{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:ZFJURS273TGF4MQ3UQQFLYKCY5","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":"03e1e65d9b3f8e7de5e129c81db03895dcb291c3c07470cdcce3a94b7e1479de","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-09-21T00:20:20Z","title_canon_sha256":"45ac498f2c6acade118a5c5c6c5c911bee5e02679eef87b4f5e7bae07c909d3a"},"schema_version":"1.0","source":{"id":"0709.3332","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0709.3332","created_at":"2026-05-18T02:18:04Z"},{"alias_kind":"arxiv_version","alias_value":"0709.3332v2","created_at":"2026-05-18T02:18:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0709.3332","created_at":"2026-05-18T02:18:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZFJURS273TGF","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"ZFJURS273TGF4MQ3","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"ZFJURS27","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:a1767f223770582a77df955e9a582cf6a32dfab7a6dfd8fde2ad4495e397f761","target":"graph","created_at":"2026-05-18T02:18:04Z","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 late-time optical/radio afterglows of $\\gamma$-ray bursts (GRBs) are believed to be synchrotron emission of electrons accelerated in relativistic collisionless shocks propagating in the ambient medium of the sources. However, the fraction $f$ of electrons that are coupled to protons and accelerated remains unclear and a large number of thermal electrons that are not coupled to protons may be left behind. If $f<1$, the true explosion energies of GRBs are $f^{-1}$ times larger than those commonly estimated with $f=1$. Thus the value of $f$ gives an important constraint on the nature of the c","authors_text":"Kenji Toma, Kunihito Ioka, Takashi Nakamura","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-09-21T00:20:20Z","title":"Probing the Efficiency of Electron-Proton Coupling in Relativistic Collisionless Shocks through the Radio Polarimetry of Gamma-Ray Burst Afterglows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0709.3332","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:cb6ece6bf7bf2685c5bbcb8c47da91cde7e9a6c08687153fb039e911cd2ec593","target":"record","created_at":"2026-05-18T02:18:04Z","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":"03e1e65d9b3f8e7de5e129c81db03895dcb291c3c07470cdcce3a94b7e1479de","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-09-21T00:20:20Z","title_canon_sha256":"45ac498f2c6acade118a5c5c6c5c911bee5e02679eef87b4f5e7bae07c909d3a"},"schema_version":"1.0","source":{"id":"0709.3332","kind":"arxiv","version":2}},"canonical_sha256":"c95348cb5fdccc5e321ba42055e142c74002fa4dfbe36fb24693d249a5d1e73d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c95348cb5fdccc5e321ba42055e142c74002fa4dfbe36fb24693d249a5d1e73d","first_computed_at":"2026-05-18T02:18:04.625093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:18:04.625093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jhxa19G2zGx4VHJ1RFgFhdqpxMQkVzKCGwq148Dm71b3qoZhBsTKUqX8GmmkWBrSgN+nwEDwRAc2if56IsrxDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:18:04.625858Z","signed_message":"canonical_sha256_bytes"},"source_id":"0709.3332","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb6ece6bf7bf2685c5bbcb8c47da91cde7e9a6c08687153fb039e911cd2ec593","sha256:a1767f223770582a77df955e9a582cf6a32dfab7a6dfd8fde2ad4495e397f761"],"state_sha256":"ca519350509da2e0d9580610a8d5c9207012f03fa57c1d7dc1d05768294bb8b0"}