{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:LUD2SENUIUEPVYWIMXA4URCJYJ","short_pith_number":"pith:LUD2SENU","schema_version":"1.0","canonical_sha256":"5d07a911b44508fae2c865c1ca4449c276875da3200268ad8598d12d7fb9b923","source":{"kind":"arxiv","id":"2203.01960","version":1},"attestation_state":"computed","paper":{"title":"A hot and luminous source at the site of the fast transient AT2018cow at 2-3 years after its explosion","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Justyn R. Maund, Liang-Duan Liu, Ning-Chen Sun, Paul A. Crowther","submitted_at":"2022-03-03T19:00:04Z","abstract_excerpt":"We report the discovery of a luminous late-time source at the position of the fast blue optical transient (FBOT) AT2018cow on images taken by the Hubble Space Telescope (HST) at 714 d and 1136 d after its explosion. This source is detected at both UV and optical wavelengths and has prominent H$\\alpha$ emission. It has a very stable brightness between the two epochs and a very blue spectral energy distribution (SED) consistent with $f_\\lambda$ $\\propto$ $\\lambda^{-4.1 \\pm 0.1}$, i.e. the Rayleigh-Jeans tail of a hot blackbody with a very high temperature of log($T$/K) $>$ 4.6 and luminosity of "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2203.01960","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-03-03T19:00:04Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b815c6d538ba0df16ec0183b754f6631352f891817699349b62cfe393a009700","abstract_canon_sha256":"b72585e3bdecbb1875032476c845923bedb97bd75206c4105389da62d70ddeed"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:04:06.182905Z","signature_b64":"Sc+IZi4M1rluNlSRpvzzWKqibKD0bETQXF0LFC/SyGrR4HxmODf6SHbgHudkP47a7jSv3Jvmz6FM1alMQB2lCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d07a911b44508fae2c865c1ca4449c276875da3200268ad8598d12d7fb9b923","last_reissued_at":"2026-07-05T04:04:06.182463Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:04:06.182463Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A hot and luminous source at the site of the fast transient AT2018cow at 2-3 years after its explosion","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Justyn R. Maund, Liang-Duan Liu, Ning-Chen Sun, Paul A. Crowther","submitted_at":"2022-03-03T19:00:04Z","abstract_excerpt":"We report the discovery of a luminous late-time source at the position of the fast blue optical transient (FBOT) AT2018cow on images taken by the Hubble Space Telescope (HST) at 714 d and 1136 d after its explosion. This source is detected at both UV and optical wavelengths and has prominent H$\\alpha$ emission. It has a very stable brightness between the two epochs and a very blue spectral energy distribution (SED) consistent with $f_\\lambda$ $\\propto$ $\\lambda^{-4.1 \\pm 0.1}$, i.e. the Rayleigh-Jeans tail of a hot blackbody with a very high temperature of log($T$/K) $>$ 4.6 and luminosity of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.01960","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2203.01960/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2203.01960","created_at":"2026-07-05T04:04:06.182520+00:00"},{"alias_kind":"arxiv_version","alias_value":"2203.01960v1","created_at":"2026-07-05T04:04:06.182520+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.01960","created_at":"2026-07-05T04:04:06.182520+00:00"},{"alias_kind":"pith_short_12","alias_value":"LUD2SENUIUEP","created_at":"2026-07-05T04:04:06.182520+00:00"},{"alias_kind":"pith_short_16","alias_value":"LUD2SENUIUEPVYWI","created_at":"2026-07-05T04:04:06.182520+00:00"},{"alias_kind":"pith_short_8","alias_value":"LUD2SENU","created_at":"2026-07-05T04:04:06.182520+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ","json":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ.json","graph_json":"https://pith.science/api/pith-number/LUD2SENUIUEPVYWIMXA4URCJYJ/graph.json","events_json":"https://pith.science/api/pith-number/LUD2SENUIUEPVYWIMXA4URCJYJ/events.json","paper":"https://pith.science/paper/LUD2SENU"},"agent_actions":{"view_html":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ","download_json":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ.json","view_paper":"https://pith.science/paper/LUD2SENU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2203.01960&json=true","fetch_graph":"https://pith.science/api/pith-number/LUD2SENUIUEPVYWIMXA4URCJYJ/graph.json","fetch_events":"https://pith.science/api/pith-number/LUD2SENUIUEPVYWIMXA4URCJYJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ/action/storage_attestation","attest_author":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ/action/author_attestation","sign_citation":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ/action/citation_signature","submit_replication":"https://pith.science/pith/LUD2SENUIUEPVYWIMXA4URCJYJ/action/replication_record"}},"created_at":"2026-07-05T04:04:06.182520+00:00","updated_at":"2026-07-05T04:04:06.182520+00:00"}