{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:VFZX3GPTVTYSPVJDQ3CTL4OUZZ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"447450ee67e80d989533f4f8dab878bebc61ff8df1c093fc67e701a81f919c40","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-06-13T12:56:19Z","title_canon_sha256":"d6492cc5cdba03e3c7914520c030fa15843e57ec3aac81c83d9e98ac5bd84390"},"schema_version":"1.0","source":{"id":"1106.2432","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2432","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2432v2","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2432","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"pith_short_12","alias_value":"VFZX3GPTVTYS","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VFZX3GPTVTYSPVJD","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VFZX3GPT","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:7a6026dc71f1b07fe2beff11c2f3c77688d3bc1c70cf6041990418b14fa3998a","target":"graph","created_at":"2026-05-18T04:06:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Using the intrinsic PSR J1903+0327 parameters evaluated from radio observations (mass, rotation period and dipole magnetic field deduced from the timing properties) we calculate the mass of its neutron star progenitor, M_i, at the onset of accretion. Simultaneously, we derive constraints on average accretion rate Mdot and the pre-accretion magnetic field B_i. Spin-up is modelled by accretion from a thin disk, using the magnetic-torque disk-pulsar coupling model proposed by Kluzniak and Rappaport (2007), improved for the existence of relativistic marginally-stable circular orbit. Orbital parame","authors_text":"J. L. Zdunik, M. Bejger, M. Fortin, P. Haensel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-06-13T12:56:19Z","title":"Implications of the measured parameters of PSR J1903+0327 for its progenitor neutron star"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2432","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:ddf1099bae033abd0cf3645503ff9a7cc9257495fa2ea3073fafa879c104e72c","target":"record","created_at":"2026-05-18T04:06:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"447450ee67e80d989533f4f8dab878bebc61ff8df1c093fc67e701a81f919c40","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-06-13T12:56:19Z","title_canon_sha256":"d6492cc5cdba03e3c7914520c030fa15843e57ec3aac81c83d9e98ac5bd84390"},"schema_version":"1.0","source":{"id":"1106.2432","kind":"arxiv","version":2}},"canonical_sha256":"a9737d99f3acf127d52386c535f1d4ce6d0378f12c963deaa7f79ffc026f5ac0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9737d99f3acf127d52386c535f1d4ce6d0378f12c963deaa7f79ffc026f5ac0","first_computed_at":"2026-05-18T04:06:33.114087Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:06:33.114087Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a0v93+i0tExdHYXinM1yFNPsF+Z2dXY4qNdmkAiOO0p5V3PVZ5vJjKX1J+iMsYASOu1mkuOWyL0JBAiiOZUNAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:06:33.114830Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.2432","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ddf1099bae033abd0cf3645503ff9a7cc9257495fa2ea3073fafa879c104e72c","sha256:7a6026dc71f1b07fe2beff11c2f3c77688d3bc1c70cf6041990418b14fa3998a"],"state_sha256":"02d3089faf72ded4293f454c355cc58edb864b409528f292c013039bcd903249"}