{"apiVersion":"1","version":"sha256:faade27e0b75b2aca6311142ff65347b4dacc153e8d28cbdf0e8a237319331f9","data":{"id":"S7715","title":"Natural and Artificial Spectral Edges in Exoplanets","authors":["Manasvi Lingam","Abraham Loeb"],"publishedDate":"2017-05-25","format":"Paper","url":"https://arxiv.org/abs/1702.05500","summary":"Lingam and Loeb propose spectral edges from hypothetical extensive photovoltaic surfaces as possible technosignatures. Contrast and power estimates depend on assumed coverage, reflectivity and geometry. Vegetation, minerals, clouds and ordinary heat transport remain alternatives. The figures combine cited reflectance curves and a schematic orbital scenario. The paper reports no detected extraterrestrial arrays. Historical instrument forecasts, manuscript comments and work-level Starshot support are qualified separately.","subjects":["Optical technosignature proposals","Natural spectral alternatives"],"people":["Avi Loeb"],"review":{"label":"All five supplied preprint pages and native layouts; conditional proposal and original gaps","scope":"A specialist actually read all 26,003 normalized characters and viewed all five native PDF layouts of arXiv:1702.05500v2, including equations 1–3, both figures, acknowledgements and 47 references. Root reviewed the complete frozen analytical report and evidence and verified its inventory; root primary-body reading is false. The revision is dated 25 May 2017 while the native header says 26 May; placeholder journal pagination is preserved without treating it as the final journal version.","gaps":["No extraterrestrial surface, civilization census or successful observing performance is reported. Coverage-reflectivity degeneracy, viewing geometry, clouds, natural mineral or vegetation edges and ordinary atmospheric/oceanic heat redistribution remain material alternatives.","Figure 1 adopts cited material-reflectance sources; Figure 2 is schematic. Those source datasets, raw data, code and independent replication were not received. The cited Loeb–Turner paper retains its existing source family without duplicate reading credit.","Acknowledged manuscript comments and assistance do not establish extraterrestrial contact or government approaches. Underlying correspondence, reviewer material and original cited works remain unread.","Support is attributed to the Breakthrough Prize Foundation for the Starshot Initiative at work level. No award identifier, amount, support dates or individual recipient is supplied; this is not federal tasking, programme access or custody proof.","Final journal-version collation, modern instrument outcomes and exhaustive glyph assurance remain unresolved. A page-three technical URL extends beyond the native edge and its missing tail is unknown."]},"familyId":"ARXIV-1702-05500-V2","citationUrl":"https://bioparity.io/sources/S7715","citation":"Manasvi Lingam, Abraham Loeb. Natural and Artificial Spectral Edges in Exoplanets. May 25, 2017. BioParity S7715. https://bioparity.io/sources/S7715"}}