{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:72L7BGU4DWPRI7MPBOMJYTQMK2","short_pith_number":"pith:72L7BGU4","schema_version":"1.0","canonical_sha256":"fe97f09a9c1d9f147d8f0b989c4e0c56aea74ad128c4a307877dc4ff841ae4ac","source":{"kind":"arxiv","id":"1311.1943","version":1},"attestation_state":"computed","paper":{"title":"Spectropolarimetric study of the classical Cepheid $\\eta$ Aql: pulsation and magnetic field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D.Baklanova, S.Plachinda, V.Butkovskaya, V.Butkovskyi","submitted_at":"2013-11-08T11:54:11Z","abstract_excerpt":"We report the results of spectropolarimetric study of the classical Cepheid $\\eta$ Aql. We found that the longitudinal magnetic field of $\\eta$ Aql sinusoidally varies with the radial pulsation period, while the amplitude $B$, mean field $B_0$, and phases of maximum and minimum field change from year to year. We hypothesize that possible reasons of those variations are stellar axial rotation or dynamo mechanisms."},"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":"1311.1943","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-11-08T11:54:11Z","cross_cats_sorted":[],"title_canon_sha256":"991e396c07609d0d8a6fd357c5e93a40984c3fce02637d96b5beead3c9e1b935","abstract_canon_sha256":"e8694e65eb3cf98335175d7737adc227e36b0442f677e3c92154dfdb32f25884"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:32.950169Z","signature_b64":"4ChF6Fh+KEvj7kSm4c2ZpUpiMzKBbo5S6HBQqEwGMFya/6SRViVwUJ75zEY0k4IQ/pK70BJDeSL9K+Qs6eIJBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe97f09a9c1d9f147d8f0b989c4e0c56aea74ad128c4a307877dc4ff841ae4ac","last_reissued_at":"2026-05-18T01:46:32.949753Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:32.949753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectropolarimetric study of the classical Cepheid $\\eta$ Aql: pulsation and magnetic field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D.Baklanova, S.Plachinda, V.Butkovskaya, V.Butkovskyi","submitted_at":"2013-11-08T11:54:11Z","abstract_excerpt":"We report the results of spectropolarimetric study of the classical Cepheid $\\eta$ Aql. We found that the longitudinal magnetic field of $\\eta$ Aql sinusoidally varies with the radial pulsation period, while the amplitude $B$, mean field $B_0$, and phases of maximum and minimum field change from year to year. We hypothesize that possible reasons of those variations are stellar axial rotation or dynamo mechanisms."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1943","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":"1311.1943","created_at":"2026-05-18T01:46:32.949818+00:00"},{"alias_kind":"arxiv_version","alias_value":"1311.1943v1","created_at":"2026-05-18T01:46:32.949818+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1943","created_at":"2026-05-18T01:46:32.949818+00:00"},{"alias_kind":"pith_short_12","alias_value":"72L7BGU4DWPR","created_at":"2026-05-18T12:27:36.564083+00:00"},{"alias_kind":"pith_short_16","alias_value":"72L7BGU4DWPRI7MP","created_at":"2026-05-18T12:27:36.564083+00:00"},{"alias_kind":"pith_short_8","alias_value":"72L7BGU4","created_at":"2026-05-18T12:27:36.564083+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/72L7BGU4DWPRI7MPBOMJYTQMK2","json":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2.json","graph_json":"https://pith.science/api/pith-number/72L7BGU4DWPRI7MPBOMJYTQMK2/graph.json","events_json":"https://pith.science/api/pith-number/72L7BGU4DWPRI7MPBOMJYTQMK2/events.json","paper":"https://pith.science/paper/72L7BGU4"},"agent_actions":{"view_html":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2","download_json":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2.json","view_paper":"https://pith.science/paper/72L7BGU4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1311.1943&json=true","fetch_graph":"https://pith.science/api/pith-number/72L7BGU4DWPRI7MPBOMJYTQMK2/graph.json","fetch_events":"https://pith.science/api/pith-number/72L7BGU4DWPRI7MPBOMJYTQMK2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2/action/storage_attestation","attest_author":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2/action/author_attestation","sign_citation":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2/action/citation_signature","submit_replication":"https://pith.science/pith/72L7BGU4DWPRI7MPBOMJYTQMK2/action/replication_record"}},"created_at":"2026-05-18T01:46:32.949818+00:00","updated_at":"2026-05-18T01:46:32.949818+00:00"}