{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:TOGTNKVGHRUNZOEFYZPQR5QNRB","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":"41a4382e7aa2e99c7c9c02daa9617cbfbf0f83f0aff05a8d8c22f5c2ba6d20f2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-29T21:20:42Z","title_canon_sha256":"7a2b10eb6e3e42761fa1ef66495483393b945aa22701b8d940c10a7e9dab888c"},"schema_version":"1.0","source":{"id":"1611.09885","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.09885","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"arxiv_version","alias_value":"1611.09885v1","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.09885","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"pith_short_12","alias_value":"TOGTNKVGHRUN","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"TOGTNKVGHRUNZOEF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"TOGTNKVG","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:06eec3618b52eebdc5bd60dfe929b3707d87dd4c8fe3388221b5dbe6d35903b0","target":"graph","created_at":"2026-05-18T00:52:37Z","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":"Determining neutron star (NS) radii and masses can help to understand the properties of matter at supra-nuclear densities. Thermal emission during thermonuclear X-ray bursts from NSs in low-mass X-ray binaries provides a unique opportunity to study NS parameters, because of the high fluxes, large luminosity variations and the related changes in the spectral properties. The standard cooling tail method uses hot NS atmosphere models to convert the observed spectral evolution during cooling stages of X-ray bursts to the Eddington flux F_Edd and the stellar angular size \\Omega. These are then tran","authors_text":"Jari J.E. Kajava, Joonas N\\\"attil\\\"a, Juri Poutanen, Klaus Werner, Mikhail G. Revnivtsev, Valery F. Suleimanov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-29T21:20:42Z","title":"The direct cooling tail method for X-ray burst analysis to constrain neutron star masses and radii"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.09885","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:f0ed03d8bfcf40d2e2e106c331f7500e4a8d296aa4ba65ad659d8f4ea8008c1d","target":"record","created_at":"2026-05-18T00:52:37Z","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":"41a4382e7aa2e99c7c9c02daa9617cbfbf0f83f0aff05a8d8c22f5c2ba6d20f2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-29T21:20:42Z","title_canon_sha256":"7a2b10eb6e3e42761fa1ef66495483393b945aa22701b8d940c10a7e9dab888c"},"schema_version":"1.0","source":{"id":"1611.09885","kind":"arxiv","version":1}},"canonical_sha256":"9b8d36aaa63c68dcb885c65f08f60d885f6625f28d20cab25bafd7ca92e8a5c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b8d36aaa63c68dcb885c65f08f60d885f6625f28d20cab25bafd7ca92e8a5c7","first_computed_at":"2026-05-18T00:52:37.512036Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:37.512036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nUcdIcLJ1xA0YSipXeTMvM4ODzp7kAOtt5BncbcuerAIqsVs7lGSJPcLAZxEpU8VKGUDGKfgvkNRyMdqcV1FAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:37.512485Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.09885","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0ed03d8bfcf40d2e2e106c331f7500e4a8d296aa4ba65ad659d8f4ea8008c1d","sha256:06eec3618b52eebdc5bd60dfe929b3707d87dd4c8fe3388221b5dbe6d35903b0"],"state_sha256":"e963b1bd8000966d022c4a242ca1c80115a8e8b74d4bb00152f72e009e9202f2"}