{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EB4KTY32WUDO65XX7ZAQH4LTJB","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":"4d53d6f4e862316b3f68cad72efbc4dcb68368e5f0928e96eb13e1157c1557f6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-07T16:12:19Z","title_canon_sha256":"0970ecbf4931f8d765879936f9f4585ad7ac92455617b734ebbfaea948198270"},"schema_version":"1.0","source":{"id":"1905.02665","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.02665","created_at":"2026-07-04T23:51:42Z"},{"alias_kind":"arxiv_version","alias_value":"1905.02665v1","created_at":"2026-07-04T23:51:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.02665","created_at":"2026-07-04T23:51:42Z"},{"alias_kind":"pith_short_12","alias_value":"EB4KTY32WUDO","created_at":"2026-07-04T23:51:42Z"},{"alias_kind":"pith_short_16","alias_value":"EB4KTY32WUDO65XX","created_at":"2026-07-04T23:51:42Z"},{"alias_kind":"pith_short_8","alias_value":"EB4KTY32","created_at":"2026-07-04T23:51:42Z"}],"graph_snapshots":[{"event_id":"sha256:4cff4193bd49b7061ff47d70cdd22a921eee5968013c127cac0969ea72409335","target":"graph","created_at":"2026-07-04T23:51:42Z","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/1905.02665/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We systematically investigate the outflow structure of GW170817 in comparison with a sample of 27 cosmological short GRBs by modelling their afterglow light curves. We find that cosmological short GRBs share the same outflow structures with GW170817, relativistic structured jets. The jet opening angle of GW170817 is $6.3^{+1.1}_{-0.6}{}^{\\circ}$, which is consistent with that of cosmological short GRBs ($\\theta_0 = 6.9^\\circ \\pm 2.3^{\\circ}$). Our analysis indicates that GW170817 is viewed off-axis ($\\theta_{\\rm obs} = 30^{+7}_{-4}{}^{\\circ}$), while cosmological short GRBs are viewed on-axis ","authors_text":"Andrew MacFadyen, Yiyang Wu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-07T16:12:19Z","title":"GW170817 Afterglow Reveals that Short Gamma-Ray Bursts are Neutron Star Mergers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.02665","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:f4747b9639bd0d62a0f33075bb5505a39ff1ad60749c80599824f6cb82f9200c","target":"record","created_at":"2026-07-04T23:51:42Z","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":"4d53d6f4e862316b3f68cad72efbc4dcb68368e5f0928e96eb13e1157c1557f6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-07T16:12:19Z","title_canon_sha256":"0970ecbf4931f8d765879936f9f4585ad7ac92455617b734ebbfaea948198270"},"schema_version":"1.0","source":{"id":"1905.02665","kind":"arxiv","version":1}},"canonical_sha256":"2078a9e37ab506ef76f7fe4103f1734853feb2519d74312d0c16c1657a70f88b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2078a9e37ab506ef76f7fe4103f1734853feb2519d74312d0c16c1657a70f88b","first_computed_at":"2026-07-04T23:51:42.419357Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:51:42.419357Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4Ty1oOCTbL0glO+eK5A++RBYECt48Tz945O9yAkXU/hpabKF/S63/eu8gGZQSIWVKJVFy5LauBPTRQj7CMtvCA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:51:42.419850Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.02665","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4747b9639bd0d62a0f33075bb5505a39ff1ad60749c80599824f6cb82f9200c","sha256:4cff4193bd49b7061ff47d70cdd22a921eee5968013c127cac0969ea72409335"],"state_sha256":"530060dda1b4fb4b78281e51d6989206e0c14fe3b9bf7eec48201af785e36013"}