{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:G5AQYEL44BDF2Q2QAS3A3UYO4P","short_pith_number":"pith:G5AQYEL4","schema_version":"1.0","canonical_sha256":"37410c117ce0465d435004b60dd30ee3e7f3a720337e96405a2d6d956eff6a99","source":{"kind":"arxiv","id":"2301.03959","version":1},"attestation_state":"computed","paper":{"title":"Discovery of magnetic fields in five DC white dwarfs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrei V. Berdyugin, John D. Landstreet, Stefano Bagnulo, Svetlana V. Berdyugina, Vilppu Piirola","submitted_at":"2023-01-10T13:34:11Z","abstract_excerpt":"About half of white dwarfs (WDs) evolve to the DC state as they cool; the others become DQ or (temporarily?) DZ WDs. The recent magnetic survey of the local 20 pc volume has established a high frequency of magnetic fields among WDs older than 2-3 Gyr, demonstrating that in low- and average-mass WDs, the effects of magnetism become more common as they age, and the fields on average become stronger. However, the available statistics of WDs older than about 5 Gyr do not clearly establish how fields evolve beyond this age. We are carrying out a survey to clarify the occurrence of magnetism in DC-t"},"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":"2301.03959","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-10T13:34:11Z","cross_cats_sorted":[],"title_canon_sha256":"3ccc16a9b8a45f7e12b79196a6ec1e447ce777078d72ea0b8e8e512405ba4c34","abstract_canon_sha256":"82aff206e602c53147134a049b82799f8ddb872d21e32a6c4980bb867c53ae78"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:39:30.203008Z","signature_b64":"sT89BXOHNN+Wm3b3LUErXxjnV/PJxlNxmUZYaaOWAI6JmBmiSAIw0NjfIrj1SkRRtzc09ajO9Ey+ve0/mCwYAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37410c117ce0465d435004b60dd30ee3e7f3a720337e96405a2d6d956eff6a99","last_reissued_at":"2026-07-05T05:39:30.202462Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:39:30.202462Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discovery of magnetic fields in five DC white dwarfs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrei V. Berdyugin, John D. Landstreet, Stefano Bagnulo, Svetlana V. Berdyugina, Vilppu Piirola","submitted_at":"2023-01-10T13:34:11Z","abstract_excerpt":"About half of white dwarfs (WDs) evolve to the DC state as they cool; the others become DQ or (temporarily?) DZ WDs. The recent magnetic survey of the local 20 pc volume has established a high frequency of magnetic fields among WDs older than 2-3 Gyr, demonstrating that in low- and average-mass WDs, the effects of magnetism become more common as they age, and the fields on average become stronger. However, the available statistics of WDs older than about 5 Gyr do not clearly establish how fields evolve beyond this age. We are carrying out a survey to clarify the occurrence of magnetism in DC-t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.03959","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/2301.03959/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":"2301.03959","created_at":"2026-07-05T05:39:30.202532+00:00"},{"alias_kind":"arxiv_version","alias_value":"2301.03959v1","created_at":"2026-07-05T05:39:30.202532+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.03959","created_at":"2026-07-05T05:39:30.202532+00:00"},{"alias_kind":"pith_short_12","alias_value":"G5AQYEL44BDF","created_at":"2026-07-05T05:39:30.202532+00:00"},{"alias_kind":"pith_short_16","alias_value":"G5AQYEL44BDF2Q2Q","created_at":"2026-07-05T05:39:30.202532+00:00"},{"alias_kind":"pith_short_8","alias_value":"G5AQYEL4","created_at":"2026-07-05T05:39:30.202532+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.06357","citing_title":"White dwarfs within 13 pc: Insights from ultraviolet spectroscopy","ref_index":73,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P","json":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P.json","graph_json":"https://pith.science/api/pith-number/G5AQYEL44BDF2Q2QAS3A3UYO4P/graph.json","events_json":"https://pith.science/api/pith-number/G5AQYEL44BDF2Q2QAS3A3UYO4P/events.json","paper":"https://pith.science/paper/G5AQYEL4"},"agent_actions":{"view_html":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P","download_json":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P.json","view_paper":"https://pith.science/paper/G5AQYEL4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2301.03959&json=true","fetch_graph":"https://pith.science/api/pith-number/G5AQYEL44BDF2Q2QAS3A3UYO4P/graph.json","fetch_events":"https://pith.science/api/pith-number/G5AQYEL44BDF2Q2QAS3A3UYO4P/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P/action/storage_attestation","attest_author":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P/action/author_attestation","sign_citation":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P/action/citation_signature","submit_replication":"https://pith.science/pith/G5AQYEL44BDF2Q2QAS3A3UYO4P/action/replication_record"}},"created_at":"2026-07-05T05:39:30.202532+00:00","updated_at":"2026-07-05T05:39:30.202532+00:00"}