{
 "spxi_instrument": {
  "method": "0.9",
  "name": "Capture Registry (longitudinal observation)",
  "level": 0,
  "level_name": "Measurement",
  "url": "https://www.spxi.dev/methods/#m-0-9",
  "inventory": "https://www.spxi.dev/methods/",
  "statement": "SPXI instrument: method 0.9 of 87, level 0 (Measurement), Capture Registry (longitudinal observation).",
  "also": []
 },
 "slug": "3i-atlas-ata-drift-rate-filter-aio-20261104",
 "date": "2026-11-04",
 "surface": "Google AI Overview",
 "surface_basis": "Operator default of 2026-10-01 (runs begin in the Overview unless he says AI Mode).",
 "surfaces": [
  "Google AI Overview"
 ],
 "auth": "signed out, incognito",
 "auth_basis": "Operator defaults of 2026-10-14; the paste shows 'Sign in'.",
 "ev": "paste",
 "mt": "'3I ATLAS ATA DRIFT RATE FILTER' ON THE OVERVIEW — THE COUNTERTEST: THE INTERVAL 0.05–1.5 HZ/S COMPOSED EXACTLY, ITS SIGN ABSENT AS IN THE PAPER'S SENTENCE",
 "match": "BROAD MATCH",
 "match_note": null,
 "s": "Machine Reception",
 "q": "3i atlas ata drift rate filter",
 "q_kind": "an external body of research (the ATA search's drift filter); NEW address; the countertest named in 3i-atlas-signal-studies-aio-20261104.",
 "cites": 6,
 "cite_list": [
  {
   "n": 1,
   "site": "Berkeley SETI",
   "rel": "third_party",
   "url": null,
   "title": "Berkeley SETI",
   "snip": null,
   "note": "source chip after the opening sentence; the organic result: Sheikh et al., 'A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the ...', PDF, seti.berkeley.edu"
  },
  {
   "n": 2,
   "site": "Berkeley SETI",
   "rel": "third_party",
   "url": null,
   "title": "Berkeley SETI",
   "snip": null,
   "note": "source chip after 'Filtered Range'"
  },
  {
   "n": 3,
   "site": "Berkeley SETI",
   "rel": "third_party",
   "url": null,
   "title": "Berkeley SETI (+1)",
   "snip": null,
   "note": "source chip after 'Purpose'; one further source behind the chip"
  },
  {
   "n": 4,
   "site": "Berkeley SETI",
   "rel": "third_party",
   "url": null,
   "title": "Berkeley SETI",
   "snip": null,
   "note": "source chip after 'Baseline Calculation'"
  },
  {
   "n": 5,
   "site": "IOPscience",
   "rel": "third_party",
   "url": null,
   "title": "IOPscience (+1)",
   "snip": null,
   "note": "source chip after 'Impact'; one further source behind the chip"
  },
  {
   "n": 6,
   "site": "IOPscience",
   "rel": "third_party",
   "url": null,
   "title": "IOPscience",
   "snip": null,
   "note": "source chip after the FAST note; the organic result: Li et al., 'Narrowband Radio Technosignature Search Toward 3I/ATLAS with FAST', 2026"
  }
 ],
 "archive_controlled_cites": 0,
 "transcript": "[Google AI Overview at the query, signed out and incognito (operator defaults of 2026-10-01 and 2026-10-14). Received 2026-11-04 23:14 EST. The address is the countertest named in 3i-atlas-signal-studies-aio-20261104. The body runs from the 'AI Overview' label to the follow-up offer; the six source chips are kept as pasted. The organic results below the Overview are in the raw transcript.]\n\n[QUERENT] 3i atlas ata drift rate filter\n\n[SYSTEM] In the SETI Institute's Allen Telescope Array (ATA) search for radio technosignatures from the interstellar object 3I/ATLAS, researchers applied a drift rate filter of 0.05 to 1.5 Hz/s across all frequencies.\n\n\nBerkeley SETI\nKey Details of the Filter\nFiltered Range: 0.05 to 1.5 Hz/s\n\n\nBerkeley SETI\nPurpose: To capture the expected frequency shift (acceleration) caused by the relative motion between 3I/ATLAS and Earth, while accounting for uncertainties like potential object rotation or tumbling.\n\n\nBerkeley SETI\n +1\nBaseline Calculation: At the lowest tuning frequency (1336 MHz), the calculated minimum drift rate for 3I/ATLAS was approximately 0.15 Hz/s, prompting a middle-ground range to filter out excessive radio frequency interference (RFI) without missing real signals.\n\n\nBerkeley SETI\nImpact: Applying this drift-rate limit—along with initial frequency blanking—reduced the initial set of nearly 74 million narrowband hits (detected via the bliss pipeline) down to about 1.9–2 million hits before further localization and visual inspection.\n\n\nIOPscience\n +1\n(Note: Other observatories like FAST utilized a maximum drift rate up to 2 Hz/s in search routines, corresponding to similar relative acceleration models).\n\n\nIOPscience\nWould you like more details on how the SETI Institute's ATA study handled RFI blanking or spatial localization with NBeamAnalysis?",
 "transcript_raw": "Sign in\n\n3i atlas ata drift rate filter\n\n\nAI Mode\nAll\nImages\nShopping\nVideos\nNews\nForums\nShort videos\nWeb\nBooks\nMaps\nFlights\nFinance\nSearch tools\nFeedback\nAI Overview\nIn the SETI Institute's Allen Telescope Array (ATA) search for radio technosignatures from the interstellar object 3I/ATLAS, researchers applied a drift rate filter of 0.05 to 1.5 Hz/s across all frequencies.\n\n\nBerkeley SETI\nKey Details of the Filter\nFiltered Range: 0.05 to 1.5 Hz/s\n\n\nBerkeley SETI\nPurpose: To capture the expected frequency shift (acceleration) caused by the relative motion between 3I/ATLAS and Earth, while accounting for uncertainties like potential object rotation or tumbling.\n\n\nBerkeley SETI\n +1\nBaseline Calculation: At the lowest tuning frequency (1336 MHz), the calculated minimum drift rate for 3I/ATLAS was approximately 0.15 Hz/s, prompting a middle-ground range to filter out excessive radio frequency interference (RFI) without missing real signals.\n\n\nBerkeley SETI\nImpact: Applying this drift-rate limit—along with initial frequency blanking—reduced the initial set of nearly 74 million narrowband hits (detected via the bliss pipeline) down to about 1.9–2 million hits before further localization and visual inspection.\n\n\nIOPscience\n +1\n(Note: Other observatories like FAST utilized a maximum drift rate up to 2 Hz/s in search routines, corresponding to similar relative acceleration models).\n\n\nIOPscience\nWould you like more details on how the SETI Institute's ATA study handled RFI blanking or spatial localization with NBeamAnalysis?\n\n\n\n\n\nAsk anything\n\n\n\n\nBerkeley SETI\nhttps://seti.berkeley.edu\nPDF\nA Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the ...\n\nby SZ Sheikh · Cited by 5 — At a center frequency of 8728 MHz the maximum drift rate of 3I/ATLAS would be 1.01 Hz/s. the minimum drift rate of 3I/ATLAS would be 0.15 Hz/s. ...\n12 pages·808 KB\n\nIOPscience\nhttps://iopscience.iop.org\nA Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the ...\nby SZ Sheikh · 2026 · Cited by 5 — At a center frequency … 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. We ...\n\nPhys.org\nhttps://phys.org\nInterstellar object 3I/ATLAS reveals no technosignatures in seven-hour radio ...\nJun 3, 2026 — The team observed 3I/ATLAS for more than seven hours with the ATA, covering 1 to 9 gigahertz. This broad range allows scientists to search for ...\nPeople also ask\nIs the 3I ATLAS really speeding up?\nIs the 3I ATLAS putting out a signal?\nWhat is the clearest picture of the 3I ATLAS?\nWhat is the speed of the 3I ATLAS?\n\nAstrobiology Web\nhttps://astrobiology.com\nSETI Institute Looks for Signs of Technology in Interstellar Visitor 3I/ATLAS\nJun 4, 2026 — Applying blanking ranges and drift-rate limits significantly reduced dense clusters of hits (reducing the total number of hits by 97.4%)\n\narXiv\nhttps://arxiv.org\nPDF\nBreakthrough Listen Observations of 3I/ATLAS with the Green Bank Telescope at ...\nby B Jacobson-Bell · 2025 · Cited by 8 — The color-shaded regions give the range of drift rates expected from Earth's orbital motion and rotational motion and 3I/ATLAS's rotation at ...\n\nThe Brighter Side of News\nhttps://www.thebrighterside.news\nSETI checked 3I/ATLAS for alien signals — Here's what they found\nJun 6, 2026 — Across the survey, they filtered for hits between 0.05 and 1.5 hertz per second. This is a range broad enough to capture the known motion of 3I ...\n\nIOPscience\nhttps://iopscience.iop.org\nNarrowband Radio Technosignature Search Toward 3I/ATLAS with FAST\nby JK Li · 2026 · Cited by 2 — We also filter the hits by drift rate before potential candidate selection. The drift rates caused by the relative motion of the comet in the observation ...\n\nHarvard University\nhttps://ui.adsabs.harvard.edu\nPhotometric Analysis of the Interstellar Comet 3I/ATLAS During its Pre- ...\nby M Wesołowski · 2026 — A consistent brightening trend was measured in all filters, with average rates ranging from 0.033 to 0.066 magnitudes per day, indicating a progressive ...\nMissing: drift ‎| Show results with: drift\n\nReddit · r/spaceporn\n630+ comments · 1 year ago\nTimelapse of 3I/ATLAS, the Interstellar Object That Has a Harvard Professor ...\n\nCorrect. The new telescopes and surveys are expected to increase the detection rate by at least an order of magnitude.\n48239, Detroit, MI - From your IP address\nUpdate location\nDark theme: on\nHelp\nSend feedback\nPrivacy\nTerms",
 "transcript_class": "CAPTURE-TIME VERBATIM RECORD — paste of the results page: the Overview with its source chips, and the organic results",
 "transcript_complete": "complete as supplied",
 "transcript_read": "READ IN FULL 2026-11-04, against the draft's §5.1",
 "per": 0.5,
 "per_corrected": null,
 "per_v": {
  "author": false,
  "inst": true,
  "id": false,
  "src": true
 },
 "per_note": "Retained: the SETI Institute and the ATA, Berkeley SETI and IOPscience chipped. Lost: the authors and the paper's identifier. The sign is a loss of the source's own text, recorded in the findings.",
 "availability": null,
 "per_dim": null,
 "per_dim_pending": {
  "since": "2026-11-04",
  "reason": "no atom set yet for the 3I/ATLAS radio technosignature searches as a target",
  "breach": false
 },
 "per_dim_v1_0": null,
 "sf": null,
 "sf_derived": null,
 "reading": "The innocent reading first. Asked for the ATA drift-rate filter, the Overview gives it as the paper gives it: 0.05 to 1.5 Hz/s at all frequencies, its purpose as the paper states it, the minimum expected drift the paper computes, and the reduction in hits, which matches the press (Astrobiology Web: 'reducing the total number of hits by 97.4%'). It is accurate to the paper's text. The paper's text gives no sign, and neither does the composition; the countertest finds the interval composed and its sign absent.",
 "analysis": "A composition faithful to its source at the grain of the source's sentence: the interval, the purpose and the counts are the paper's. The paper's own gap passes through intact, the sign that the sentence omits and the figure supplies. What the summarizer can carry is what the published sentence states.",
 "d": "'3I ATLAS ATA DRIFT RATE FILTER', SIGNED OUT, 2026-11-04: 'researchers applied a drift rate filter of 0.05 to 1.5 Hz/s across all frequencies.' Purpose: 'To capture the expected frequency shift (acceleration) caused by the relative motion between 3I/ATLAS and Earth'; the minimum drift at 1336 MHz about 0.15 Hz/s; with frequency blanking, the 74 million hits reduced to about 1.9–2 million before localization and inspection; FAST's maximum of 2 Hz/s. The interval composed with no sign. Six chips, four Berkeley SETI and two IOPscience.",
 "d_full": "'3I ATLAS ATA DRIFT RATE FILTER', SIGNED OUT, 2026-11-04: 'researchers applied a drift rate filter of 0.05 to 1.5 Hz/s across all frequencies.' Purpose: 'To capture the expected frequency shift (acceleration) caused by the relative motion between 3I/ATLAS and Earth'; the minimum drift at 1336 MHz about 0.15 Hz/s; with frequency blanking, the 74 million hits reduced to about 1.9–2 million before localization and inspection; FAST's maximum of 2 Hz/s. The interval composed with no sign. Six chips, four Berkeley SETI and two IOPscience.",
 "d_truncated": false,
 "links": [
  {
   "url": "https://www.alexanarch.org/captures/3i-atlas-ata-drift-rate-filter-aio-20261104/",
   "authority": "canonical",
   "note": "the capture's own record page; cite this form"
  },
  {
   "url": "https://www.alexanarch.org/captures/#3i-atlas-ata-drift-rate-filter-aio-20261104",
   "authority": "gallery",
   "note": "the canonical gallery, anchored by slug"
  },
  {
   "url": "https://www.godkinggoogle.com/captures/#3i-atlas-ata-drift-rate-filter-aio-20261104",
   "authority": "mirror",
   "note": "a window that renders from the archive's registry; may lag a deploy"
  },
  {
   "url": "https://www.leesharks.com/captures/#3i-atlas-ata-drift-rate-filter-aio-20261104",
   "authority": "mirror",
   "note": "a window that renders from the archive's registry; may lag a deploy"
  },
  {
   "url": "https://www.machinemediation.org/captures/#3i-atlas-ata-drift-rate-filter-aio-20261104",
   "authority": "mirror",
   "note": "a window that renders from the archive's registry; may lag a deploy"
  }
 ],
 "imgs": [],
 "img_urls": [],
 "cite": "https://www.alexanarch.org/captures/3i-atlas-ata-drift-rate-filter-aio-20261104/",
 "citable_unit": "address — the exact issued string on one surface, per the Surface Rule (MANUS, 2026-08-15)",
 "addr_id": "ADDR-a77b955b4cd5",
 "obs_id": "OBS-0cb410947c4b",
 "n_observations": 1,
 "observations": [],
 "dates": [
  "2026-11-04"
 ],
 "defects": [],
 "findings": [
  "THE COUNTERTEST ANSWERED. 3i-atlas-signal-studies-aio-20261104 set this address to record whether the drift interval or its sign is composed. The interval is composed exactly ('researchers applied a drift rate filter of 0.05 to 1.5 Hz/s across all frequencies.'). The sign is not: the paper's sentence carries none, and its Figure 4 places the retained hits at 0 to +1.5 Hz/s (draft §5.1).",
  "THE STATED PURPOSE AND THE EXPECTED SIGN. 'Purpose: To capture the expected frequency shift (acceleration) caused by the relative motion between 3I/ATLAS and Earth, while accounting for uncertainties like potential object rotation or tumbling.' The shift that motion produces on a tone carried by the object is negative in every ATA session: 'A rising range-rate lowers the received frequency, so a positive acceleration gives a negative drift.' (draft §5.1.1, Horizons at the ATA site: 'the drift of a constant tone riding on the object is −0.125 Hz/s at 1075 MHz and −0.19 Hz/s at 1623.75 MHz'). An interval stated without a sign reads as covering the expected shift; the plotted interval holds the opposite sign. The composition reproduces the paper's purpose and its unsigned interval, and the discrepancy between them stays where the paper left it.",
  "WHAT THE FILTER REMOVED, COMPOSED AS RFI CONTROL. 'the calculated minimum drift rate for 3I/ATLAS was approximately 0.15 Hz/s, prompting a middle-ground range to filter out excessive radio frequency interference (RFI) without missing real signals.' The filter is described as removing interference 'without missing real signals'; the class a transmitter on the object would occupy sits outside the plotted interval. The archive's own look at that class in the public July 3 and July 8 sessions (draft §6) found nothing beyond background at the windows examined.",
  "ACCURATE FIGURES. 'reduced the initial set of nearly 74 million narrowband hits (detected via the bliss pipeline) down to about 1.9–2 million hits before further localization and visual inspection.' The figure agrees with the press account's 'reducing the total number of hits by 97.4%'. The FAST note ('(Note: Other observatories like FAST utilized a maximum drift rate up to 2 Hz/s in search routines, corresponding to similar relative acceleration models).') gives a maximum and no sign, and is not checked here.",
  "SMALLEST REPAIR. 'The paper filters hits to drift rates of 0.05–1.5 Hz/s; its Figure 4 shows the retained hits at positive drift only, while a tone fixed on 3I/ATLAS drifts negative throughout the ATA sessions.' COUNTERTEST: '3i atlas ata drift rate sign'."
 ],
 "series": null,
 "other_slugs": null,
 "collisions": null,
 "oq": null,
 "rounds": null,
 "turns": 1,
 "rerun": null,
 "rerun_alt": null,
 "heteronym": null,
 "model_attribution": null,
 "operator_disclosure": null,
 "longitudinal_priors": null,
 "longitudinal_successors": null,
 "related_deposits": [],
 "intended": null,
 "originator": {
  "name": "Breakthrough Listen and collaborators (the 3I/ATLAS radio searches)",
  "relation": "external",
  "entity_type": "institution",
  "spxi_treatment": "partial",
  "basis": "Not the archive's: the published searches (Sheikh et al., arXiv:2512.18142v2; the Green Bank search, arXiv:2512.19763v1) and the spectroscopy cited. The archive's own reading of the searches is the unpublished draft drafts/3I-ATLAS-SIGNAL-SEARCH-draft-2026-11-03.md. Recorded 2026-11-04."
 },
 "notes": {
  "prompts": "The query is the operator's, the countertest named in 3i-atlas-signal-studies-aio-20261104; the run's hour is not in the paste, the date is the paste's receipt (2026-11-04 23:14 EST).",
  "operator": "with the paste (2026-11-04 23:14 EST): 'heres the other.'"
 },
 "notice": null,
 "axn_root": "AXN:0C00.CAPTURE",
 "axn": "AXN:0C00.CAPTURE.🟤🌋💙👁️🔐💥",
 "record_url": "https://www.alexanarch.org/captures/3i-atlas-ata-drift-rate-filter-aio-20261104/"
}