{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XUB2J5GTTXQRH4QNC3TGYRMM2G","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":"39f7cedf5516a855ade0b8a5977603b1e86b036ac56c8fe01165b538660dff2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-11T18:42:57Z","title_canon_sha256":"2b2c6d3d83baccd057d018341f159c6221b8134e5659115fed0a6e9303055e6b"},"schema_version":"1.0","source":{"id":"1402.2595","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.2595","created_at":"2026-05-18T01:44:45Z"},{"alias_kind":"arxiv_version","alias_value":"1402.2595v2","created_at":"2026-05-18T01:44:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.2595","created_at":"2026-05-18T01:44:45Z"},{"alias_kind":"pith_short_12","alias_value":"XUB2J5GTTXQR","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XUB2J5GTTXQRH4QN","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XUB2J5GT","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:0f97fafc9f2bdd1dde87e3bb37400e2dbaaed2fec2849cde725449ad5d350bf3","target":"graph","created_at":"2026-05-18T01:44:45Z","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":"We show that the light curve of the double GeV+optical flash in GRB 130427A is consistent with radiation from the blast wave in a wind-type medium with density parameter $A=\\rho r^2\\sim 5\\times 10^{10}$ g cm$^{-1}$. The peak of the flash is emitted by copious $e^\\pm$ pairs created and heated in the blast wave; our first-principle calculation determines the pair-loading factor and temperature of the shocked plasma. Using detailed radiative transfer simulations we reconstruct the observed double flash. The optical flash is dominated by synchrotron emission from the thermal plasma behind the forw","authors_text":"Andrei M. Beloborodov, Indrek Vurm, Romain Hascoet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-11T18:42:57Z","title":"Pair-dominated GeV-optical flash in GRB 130427A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.2595","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:c0b9aec7851929ef1cc3c67ef6518175178453432c3f86aa363bd689f667e43a","target":"record","created_at":"2026-05-18T01:44:45Z","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":"39f7cedf5516a855ade0b8a5977603b1e86b036ac56c8fe01165b538660dff2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-11T18:42:57Z","title_canon_sha256":"2b2c6d3d83baccd057d018341f159c6221b8134e5659115fed0a6e9303055e6b"},"schema_version":"1.0","source":{"id":"1402.2595","kind":"arxiv","version":2}},"canonical_sha256":"bd03a4f4d39de113f20d16e66c458cd1a12d8012c95674eacd1f4984ed563a7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd03a4f4d39de113f20d16e66c458cd1a12d8012c95674eacd1f4984ed563a7f","first_computed_at":"2026-05-18T01:44:45.283816Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:45.283816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L+zmoW/szFiwCJiAhDuR+R0t+yXDklh1O6Lkc+CyFrKyLSF4fs3nyPu8wicSekD3spueIGzncvlbGxqLU7XjCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:45.284637Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.2595","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0b9aec7851929ef1cc3c67ef6518175178453432c3f86aa363bd689f667e43a","sha256:0f97fafc9f2bdd1dde87e3bb37400e2dbaaed2fec2849cde725449ad5d350bf3"],"state_sha256":"05b6399fe0f5a5d7e6ff0740cca045ef85f3f3eb1ed928186b7dcdd71ca6cbac"}