{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XG5HVNEZXP4GUHFUZPKTVFTWF7","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":"6658b9ecf1687f3217429743113659752ff506f8fdb665fcc3923ad8ab08a4bb","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-03T04:16:41Z","title_canon_sha256":"cc24df94e2afd1d5982620fbd194ebdce3021fe62862acf04193eadc7494aaab"},"schema_version":"1.0","source":{"id":"1207.0570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0570","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0570v1","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0570","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"pith_short_12","alias_value":"XG5HVNEZXP4G","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XG5HVNEZXP4GUHFU","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XG5HVNEZ","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:056e04cfeb3f974876fae5d95299527cee5df4559ebc6b847740873de5c0e35e","target":"graph","created_at":"2026-05-18T01:56:35Z","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":"We report a periodicity of ~1 day in the highly elevated X-ray emission from the protostar V1647 Ori during its two recent multiple-year outbursts of mass accretion. This periodicity is indicative of protostellar rotation at near-breakup speed. Modeling of the phased X-ray light curve indicates the high-temperature (~50 MK), X-ray-emitting plasma, which is most likely heated by accretion-induced magnetic reconnection, resides in dense (>~5e10 cm-3), pancake-shaped magnetic footprints where the accretion stream feeds the newborn star. The sustained X-ray periodicity of V1647 Ori demonstrates th","authors_text":"David A. Weintraub, David Principe, Joel H. Kastner, Kenji Hamaguchi, Michael Richmond, Nicolas Grosso, Robert Petre, William K. Teets","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-03T04:16:41Z","title":"X-raying the Beating Heart of a Newborn Star: Rotational Modulation of High-energy Radiation from V1647 Ori"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0570","kind":"arxiv","version":1},"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":"sha256:10acc7785939e7f74ce07c6dae80bc4a004d3f0a8b11dd79e9f74b0f58b007cc","target":"record","created_at":"2026-05-18T01:56:35Z","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":"6658b9ecf1687f3217429743113659752ff506f8fdb665fcc3923ad8ab08a4bb","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-03T04:16:41Z","title_canon_sha256":"cc24df94e2afd1d5982620fbd194ebdce3021fe62862acf04193eadc7494aaab"},"schema_version":"1.0","source":{"id":"1207.0570","kind":"arxiv","version":1}},"canonical_sha256":"b9ba7ab499bbf86a1cb4cbd53a96762ff105982d1a37c385f0cc91654498ab13","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9ba7ab499bbf86a1cb4cbd53a96762ff105982d1a37c385f0cc91654498ab13","first_computed_at":"2026-05-18T01:56:35.477347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:35.477347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yR6jedQrxaoXDtlTjp+5WovPUmc9C6BNj9QtcA6FIXc3jdytj5szG941W2bvEODTDp3IMEPyL6/aGTTBBceqCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:35.477803Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.0570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10acc7785939e7f74ce07c6dae80bc4a004d3f0a8b11dd79e9f74b0f58b007cc","sha256:056e04cfeb3f974876fae5d95299527cee5df4559ebc6b847740873de5c0e35e"],"state_sha256":"d141fddc170c30222dce89a72152657e56af259462356aa4716524b53af39c46"}