{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:OGYSE23O3B4IYFH6K643RJ2U5O","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":"e7e0effb6af76d9d3f347527eed0e7014949401d78cdb0c2ef45f92e2eefe648","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-07-05T23:51:39Z","title_canon_sha256":"19cfd2498d03bf7a2d764c86f509c97e5c1e03c83ab5bf0a25614e461b4a9ad5"},"schema_version":"1.0","source":{"id":"1507.01303","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01303","created_at":"2026-05-18T01:32:28Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01303v1","created_at":"2026-05-18T01:32:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01303","created_at":"2026-05-18T01:32:28Z"},{"alias_kind":"pith_short_12","alias_value":"OGYSE23O3B4I","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"OGYSE23O3B4IYFH6","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"OGYSE23O","created_at":"2026-05-18T12:29:34Z"}],"graph_snapshots":[{"event_id":"sha256:23eddd6a72319bf3afec7bc4de474a24ab3ab1aaeffcf7ffe6d687b89d72ddf4","target":"graph","created_at":"2026-05-18T01:32:28Z","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":"Within the framework of the external shock model of gamma-ray bursts (GRBs) afterglows, we perform a morphological analysis of the early optical lightcurves to directly constrain model parameters. We define four morphological types, i.e. the reverse shock dominated cases with/without the emergence of the forward shock peak (Type I/ Type II), and the forward shock dominated cases without/with $\\nu_m$ crossing the band (Type III/IV). We systematically investigate all the Swift GRBs that have optical detection earlier than 500 s and find 3/63 Type I bursts (4.8%), 12/63 Type II bursts (19.0%), 30","authors_text":"Bing Zhang, He Gao, Peter M\\'esz\\'aros, Xiang-Gao Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-07-05T23:51:39Z","title":"A morphological analysis of gamma-ray burst early optical afterglows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01303","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":"sha256:94c23c4df320b64372f944b49981df38683ddad6974ec9a34b8227da881c7eee","target":"record","created_at":"2026-05-18T01:32:28Z","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":"e7e0effb6af76d9d3f347527eed0e7014949401d78cdb0c2ef45f92e2eefe648","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-07-05T23:51:39Z","title_canon_sha256":"19cfd2498d03bf7a2d764c86f509c97e5c1e03c83ab5bf0a25614e461b4a9ad5"},"schema_version":"1.0","source":{"id":"1507.01303","kind":"arxiv","version":1}},"canonical_sha256":"71b1226b6ed8788c14fe57b9b8a754ebb0b4a2813502d2929b41e188b39c8137","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71b1226b6ed8788c14fe57b9b8a754ebb0b4a2813502d2929b41e188b39c8137","first_computed_at":"2026-05-18T01:32:28.879279Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:28.879279Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Kcb0+oXYoxNuXrbxqx8CwLVn6F1OHEVZmgcZudVfmvnNfXCl3QqQAyZFy+mQlU2din6S9pMRhkb1ATBzf1H1Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:28.879729Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.01303","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94c23c4df320b64372f944b49981df38683ddad6974ec9a34b8227da881c7eee","sha256:23eddd6a72319bf3afec7bc4de474a24ab3ab1aaeffcf7ffe6d687b89d72ddf4"],"state_sha256":"c1da399fd9374169f1d72fadaae58247ca4acfacacdad12f8979bf2b89889a7a"}