{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:IZK7JTTCVDMTX4ZIIXJ2POTK55","short_pith_number":"pith:IZK7JTTC","schema_version":"1.0","canonical_sha256":"4655f4ce62a8d93bf32845d3a7ba6aef54d0323579bba4a57f19dab3385b4e94","source":{"kind":"arxiv","id":"0911.0502","version":1},"attestation_state":"computed","paper":{"title":"Pulsar magnetic alignment and the pulsewidth-age relation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"David G. Blair, Lee S. Chan, Matthew D. T. Young, Ron R. Burman","submitted_at":"2009-11-03T05:20:31Z","abstract_excerpt":"Using pulsewidth data for 872 isolated radio pulsars we test the hypothesis that pulsars evolve through a progressive narrowing of the emission cone combined with progressive alignment of the spin and magnetic axes. The new data provide strong evidence for the alignment over a time-scale of about 1 Myr with a log standard deviation of around 0.8 across the observed population. This time-scale is shorter than the time-scale of about 10 Myr found by previous authors, but the log standard deviation is larger. The results are inconsistent with models based on magnetic field decay alone or monotoni"},"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":"0911.0502","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-03T05:20:31Z","cross_cats_sorted":[],"title_canon_sha256":"123cb6499b6996b4d66baa7e05c4296001002f7cbe92ca502ea07ba86874af3e","abstract_canon_sha256":"ee4e7c2e5af171fd8ab4288973447968217bc73a31d1dff2356f4cfec854352c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:00.315179Z","signature_b64":"hrwRL0yc7hZNDmncTD+UlJGujbytZYv5ZoxtzwibBWTuKLhxdB/HoGPIJk0S35BIek4R2o7O5dI4avvHPLM/Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4655f4ce62a8d93bf32845d3a7ba6aef54d0323579bba4a57f19dab3385b4e94","last_reissued_at":"2026-05-18T02:11:00.314485Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:00.314485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Pulsar magnetic alignment and the pulsewidth-age relation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"David G. Blair, Lee S. Chan, Matthew D. T. Young, Ron R. Burman","submitted_at":"2009-11-03T05:20:31Z","abstract_excerpt":"Using pulsewidth data for 872 isolated radio pulsars we test the hypothesis that pulsars evolve through a progressive narrowing of the emission cone combined with progressive alignment of the spin and magnetic axes. The new data provide strong evidence for the alignment over a time-scale of about 1 Myr with a log standard deviation of around 0.8 across the observed population. This time-scale is shorter than the time-scale of about 10 Myr found by previous authors, but the log standard deviation is larger. The results are inconsistent with models based on magnetic field decay alone or monotoni"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.0502","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":"0911.0502","created_at":"2026-05-18T02:11:00.314572+00:00"},{"alias_kind":"arxiv_version","alias_value":"0911.0502v1","created_at":"2026-05-18T02:11:00.314572+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.0502","created_at":"2026-05-18T02:11:00.314572+00:00"},{"alias_kind":"pith_short_12","alias_value":"IZK7JTTCVDMT","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_16","alias_value":"IZK7JTTCVDMTX4ZI","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_8","alias_value":"IZK7JTTC","created_at":"2026-05-18T12:26:00.592388+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/IZK7JTTCVDMTX4ZIIXJ2POTK55","json":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55.json","graph_json":"https://pith.science/api/pith-number/IZK7JTTCVDMTX4ZIIXJ2POTK55/graph.json","events_json":"https://pith.science/api/pith-number/IZK7JTTCVDMTX4ZIIXJ2POTK55/events.json","paper":"https://pith.science/paper/IZK7JTTC"},"agent_actions":{"view_html":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55","download_json":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55.json","view_paper":"https://pith.science/paper/IZK7JTTC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0911.0502&json=true","fetch_graph":"https://pith.science/api/pith-number/IZK7JTTCVDMTX4ZIIXJ2POTK55/graph.json","fetch_events":"https://pith.science/api/pith-number/IZK7JTTCVDMTX4ZIIXJ2POTK55/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55/action/storage_attestation","attest_author":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55/action/author_attestation","sign_citation":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55/action/citation_signature","submit_replication":"https://pith.science/pith/IZK7JTTCVDMTX4ZIIXJ2POTK55/action/replication_record"}},"created_at":"2026-05-18T02:11:00.314572+00:00","updated_at":"2026-05-18T02:11:00.314572+00:00"}