{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ASWLY2363GJXBIA62OJNYKY5G4","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":"29f98199a9ffa5b81c149dae0c0d3c94521aea17ccc3a1696a68d8feee927d3b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-06T20:03:58Z","title_canon_sha256":"c76d4361af1551a68572df43d4bf780186a7a16cd937b6fa87a139c0f877235b"},"schema_version":"1.0","source":{"id":"1008.1269","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.1269","created_at":"2026-05-18T02:05:58Z"},{"alias_kind":"arxiv_version","alias_value":"1008.1269v2","created_at":"2026-05-18T02:05:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.1269","created_at":"2026-05-18T02:05:58Z"},{"alias_kind":"pith_short_12","alias_value":"ASWLY2363GJX","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"ASWLY2363GJXBIA6","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"ASWLY236","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:18484b8312d37e7943f7a84e58d4dadcf99fb82016f3b035adc6eb31a22cd3c8","target":"graph","created_at":"2026-05-18T02:05:58Z","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":"Population III stars are theoretically expected to be prominent around redshifts z ~ 20, consisting of mainly very massive stars with M_* >~ 10 M_sun$, but there is no direct observational evidence for these objects. They may produce collapsar gamma-ray bursts (GRBs), with jets driven by magnetohydrodynamic processes, whose total isotropic-equivalent energy could be as high as E_iso >~ 10^{57} erg over a cosmological-rest-frame duration of t_d >~ 10^4 s, depending on the progenitor mass. Here we calculate the afterglow spectra of such Pop. III GRBs based on the standard external shock model, a","authors_text":"Kenji Toma, Peter Meszaros, Takanori Sakamoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-06T20:03:58Z","title":"Population III GRB Afterglows: Constraints on Stellar Masses and External Medium Densities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.1269","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":"sha256:660da522d685738dd9a92572bddf7f45f537276e5325f3bdf0dc816ed1ecea28","target":"record","created_at":"2026-05-18T02:05:58Z","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":"29f98199a9ffa5b81c149dae0c0d3c94521aea17ccc3a1696a68d8feee927d3b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-06T20:03:58Z","title_canon_sha256":"c76d4361af1551a68572df43d4bf780186a7a16cd937b6fa87a139c0f877235b"},"schema_version":"1.0","source":{"id":"1008.1269","kind":"arxiv","version":2}},"canonical_sha256":"04acbc6b7ed99370a01ed392dc2b1d372359215d483e25d97cb2994d85466948","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04acbc6b7ed99370a01ed392dc2b1d372359215d483e25d97cb2994d85466948","first_computed_at":"2026-05-18T02:05:58.196054Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:58.196054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hh1XEiI+mRGhuOPusOk01XibAjnXVEvqY/PkueAJD0kQRIO+gFAXDpbdDWlwNmBmofLGCAkJFUsDTt0rHpqCBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:58.196947Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.1269","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:660da522d685738dd9a92572bddf7f45f537276e5325f3bdf0dc816ed1ecea28","sha256:18484b8312d37e7943f7a84e58d4dadcf99fb82016f3b035adc6eb31a22cd3c8"],"state_sha256":"429e4f6179a503f05ebaecdc83f6fd6700ca9cc75ee2849f47783269113e8cde"}