{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:O3EX3VU3SSTEEXVG5YJ4YVK5Y6","short_pith_number":"pith:O3EX3VU3","schema_version":"1.0","canonical_sha256":"76c97dd69b94a6425ea6ee13cc555dc789d6c2b58e4e88893746f3d1a2632f4f","source":{"kind":"arxiv","id":"1404.0134","version":1},"attestation_state":"computed","paper":{"title":"Spectral and Timing Nature of the Symbiotic X-ray Binary 4U 1954+319: The Slowest Rotating Neutron Star in an X-ray Binary System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Diana Marcu, Felix Fuerst, Jorn Wilms, Katja Pottschmidt, Kazuo Makishima, Makoto Sasano, Robin H.D. Corbet, Shin'ya Yamada, Teruaki Enoto, Toru Tamagawa","submitted_at":"2014-04-01T05:59:13Z","abstract_excerpt":"The symbiotic X-ray binary 4U 1954+319 is a rare system hosting a peculiar neutron star (NS) and an M-type optical companion. Its ~5.4h NS spin period is the longest among all known accretion-powered pulsars and exhibited large (~7%) fluctuations over 8 years. A spin trend transition was detected with Swift/BAT around an X-ray brightening in 2012. The source was in quiescent and bright states before and after this outburst based on 60 ks Suzaku observations in 2011 and 2012. The observed continuum is well described by a Comptonized model with the addition of a narrow 6.4 keV Fe Kalpha line dur"},"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":"1404.0134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-04-01T05:59:13Z","cross_cats_sorted":[],"title_canon_sha256":"68e8fb96dc17683bb2307d17579ac6a54013828fe13407639654ee450bc21f3d","abstract_canon_sha256":"3a4bcaa5909ba1cbf4c5cddd11f7159e8444a917bf127f7204cb5f35449fa39b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:43.521683Z","signature_b64":"qQ5AW28J2X8zfCg8u8zrREmMG59DbAJD2+4UdCoaIfwNb22a6NEAw2ncB6Pm8yX+/YyZMaTiaYkN4cFY7pcUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76c97dd69b94a6425ea6ee13cc555dc789d6c2b58e4e88893746f3d1a2632f4f","last_reissued_at":"2026-05-18T01:43:43.521253Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:43.521253Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectral and Timing Nature of the Symbiotic X-ray Binary 4U 1954+319: The Slowest Rotating Neutron Star in an X-ray Binary System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Diana Marcu, Felix Fuerst, Jorn Wilms, Katja Pottschmidt, Kazuo Makishima, Makoto Sasano, Robin H.D. Corbet, Shin'ya Yamada, Teruaki Enoto, Toru Tamagawa","submitted_at":"2014-04-01T05:59:13Z","abstract_excerpt":"The symbiotic X-ray binary 4U 1954+319 is a rare system hosting a peculiar neutron star (NS) and an M-type optical companion. Its ~5.4h NS spin period is the longest among all known accretion-powered pulsars and exhibited large (~7%) fluctuations over 8 years. A spin trend transition was detected with Swift/BAT around an X-ray brightening in 2012. The source was in quiescent and bright states before and after this outburst based on 60 ks Suzaku observations in 2011 and 2012. The observed continuum is well described by a Comptonized model with the addition of a narrow 6.4 keV Fe Kalpha line dur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0134","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":"1404.0134","created_at":"2026-05-18T01:43:43.521323+00:00"},{"alias_kind":"arxiv_version","alias_value":"1404.0134v1","created_at":"2026-05-18T01:43:43.521323+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0134","created_at":"2026-05-18T01:43:43.521323+00:00"},{"alias_kind":"pith_short_12","alias_value":"O3EX3VU3SSTE","created_at":"2026-05-18T12:28:41.024544+00:00"},{"alias_kind":"pith_short_16","alias_value":"O3EX3VU3SSTEEXVG","created_at":"2026-05-18T12:28:41.024544+00:00"},{"alias_kind":"pith_short_8","alias_value":"O3EX3VU3","created_at":"2026-05-18T12:28:41.024544+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/O3EX3VU3SSTEEXVG5YJ4YVK5Y6","json":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6.json","graph_json":"https://pith.science/api/pith-number/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/graph.json","events_json":"https://pith.science/api/pith-number/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/events.json","paper":"https://pith.science/paper/O3EX3VU3"},"agent_actions":{"view_html":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6","download_json":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6.json","view_paper":"https://pith.science/paper/O3EX3VU3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1404.0134&json=true","fetch_graph":"https://pith.science/api/pith-number/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/graph.json","fetch_events":"https://pith.science/api/pith-number/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/action/storage_attestation","attest_author":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/action/author_attestation","sign_citation":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/action/citation_signature","submit_replication":"https://pith.science/pith/O3EX3VU3SSTEEXVG5YJ4YVK5Y6/action/replication_record"}},"created_at":"2026-05-18T01:43:43.521323+00:00","updated_at":"2026-05-18T01:43:43.521323+00:00"}