{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7TN456UI6NPCLH2NKIBVTCTOXC","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":"e3cb319913da5617818bb6262e8a96e16551256b5560adad8ded171cd51b5ace","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-25T15:56:29Z","title_canon_sha256":"ac36bab68be620d0ea22d700174068332ad7d2719679c2af3eb0165d42e8f3c6"},"schema_version":"1.0","source":{"id":"1210.6884","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6884","created_at":"2026-05-18T01:53:37Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6884v1","created_at":"2026-05-18T01:53:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6884","created_at":"2026-05-18T01:53:37Z"},{"alias_kind":"pith_short_12","alias_value":"7TN456UI6NPC","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7TN456UI6NPCLH2N","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7TN456UI","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:f0883fb56b9a90ebd4e4438c0d160a4d3b4991084c8950772e91f3e34209eb23","target":"graph","created_at":"2026-05-18T01:53:37Z","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 have obtained initial spectroscopic observations and additional photometry of the newly discovered Pb=94min gamma-ray black-widow pulsar PSR J1311-3430. The Keck spectra show a He-dominated, nearly H-free photosphere and a large radial-velocity amplitude of 609.5+/-7.5km/s. Simultaneous seven-color GROND photometry further probes the heating of this companion, and shows the presence of a flaring infrared excess. We have modeled the quiescent light curve, constraining the orbital inclination and masses. Simple heated light-curve fits give M_NS=2.7Msun, but show systematic light-curve differe","authors_text":"Alexei V. Filippenko, Arne Rau, Holger J. Pletsch, Jeffery M. Silverman, Jochen Greiner, Jonathan Elliott, Roger W. Romani, S. Bradley Cenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-25T15:56:29Z","title":"PSR J1311-3430: A Heavyweight Neutron Star with a Flyweight Helium Companion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6884","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":"sha256:8a22812e97d27f6ba945128928bbb6e294ef1db26675fce700ad1f9ee574b022","target":"record","created_at":"2026-05-18T01:53:37Z","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":"e3cb319913da5617818bb6262e8a96e16551256b5560adad8ded171cd51b5ace","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-25T15:56:29Z","title_canon_sha256":"ac36bab68be620d0ea22d700174068332ad7d2719679c2af3eb0165d42e8f3c6"},"schema_version":"1.0","source":{"id":"1210.6884","kind":"arxiv","version":1}},"canonical_sha256":"fcdbcefa88f35e259f4d5203598a6eb898b01bdaf84effb857835473f78a29b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcdbcefa88f35e259f4d5203598a6eb898b01bdaf84effb857835473f78a29b6","first_computed_at":"2026-05-18T01:53:37.620581Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:37.620581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AVTToukIiIO0AgQMAuLpUL/EtNLE3Ic346hQzLOzWD1XLK1gzqO4hzmKdzs3J4nffJzPQI2NmBSnhwIr6Ev1CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:37.621123Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.6884","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a22812e97d27f6ba945128928bbb6e294ef1db26675fce700ad1f9ee574b022","sha256:f0883fb56b9a90ebd4e4438c0d160a4d3b4991084c8950772e91f3e34209eb23"],"state_sha256":"e0b65d9112eb76c60ca4888a0370b3e8805d91e587a8fd983f3b53b4cfdc4174"}