{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NE4GTPUY7FPZLYMM2R32QDYAF6","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":"c057740fd70761435fc9ad66bed6da3986857bb08238f8ec61e51c891f89ab59","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-19T02:04:48Z","title_canon_sha256":"0847b26bdad0c751a712f5fc74628c510c7a807cf4b031079f1705f737ac6544"},"schema_version":"1.0","source":{"id":"1907.08342","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08342","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08342v1","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08342","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"pith_short_12","alias_value":"NE4GTPUY7FPZ","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"pith_short_16","alias_value":"NE4GTPUY7FPZLYMM","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"pith_short_8","alias_value":"NE4GTPUY","created_at":"2026-07-04T23:50:21Z"}],"graph_snapshots":[{"event_id":"sha256:424882ed7ddff657f8c6d74a504e124074d7248240e279907c73c18b4dafbe3a","target":"graph","created_at":"2026-07-04T23:50:21Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1907.08342/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the luminosity function and formation rate of long gamma-ray bursts (GRBs) by using a maximum likelihood method. This is the first time this method is applied to a well-defined sample of GRBs that is complete in redshift. The sample is composed of 99 bursts detected by the $Swift$ satellite, 81 of them with measured redshift and luminosity for a completeness level of $82\\%$. We confirm that a strong redshift evolution in luminosity (with an evolution index of $\\delta=2.22^{+0.32}_{-0.31}$) or in density ($\\delta=1.92^{+0.20}_{-0.21}$) is needed in order to reproduce the observations w","authors_text":"Guang-Xuan Lan, Hou-Dun Zeng, Jun-Jie Wei, Xue-Feng Wu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-19T02:04:48Z","title":"The Luminosity Function and Formation Rate of A Complete Sample of Long Gamma-Ray Bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08342","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":"sha256:4d550618ce837f457a384919f0da618adf835e61194f3779001e6ff6c1688284","target":"record","created_at":"2026-07-04T23:50:21Z","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":"c057740fd70761435fc9ad66bed6da3986857bb08238f8ec61e51c891f89ab59","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-19T02:04:48Z","title_canon_sha256":"0847b26bdad0c751a712f5fc74628c510c7a807cf4b031079f1705f737ac6544"},"schema_version":"1.0","source":{"id":"1907.08342","kind":"arxiv","version":1}},"canonical_sha256":"693869be98f95f95e18cd477a80f002fb5417dcc4d582cdf5afe6b55cb4badbf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"693869be98f95f95e18cd477a80f002fb5417dcc4d582cdf5afe6b55cb4badbf","first_computed_at":"2026-07-04T23:50:21.404744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:50:21.404744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U1h3flN65pNVaVH8siuZ1iV2FcJkmptTFxN2h2R6HUM24edF3AeMMpWFN4Sc0sm5QrpelPGHXOa+L+3TOF11DQ==","signature_status":"signed_v1","signed_at":"2026-07-04T23:50:21.405172Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08342","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d550618ce837f457a384919f0da618adf835e61194f3779001e6ff6c1688284","sha256:424882ed7ddff657f8c6d74a504e124074d7248240e279907c73c18b4dafbe3a"],"state_sha256":"228217acf500a7a654bbc90b38878c5f8a03b54891f8f32e93aff5fb2c53c4d8"}