{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:EXONUNWV6AGKEKSHFEM6CGQIVW","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":"a00a456bd516f409579b95573f66962ae853145d5564c3f0d3f18a7fb0122222","cross_cats_sorted":["astro-ph.CO","hep-ph","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-11-28T20:35:17Z","title_canon_sha256":"bbe276ce804355798d29405e222a0940e469d0c6d257cf5687001c749ab009f5"},"schema_version":"1.0","source":{"id":"1511.08925","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.08925","created_at":"2026-05-18T01:21:46Z"},{"alias_kind":"arxiv_version","alias_value":"1511.08925v2","created_at":"2026-05-18T01:21:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.08925","created_at":"2026-05-18T01:21:46Z"},{"alias_kind":"pith_short_12","alias_value":"EXONUNWV6AGK","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EXONUNWV6AGKEKSH","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EXONUNWV","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:9af8cbc2c7e5531ddf7642b5199693055c6f05eb6b082f47fae98929f6e9f3a5","target":"graph","created_at":"2026-05-18T01:21:46Z","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":"The duration distribution of 947 GRBs observed by $Swift$/BAT, as well as its subsample of 347 events with measured redshift, allowing to examine the durations in both the observer and rest frames, are examined. Using a maximum log-likelihood method, mixtures of two and three standard Gaussians are fitted to each sample, and the adequate model is chosen based on the value of the difference in the log-likelihoods, Akaike information criterion and Bayesian information criterion. It is found that a two-Gaussian is a better description than a three-Gaussian, and that the presumed intermediate-dura","authors_text":"Mariusz Tarnopolski","cross_cats":["astro-ph.CO","hep-ph","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-11-28T20:35:17Z","title":"Analysis of the observed and intrinsic durations of $Swift$/BAT gamma-ray bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.08925","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":"sha256:0c3b7a767c5ffa31cad62ab25c8436621090105cfef61718ec5acc645b76ca3a","target":"record","created_at":"2026-05-18T01:21:46Z","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":"a00a456bd516f409579b95573f66962ae853145d5564c3f0d3f18a7fb0122222","cross_cats_sorted":["astro-ph.CO","hep-ph","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-11-28T20:35:17Z","title_canon_sha256":"bbe276ce804355798d29405e222a0940e469d0c6d257cf5687001c749ab009f5"},"schema_version":"1.0","source":{"id":"1511.08925","kind":"arxiv","version":2}},"canonical_sha256":"25dcda36d5f00ca22a472919e11a08ad98f5cbe8c39422ccb0b1ef8c5f337d7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25dcda36d5f00ca22a472919e11a08ad98f5cbe8c39422ccb0b1ef8c5f337d7d","first_computed_at":"2026-05-18T01:21:46.906674Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:46.906674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1JOrZbEsIkyLQt7+0d67FibaxcHSmFnQXzHrJdbmN/4HLDcIRmA+7i5xB/S5VDOO3iWSyskVzrKfIKxj58ixDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:46.907619Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.08925","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c3b7a767c5ffa31cad62ab25c8436621090105cfef61718ec5acc645b76ca3a","sha256:9af8cbc2c7e5531ddf7642b5199693055c6f05eb6b082f47fae98929f6e9f3a5"],"state_sha256":"77edd6dd9a08a7425c1fac6ee440e5ebb5a26e6138edd1da222e59865f725a92"}