{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:S6XFHVQERSFHSU2ZPR7F7MTQFO","short_pith_number":"pith:S6XFHVQE","schema_version":"1.0","canonical_sha256":"97ae53d6048c8a7953597c7e5fb2702b92d118123c52a7861f1ae78720b2afc9","source":{"kind":"arxiv","id":"1901.07269","version":1},"attestation_state":"computed","paper":{"title":"Long-term evolutions of the cyclotron line energies in Her X-1, Vela X-1 and Cen X-3 as observed with Swift/BAT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Andrea Santangelo, Long Ji, Lorenzo Ducci, Ruediger Staubert, Shu Zhang, Zhi Chang","submitted_at":"2019-01-22T11:34:07Z","abstract_excerpt":"We study the long-term evolution of the centroid energy of cyclotron lines - often referered to as Cyclotron Resonance Scattering Features (CRSF) - in Her X-1, Vela X-1 and Cen X-3, using survey observations of the Burst Alert Telescope (BAT) onboard Swift. We find a significant decrease of the fundamental CRSF energy in Her X-1 and the first harmonic line energy in Vela X-1, since the launch of Swift in 2004 and until 2010 and 2012, respectively.In both sources the decreases stopped at some time, with a quite stable centroid energy thereafter. Unlike in Her X-1 and Vela X-1, the CRSF energy i"},"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":"1901.07269","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-22T11:34:07Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"f2b21f9b0cd44cc07ab149d70f5af7a6609c2b631a26d0837731c2f1e938e5f8","abstract_canon_sha256":"8c77ccc968016dd140105d5f5ac3887eb64160816da19a66c3d991821469d8e3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:10.210543Z","signature_b64":"RfCJ1inaqdrM2QM8M8CK1x963wfTeLC9E7SygyQiHHQWDIZ51KksxCUEJ260p4tUIX+3k2YYJ+rjIZ+2Sp0/Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"97ae53d6048c8a7953597c7e5fb2702b92d118123c52a7861f1ae78720b2afc9","last_reissued_at":"2026-05-17T23:55:10.210153Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:10.210153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Long-term evolutions of the cyclotron line energies in Her X-1, Vela X-1 and Cen X-3 as observed with Swift/BAT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Andrea Santangelo, Long Ji, Lorenzo Ducci, Ruediger Staubert, Shu Zhang, Zhi Chang","submitted_at":"2019-01-22T11:34:07Z","abstract_excerpt":"We study the long-term evolution of the centroid energy of cyclotron lines - often referered to as Cyclotron Resonance Scattering Features (CRSF) - in Her X-1, Vela X-1 and Cen X-3, using survey observations of the Burst Alert Telescope (BAT) onboard Swift. We find a significant decrease of the fundamental CRSF energy in Her X-1 and the first harmonic line energy in Vela X-1, since the launch of Swift in 2004 and until 2010 and 2012, respectively.In both sources the decreases stopped at some time, with a quite stable centroid energy thereafter. Unlike in Her X-1 and Vela X-1, the CRSF energy i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.07269","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":"1901.07269","created_at":"2026-05-17T23:55:10.210216+00:00"},{"alias_kind":"arxiv_version","alias_value":"1901.07269v1","created_at":"2026-05-17T23:55:10.210216+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.07269","created_at":"2026-05-17T23:55:10.210216+00:00"},{"alias_kind":"pith_short_12","alias_value":"S6XFHVQERSFH","created_at":"2026-05-18T12:33:27.125529+00:00"},{"alias_kind":"pith_short_16","alias_value":"S6XFHVQERSFHSU2Z","created_at":"2026-05-18T12:33:27.125529+00:00"},{"alias_kind":"pith_short_8","alias_value":"S6XFHVQE","created_at":"2026-05-18T12:33:27.125529+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/S6XFHVQERSFHSU2ZPR7F7MTQFO","json":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO.json","graph_json":"https://pith.science/api/pith-number/S6XFHVQERSFHSU2ZPR7F7MTQFO/graph.json","events_json":"https://pith.science/api/pith-number/S6XFHVQERSFHSU2ZPR7F7MTQFO/events.json","paper":"https://pith.science/paper/S6XFHVQE"},"agent_actions":{"view_html":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO","download_json":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO.json","view_paper":"https://pith.science/paper/S6XFHVQE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1901.07269&json=true","fetch_graph":"https://pith.science/api/pith-number/S6XFHVQERSFHSU2ZPR7F7MTQFO/graph.json","fetch_events":"https://pith.science/api/pith-number/S6XFHVQERSFHSU2ZPR7F7MTQFO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO/action/storage_attestation","attest_author":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO/action/author_attestation","sign_citation":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO/action/citation_signature","submit_replication":"https://pith.science/pith/S6XFHVQERSFHSU2ZPR7F7MTQFO/action/replication_record"}},"created_at":"2026-05-17T23:55:10.210216+00:00","updated_at":"2026-05-17T23:55:10.210216+00:00"}