Research Papers & Reports
Permanent research records connecting scientific methods, findings and limitations. Publication labels reflect the ingested versions.
Critical Evaluation of Studies Alleging Evidence for Technosignatures in the POSS1-E Photographic Plates
Applicable science: Photographic artifact assessment, dataset validation and statistical normalization.
Watters and colleagues examine whether historical POSS1-E plate features support reported technosignature interpretations. They report concerns involving plate and scan artifacts, known stars and the statistical treatment of observation opportunities.
Limitations: Findings apply to the datasets examined. The critique does not determine the identity of every plate feature, and VASCO researchers dispute aspects of the analysis.
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Slysh haloes: the waste heat of cold computing as a submillimetre technosignature
Applicable science: Infrared/submillimetre astronomy, thermal emission and natural-source discrimination.
Michael Garrett models hypothetical cold-computing radiators and proposes archival and targeted searches for their far-infrared or submillimetre waste heat.
Natural alternatives: Cold dust, debris, background galaxies, spectral-line sources and instrumental effects can mimic parts of the proposed signature. Candidate assessment must distinguish these possibilities.
Limitations: Detectability depends on hypothetical architecture, temperature, geometry, distance and instrument response. This is a proposed search method; no Slysh halo or extraterrestrial technology detection is reported. Journal acceptance and peer review are not established in the ingested record.
Limits on Kinematic Inference from the PURSUE Airborne Sensor Videos
Haqq-Misra and Kopparapu assess 112 public sensor videos. They explain why missing range and observer geometry limit physical-speed inference, with PR113 and PR149 illustrating different constraints. The analysis concerns redacted public data and does not identify every object.
Evidence status: Author analysis; journal acceptance and completed peer review are not established by the checked arXiv record.
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Parallax & Apparent Motion · Infrared Imaging & Interpretation
Six objects reported at 480 mph in a declassified military infrared video show brightness flicker at bird wingbeat rates
The authors measure independent brightness cycles in PR135 and compare them with animal recordings. They propose birds plus parallax as a conventional explanation. Version 4 extends the analysis to other clips. Frequency overlap is not identification; unredacted telemetry could test or refute the model.
Evidence status: Author analysis; journal acceptance and completed peer review are not established by the checked arXiv record.
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Parallax & Apparent Motion · Infrared Imaging & Interpretation