" }, { "what": "#1743 A Firm No", "file": "data/texts/AXN-0C1C-text.md", "read": "whole" }, { "what": "the sophistry measure, first run", "file": "rebuild/3i-atlas-signal-search/claude/run-2026-11-03/sophistry/FINDINGS-sophistry.md", "read": "whole at S4, S6, S7 and the closing sections" }, { "what": "#1450, #1727, #454", "file": "data/texts/AXN-05DB-text.md, AXN-0BDC-text.md, AXN-010F-text.md", "read": "#1450 §2.1–§2.3, §3.2; #1727 §2.1; #454 by string for the search (no locus)" }, { "what": "the exemplar row", "file": "datasets/negative-of-the-negative/v2/rows/the-pile.json (and its ledgers, reading, config, build scripts)", "read": "structure field by field" } ], "cuts": [], "notes": "equal case; KO 53 sentences, 63 of 63 field and 63 of 63 archive claims cited; P body 340 words" }, "composition_v09": { "source": "this row (composed directly under the brief rebuild/negative-of-the-negative/v010/BRIEF-NEW-ROWS-3I-ATLAS.md)", "composer": "Claude (Opus 5.5), subagent, 2026-11-06", "spec": "EA-NEGONT-02 v0.10 (#1726)", "defining_material_read": [ { "what": "the specification v0.10", "file": "data/texts/AXN-0B79-text.md", "read": "whole" }, { "what": "the briefs", "file": "rebuild/negative-of-the-negative/v010/BRIEF-NEW-ROWS-3I-ATLAS.md, BRIEF-NEW-ROW-LAYER.md; v09/BRIEF-NEW-ROW-AGGREGATOR.md, -LABOR.md, -LEFT.md", "read": "whole" }, { "what": "the captures", "file": "data/EA-WG-CAPTURES-01.json entries[slug == ata-3i-atlas-technosignature-search-paper-aio-20261106], [slug == 3i-atlas-ata-drift-rate-filter-aio-20261104]", "read": "whole (transcripts read for T and the delta only)" }, { "what": "field texts", "file": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B1–B9", "read": "whole (B2 the journal text at the abstract, §1–§6 and the figure captions; B8 at §3.2, the abstract and Figure 4; B9 at its sections and by string)" }, { "what": "#1742 What the Filters Kept", "file": "data/texts/AXN-0C17-text.md", "read": "§0–§2, §5, §6, §8–§13 whole; §3, §4, §7 by their headings" }, { "what": "#1743 A Firm No", "file": "data/texts/AXN-0C1C-text.md", "read": "whole" }, { "what": "the sophistry measure, first run", "file": "rebuild/3i-atlas-signal-search/claude/run-2026-11-03/sophistry/FINDINGS-sophistry.md", "read": "whole at S4, S6, S7 and the closing sections" }, { "what": "#1450, #1727, #454", "file": "data/texts/AXN-05DB-text.md, AXN-0BDC-text.md, AXN-010F-text.md", "read": "#1450 §2.1–§2.3, §3.2; #1727 §2.1; #454 by string for the search (no locus)" }, { "what": "the exemplar row", "file": "datasets/negative-of-the-negative/v2/rows/the-pile.json (and its ledgers, reading, config, build scripts)", "read": "structure field by field" } ], "cuts": [], "notes": "equal case; KO 53 sentences, 63 of 63 field and 63 of 63 archive claims cited; P body 340 words" }, "field_by_origin": { "cards": [ "B1", "B2", "B3", "B4", "B5", "B6", "B7" ], "own_pages": [ "B8" ], "own_pages_note": "the entity's own pages: the arXiv abstract page is card 1 (B1) and the journal text card 2 (B2), each carried once, as a card, in B_D; the arXiv v2 full text (HTML and PDF, B8) is not on T's rail and stands in B_R. 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Its sentences 'While no technosignatures were found, the study sets new constraints reinforcing that 3I/ATLAS is a natural object.' and 'The observations place upper limits on the power of any radio transmitter on or near 3I/ATLAS ...' are the SETI Institute's statement, which Space attributes to 'SETI Institute officials' (B7) and the Phys.org snippet also carries (B3).", "searches": [ "WebSearch 'Sci.News \"Astronomers Scan Interstellar Object 3I/ATLAS for Alien Radio Signals\"'" ], "surfaced_by_T": [ { "slug": "ata-3i-atlas-technosignature-search-paper-aio-20261106", "card": 6 } ], "card_title": "Astronomers Scan Interstellar Object 3I/ATLAS for Alien Radio Signals | Sci.News", "card_snippet": "Object: 3I/ATLAS (third confirmed interstellar object, discovered July 1, 2025 by ATLAS facility in Chile, perihelion October 29, 2025, exhibits natural cometar..." }, { "id": "B7", "origin": "card", "pool": "B_D", "role": "Overview card 7 (press)", "card": "Space — Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty | Space", "url": "https://www.space.com/space-exploration/search-for-life/not-an-alien-spacecraft-hunt-for-technosignatures-around-interstellar-comet-3i-atlas-comes-up-empty", "kind": "Overview card (Space.com article by Michael Wall, published 2026-06-04 by its metadata)", "files": { "B7.html": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B7.html", "sha256": "fd0141498b7b454fd795cdbd432cb72bf9e277ad0fd53ed6539ad6c2535b8ad9" }, "B7.txt": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B7.txt", "sha256": "c915a563e6bcaebcfc6fb6043d2d50a93600123ba0d96254693d33398f885da1" } }, "fetched": { "at": "2026-11-06T15:23:42Z", "http": 200, "url": "https://www.space.com/space-exploration/search-for-life/not-an-alien-spacecraft-hunt-for-technosignatures-around-interstellar-comet-3i-atlas-comes-up-empty", "agent": "Mozilla/5.0 (compatible; alexanarch-non)", "raw": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B7.html", "raw_sha256": "fd0141498b7b454fd795cdbd432cb72bf9e277ad0fd53ed6539ad6c2535b8ad9", "text": [ "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B7.txt" ] }, "names_operator": "yes ('lead author Sofia Sheikh, who's based at the SETI (Search for Extraterrestrial Intelligence) Institute'; 'study co-author Valeria Garcia Lopez')", "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, EA-WG-CAPTURES-01 in the saved text, card title or snippet)", "note": "URL found by WebSearch on the card's title (the result's tracking parameter dropped). The snippet is a card-renderer summary.", "searches": [ "WebSearch 'space.com \"Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty\"'" ], "surfaced_by_T": [ { "slug": "ata-3i-atlas-technosignature-search-paper-aio-20261106", "card": 7 } ], "card_title": "Interstellar comet 3I/ATLAS is not an alien spacecraft: SETI hunt for 'technosignatures' comes up empty | Space", "card_snippet": "Object: Interstellar comet 3I/ATLAS (third confirmed interstellar object after 1I/'Oumuamua and 2I/Borisov; discovered July 1, 2025, by ATLAS project). Search: ..." }, { "id": "B8", "origin": "own_page", "pool": "B_R", "role": "the entity's own text on arXiv, v2 (the accepted manuscript), as HTML and PDF; not surfaced by T, whose card 1 is the abstract page and card 2 the journal text; the version #1742 and the sophistry run quote", "card": "arXiv — A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array (v2 full text, HTML and PDF)", "url": "https://arxiv.org/html/2512.18142v2", "kind": "the paper's full text, arXiv:2512.18142v2 (HTML (experimental) and PDF)", "files": { "B8.html": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8.html", "sha256": "cca25bb402e51aa7ee0c34d6c8e41bfea8b67260422fe1021903cf11871c80e9" }, "B8.txt": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8.txt", "sha256": "53fb69e4a124f063af6801db3b7ceee4ad94c893533ab104684ba830439c7cfa" }, "B8.pdf": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8.pdf", "sha256": "cbee54ee4218b02ba05b1c066d563b025c102d880c381d8364886c4bdce3f3f6" }, "B8-pdf-raw.txt": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-pdf-raw.txt", "sha256": "66c2c0142951b3dc07c081fc0cccf2ca37422b004c72d37d5de95c6d7b24dc56" }, "B8-pdf.txt": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-pdf.txt", "sha256": "3a2751bb5dfe158f726ce526640f040b8941370e0382788a8503f244001162e3" }, "B8-fig4-D3.png": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-fig4-D3.png", "sha256": "2b79f6d4c124e708580819c46dd9f7ea044e11e8addb85032b14bfa3569ac177" } }, "fetched": { "at": "2026-11-06T15:22:15Z", "http": 200, "url": "https://arxiv.org/html/2512.18142v2", "agent": "Mozilla/5.0 (compatible; alexanarch-non)", "raw": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8.html", "raw_sha256": "cca25bb402e51aa7ee0c34d6c8e41bfea8b67260422fe1021903cf11871c80e9", "text": [ "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8.txt", "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-pdf-raw.txt" ], "pdf": { "url": "https://arxiv.org/pdf/2512.18142v2", "at": "2026-11-06T15:23:42Z", "http": 200, "file": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8.pdf", "sha256": "cbee54ee4218b02ba05b1c066d563b025c102d880c381d8364886c4bdce3f3f6", "text": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-pdf-raw.txt (pdftotext), datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-pdf.txt (pdftotext -layout)" }, "figure4": { "url": "https://arxiv.org/html/2512.18142v2/D3.png", "at": "2026-11-06T15:24:37Z", "http": 200, "file": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B8-fig4-D3.png", "sha256": "2b79f6d4c124e708580819c46dd9f7ea044e11e8addb85032b14bfa3569ac177" } }, "names_operator": "yes (the authors; the SETI Institute)", "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, EA-WG-CAPTURES-01 in the saved text, card title or snippet)", "note": "One work with B1 and B2 (§3.6): its claims are instances of the journal's lineages, kept where its wording differs (the drift interval as '0.05–1.5 Hz/s' in the PDF and '0.05--1.5 Hz/s' in the HTML, against the journal's '0.05 and 1.5 Hz s−1'). A reference source (§0.3): it shows nothing of what T had before it.", "surfaced_by_T": [] }, { "id": "B9", "origin": "wikipedia", "pool": "B_R", "role": "the Wikipedia article '3I/ATLAS' (the brief's 'at its SETI section'); the article has no SETI section and does not mention the ATA search or any radio search; its section 'Alien spacecraft speculation' is the nearest", "card": "Wikipedia — 3I/ATLAS (the article; no section on the radio searches)", "url": "https://en.wikipedia.org/wiki/3I/ATLAS", "kind": "the Wikipedia article on the object (last edited 30 October 2026, revision 1382776879)", "files": { "B9.html": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B9.html", "sha256": "d825d374456d3e345f055f0e82d6f010072d247453723f700a7b24b69907eb04" }, "B9.txt": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B9.txt", "sha256": "34864e27820be7d5e209686601b91fdf49cdc02431f9aaf08f3995d27ea6a07c" }, "B9.wiki": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B9.wiki", "sha256": "7c89cc6307ef7cab617ef414526d930e4bed16d81ceab1c9656ad2ece6c203c0" }, "tries/wp-ata.wiki": { "path": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/tries/wp-ata.wiki", "sha256": "c0794ff219eb48c73a5bc4a0a219e1095f094e37f96951ea16bce3b25110fa3b" } }, "fetched": { "at": "2026-11-06T15:22:15Z", "http": 200, "url": "https://en.wikipedia.org/wiki/3I/ATLAS", "agent": "Mozilla/5.0 (compatible; alexanarch-non)", "raw": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B9.html", "raw_sha256": "d825d374456d3e345f055f0e82d6f010072d247453723f700a7b24b69907eb04", "text": [ "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B9.txt", "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/B9.wiki" ], "wikitext": { "url": "https://en.wikipedia.org/w/index.php?title=3I/ATLAS&action=raw", "at": "2026-11-06T15:22:15Z", "http": 200, "sha256": "7c89cc6307ef7cab617ef414526d930e4bed16d81ceab1c9656ad2ece6c203c0" }, "neighbour_checked": { "url": "https://en.wikipedia.org/w/index.php?title=Allen_Telescope_Array&action=raw", "at": "2026-11-06T15:25:00Z", "http": 200, "file": "datasets/negative-of-the-negative/v2/intake/ata-3i-atlas-search-20261106/tries/wp-ata.wiki", "sha256": "c0794ff219eb48c73a5bc4a0a219e1095f094e37f96951ea16bce3b25110fa3b", "finding": "the article 'Allen Telescope Array' names 'Oumuamua (2017) and does not mention 3I/ATLAS" } }, "names_operator": "no (the search and its authors are absent from the article)", "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, EA-WG-CAPTURES-01 in the saved text, card title or snippet)", "note": "No article on the paper exists. The article '3I/ATLAS' carries the string 'radio' nowhere in its wikitext (0 matches), and none of 'Allen Telescope', 'technosignature', 'Breakthrough'; its section 'Alien spacecraft speculation' gives Loeb's July 2025 paper and its criticism. The absence is a fact of the row (§3.1(a)).", "surfaced_by_T": [] } ] }, "derivatives": { "kernel": { "status": "composer-written", "derived_from": "the current composition, written by its composer under the brief", "note": "§8.2 derives the kernel mechanically from the frozen plan; this one was written by the composer, mechanical derivation pending." }, "delta": { "status": "current", "derived_from": "the current composition" } } }