{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:PXZTJQMDLBOGOKB4HL2ZXFJHIU","short_pith_number":"pith:PXZTJQMD","schema_version":"1.0","canonical_sha256":"7df334c183585c67283c3af59b95274520c77a283fcdc8037b3088293643a2a6","source":{"kind":"arxiv","id":"1005.0803","version":1},"attestation_state":"computed","paper":{"title":"Gamma-ray absorption and the origin of the gamma-ray flare in Cygnus X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Gustavo E. Romero, Mariana Orellana, Maria Victoria del Valle","submitted_at":"2010-05-05T18:10:33Z","abstract_excerpt":"The high-mass microquasar Cygnus X-1, the best-established candidate for a stellar-mass black hole in the Galaxy, has been detected in a flaring state at very high energies (VHE),  E > 200 GeV, by the Atmospheric Cherenkov Telescope MAGIC. The flare occurred at orbital phase 0.91, where phase 1 is the configuration with the black hole behind the companion high-mass star, when the absorption of gamma-ray photons by photon-photon annihilation with the stellar field is expected to be  highest. We aim to set up a model for the high-energy emission and absorption in Cyg X-1 that can explain the nat"},"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":"1005.0803","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-05-05T18:10:33Z","cross_cats_sorted":[],"title_canon_sha256":"4ed9cc530226935cd6188bab3bdf0d6da52e4e0a6126e081572046a648a482ad","abstract_canon_sha256":"517de38b2689bb99cba031df8eceff8c6fdae97d45d56019f313d15b639b5365"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:42.588888Z","signature_b64":"TFuu8VaHQRxxlYdhFGaYOXuLu5vKS7O53HH9viTUvx4bgZBBh8AEp+iQ9nAfyn+H8I5UT/K7ltf7bJWhK8xzDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7df334c183585c67283c3af59b95274520c77a283fcdc8037b3088293643a2a6","last_reissued_at":"2026-05-18T02:07:42.588083Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:42.588083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Gamma-ray absorption and the origin of the gamma-ray flare in Cygnus X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Gustavo E. Romero, Mariana Orellana, Maria Victoria del Valle","submitted_at":"2010-05-05T18:10:33Z","abstract_excerpt":"The high-mass microquasar Cygnus X-1, the best-established candidate for a stellar-mass black hole in the Galaxy, has been detected in a flaring state at very high energies (VHE),  E > 200 GeV, by the Atmospheric Cherenkov Telescope MAGIC. The flare occurred at orbital phase 0.91, where phase 1 is the configuration with the black hole behind the companion high-mass star, when the absorption of gamma-ray photons by photon-photon annihilation with the stellar field is expected to be  highest. We aim to set up a model for the high-energy emission and absorption in Cyg X-1 that can explain the nat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0803","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":""},"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":"1005.0803","created_at":"2026-05-18T02:07:42.588221+00:00"},{"alias_kind":"arxiv_version","alias_value":"1005.0803v1","created_at":"2026-05-18T02:07:42.588221+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0803","created_at":"2026-05-18T02:07:42.588221+00:00"},{"alias_kind":"pith_short_12","alias_value":"PXZTJQMDLBOG","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_16","alias_value":"PXZTJQMDLBOGOKB4","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_8","alias_value":"PXZTJQMD","created_at":"2026-05-18T12:26:12.377268+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/PXZTJQMDLBOGOKB4HL2ZXFJHIU","json":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU.json","graph_json":"https://pith.science/api/pith-number/PXZTJQMDLBOGOKB4HL2ZXFJHIU/graph.json","events_json":"https://pith.science/api/pith-number/PXZTJQMDLBOGOKB4HL2ZXFJHIU/events.json","paper":"https://pith.science/paper/PXZTJQMD"},"agent_actions":{"view_html":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU","download_json":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU.json","view_paper":"https://pith.science/paper/PXZTJQMD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1005.0803&json=true","fetch_graph":"https://pith.science/api/pith-number/PXZTJQMDLBOGOKB4HL2ZXFJHIU/graph.json","fetch_events":"https://pith.science/api/pith-number/PXZTJQMDLBOGOKB4HL2ZXFJHIU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU/action/storage_attestation","attest_author":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU/action/author_attestation","sign_citation":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU/action/citation_signature","submit_replication":"https://pith.science/pith/PXZTJQMDLBOGOKB4HL2ZXFJHIU/action/replication_record"}},"created_at":"2026-05-18T02:07:42.588221+00:00","updated_at":"2026-05-18T02:07:42.588221+00:00"}