{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:52XKIZLJXJVFHCCRTT7CMVDZD6","short_pith_number":"pith:52XKIZLJ","schema_version":"1.0","canonical_sha256":"eeaea46569ba6a5388519cfe2654791fa4753a2829635a04203d5b8cca9da2e9","source":{"kind":"arxiv","id":"astro-ph/0701736","version":1},"attestation_state":"computed","paper":{"title":"The nature of the X-Ray Flash of August 24 2005","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. de Ugarte Postigo, A. J. Castro-Tirado, A. Levan, A. O. Jaunsen, A. Pozanenko, B. L. Jensen, C. C. Thoene, C. Feron, D. A. Kann, D. Watson, D. Xu, J.E. Ovaldsen, J. Gorosabel, J. Hjorth, J. P. Halpern, J. P. U. Fynbo, J. Sollerman, M. Ibrahimov, M. Jelinek, M. Stritzinger, N. Mirabal, N. Tanvir, P. Jakobsson, S. Guziy, S. P. Jaervinen, V. Rumyantsev","submitted_at":"2007-01-25T18:36:53Z","abstract_excerpt":"We present comprehensive photometric R-band observations of the fading optical afterglow of the X-Ray Flash XRF050824, from 11 minutes to 104 days after the burst. The R-band lightcurve of the afterglow resembles the lightcurves of long duration Gamma-Ray Bursts (GRBs), i.e., a power-law albeit with a rather shallow slope of alpha=0.6. Our late R-band images reveal the host galaxy with a rest-frame B-band luminosity corresponding to roughly 0.5 Lstar. The star-formation rate as determined from the [O II] emission line luminosity is about 1.8 Msun per year. When accounting for the host contribu"},"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":"astro-ph/0701736","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-25T18:36:53Z","cross_cats_sorted":[],"title_canon_sha256":"5e3685b35fc14a748d246eddf338fe0c10587b35641d78437c0fb66adb379484","abstract_canon_sha256":"4425f36c66f3caf08b4776c4d6b9e2ccae635b8166233d20f1988ddf8a4a880d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:16:32.353743Z","signature_b64":"jFhDD/bVVdnNT7zsKfP7OMdsEiied6W/oLIQU5K+12EuerzsioEJtWo1N9hybY5h5tQmzbyH5PkoTDHcgtzpAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eeaea46569ba6a5388519cfe2654791fa4753a2829635a04203d5b8cca9da2e9","last_reissued_at":"2026-07-04T15:16:32.353281Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:16:32.353281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The nature of the X-Ray Flash of August 24 2005","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. de Ugarte Postigo, A. J. Castro-Tirado, A. Levan, A. O. Jaunsen, A. Pozanenko, B. L. Jensen, C. C. Thoene, C. Feron, D. A. Kann, D. Watson, D. Xu, J.E. Ovaldsen, J. Gorosabel, J. Hjorth, J. P. Halpern, J. P. U. Fynbo, J. Sollerman, M. Ibrahimov, M. Jelinek, M. Stritzinger, N. Mirabal, N. Tanvir, P. Jakobsson, S. Guziy, S. P. Jaervinen, V. Rumyantsev","submitted_at":"2007-01-25T18:36:53Z","abstract_excerpt":"We present comprehensive photometric R-band observations of the fading optical afterglow of the X-Ray Flash XRF050824, from 11 minutes to 104 days after the burst. The R-band lightcurve of the afterglow resembles the lightcurves of long duration Gamma-Ray Bursts (GRBs), i.e., a power-law albeit with a rather shallow slope of alpha=0.6. Our late R-band images reveal the host galaxy with a rest-frame B-band luminosity corresponding to roughly 0.5 Lstar. The star-formation rate as determined from the [O II] emission line luminosity is about 1.8 Msun per year. When accounting for the host contribu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0701736","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/astro-ph/0701736/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":"astro-ph/0701736","created_at":"2026-07-04T15:16:32.353359+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0701736v1","created_at":"2026-07-04T15:16:32.353359+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0701736","created_at":"2026-07-04T15:16:32.353359+00:00"},{"alias_kind":"pith_short_12","alias_value":"52XKIZLJXJVF","created_at":"2026-07-04T15:16:32.353359+00:00"},{"alias_kind":"pith_short_16","alias_value":"52XKIZLJXJVFHCCR","created_at":"2026-07-04T15:16:32.353359+00:00"},{"alias_kind":"pith_short_8","alias_value":"52XKIZLJ","created_at":"2026-07-04T15:16:32.353359+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/52XKIZLJXJVFHCCRTT7CMVDZD6","json":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6.json","graph_json":"https://pith.science/api/pith-number/52XKIZLJXJVFHCCRTT7CMVDZD6/graph.json","events_json":"https://pith.science/api/pith-number/52XKIZLJXJVFHCCRTT7CMVDZD6/events.json","paper":"https://pith.science/paper/52XKIZLJ"},"agent_actions":{"view_html":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6","download_json":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6.json","view_paper":"https://pith.science/paper/52XKIZLJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0701736&json=true","fetch_graph":"https://pith.science/api/pith-number/52XKIZLJXJVFHCCRTT7CMVDZD6/graph.json","fetch_events":"https://pith.science/api/pith-number/52XKIZLJXJVFHCCRTT7CMVDZD6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6/action/storage_attestation","attest_author":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6/action/author_attestation","sign_citation":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6/action/citation_signature","submit_replication":"https://pith.science/pith/52XKIZLJXJVFHCCRTT7CMVDZD6/action/replication_record"}},"created_at":"2026-07-04T15:16:32.353359+00:00","updated_at":"2026-07-04T15:16:32.353359+00:00"}