Paper · S7720
Detecting Interstellar Objects Through Stellar Occultations
Siraj and Loeb propose stellar occultations as a way to find conventional interstellar objects. An idealized all-sky forecast of about one annual event depends on population, size, noise and observing assumptions. Bound Kuiper-belt and Oort-cloud populations are ordinary alternatives, with overlapping timescales. Metadata, citation, figure, axis and model discrepancies remain unresolved. This supplied preprint reports forecasts rather than detections; work-level grant support does not establish government access.
Read the paper at arxiv.orgWhat we checked
A specialist actually read all six supplied arXiv:2001.02681v2 pages, 13,567 normalized characters, and viewed six native layouts, equations 1–8, five figures including four Figure 1 panels, all four Table 1 rows and 42 bibliography entries. Root reviewed the complete frozen final analytical report/evidence and independently verified its inventory; root primary-body reading is false. Metadata says five pages and four figures; the received rendition has six and five. Submission is 8 January 2020, revision 11 February and native draft 12 February; an earlier bibliography’s 2019 date remains uncollated.
Received written text and native layouts; originals and interpretation gaps
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- The idealized continuous all-sky survey and approximate annual yield are proposals, not received observations or a current survey audit. Single-object density, extrapolated sizes, stellar proxies, detection selection, weather, duty cycle, noise and false-positive effects remain uncertain. No implemented search or model replication is claimed.
- Ordinary bound Kuiper-belt and Oort-cloud objects remain competing explanations. Simulated interstellar and Kuiper-belt crossing-time distributions overlap; duration alone does not uniquely classify an event or prove composition, origin or an artifact. Suggested pointing and multicolour measurements were not tested in this lane.
- The tentative meteor claim cites a label inconsistent with the reference list. Prose points to Figure 4 for a magnitude curve actually in Figure 3. Native rate-axis scaling does not readily reconcile with the prose rate. Table-caption minimum/maximum wording, stellar-distance symbols, diameter versus collecting area and size-power-law differences remain unresolved without silent correction.
- All five plots and the table are modeled outputs sharing inputs, not independent discoveries. Piecewise-integral implementation, selection rules, sample sizes, seeds, raw lightcurves, catalogues, orbital errors, code and numerical validation were not supplied. Simple order-of-magnitude arithmetic is not simulation or axis validation.
- Partial Breakthrough Prize Foundation support is attributed to the work; individual recipient, award ID, amount, date and Starshot earmark are unstated. No private approach or government-contact episode is reported. Final journal/v1/reviewer collation, all 42 cited original bodies, current instruments/census and physical-original glyph assurance remain gaps.
Cite this record
Amir Siraj, Abraham Loeb. Detecting Interstellar Objects Through Stellar Occultations. January 8, 2020. BioParity S7720. https://bioparity.io/sources/S7720Record data (JSON)