{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:LILDVOPGPXSJLFTV7IHO7IM7QP","short_pith_number":"pith:LILDVOPG","schema_version":"1.0","canonical_sha256":"5a163ab9e67de4959675fa0eefa19f83d98adc96770973ab603596aa07bb125e","source":{"kind":"arxiv","id":"1301.0291","version":2},"attestation_state":"computed","paper":{"title":"On the Non-existence of a Sharp Cooling Break in GRB Afterglow Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Bing Zhang, Z. Lucas Uhm","submitted_at":"2013-01-02T19:00:56Z","abstract_excerpt":"Although the widely-used analytical afterglow model of gamma-ray bursts (GRBs) predicts a sharp cooling break $\\nu_c$ in its afterglow spectrum, the GRB observations so far rarely show clear evidence for a cooling break in their spectra or its corresponding temporal break in their light curves. Employing a Lagrangian description of the blast wave, we conduct a sophisticated calculation of the afterglow emission. We precisely follow the cooling history of non-thermal electrons accelerated into each Lagrangian shell. We show that a detailed calculation of afterglow spectra does not in fact give "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1301.0291","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-01-02T19:00:56Z","cross_cats_sorted":[],"title_canon_sha256":"c73f6f7670c7b5558f80ba2f48d50e61c8f1aabfc7c210e57690fd9a7b2df5eb","abstract_canon_sha256":"c58be971d122833d6a348893f14be50ba030552b335bbf96cf150f37615cf5a9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:22.170205Z","signature_b64":"7k2sALronbctjBsMJ68oefiT/Ct4flLtaKGHi7swPLTqfhog/hvPHY/cBjDSHmnRj8YvakM3G6FlhKzIN78HCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a163ab9e67de4959675fa0eefa19f83d98adc96770973ab603596aa07bb125e","last_reissued_at":"2026-05-18T01:52:22.169744Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:22.169744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the Non-existence of a Sharp Cooling Break in GRB Afterglow Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Bing Zhang, Z. Lucas Uhm","submitted_at":"2013-01-02T19:00:56Z","abstract_excerpt":"Although the widely-used analytical afterglow model of gamma-ray bursts (GRBs) predicts a sharp cooling break $\\nu_c$ in its afterglow spectrum, the GRB observations so far rarely show clear evidence for a cooling break in their spectra or its corresponding temporal break in their light curves. Employing a Lagrangian description of the blast wave, we conduct a sophisticated calculation of the afterglow emission. We precisely follow the cooling history of non-thermal electrons accelerated into each Lagrangian shell. We show that a detailed calculation of afterglow spectra does not in fact give "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.0291","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1301.0291","created_at":"2026-05-18T01:52:22.169821+00:00"},{"alias_kind":"arxiv_version","alias_value":"1301.0291v2","created_at":"2026-05-18T01:52:22.169821+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.0291","created_at":"2026-05-18T01:52:22.169821+00:00"},{"alias_kind":"pith_short_12","alias_value":"LILDVOPGPXSJ","created_at":"2026-05-18T12:27:51.066281+00:00"},{"alias_kind":"pith_short_16","alias_value":"LILDVOPGPXSJLFTV","created_at":"2026-05-18T12:27:51.066281+00:00"},{"alias_kind":"pith_short_8","alias_value":"LILDVOPG","created_at":"2026-05-18T12:27:51.066281+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP","json":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP.json","graph_json":"https://pith.science/api/pith-number/LILDVOPGPXSJLFTV7IHO7IM7QP/graph.json","events_json":"https://pith.science/api/pith-number/LILDVOPGPXSJLFTV7IHO7IM7QP/events.json","paper":"https://pith.science/paper/LILDVOPG"},"agent_actions":{"view_html":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP","download_json":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP.json","view_paper":"https://pith.science/paper/LILDVOPG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1301.0291&json=true","fetch_graph":"https://pith.science/api/pith-number/LILDVOPGPXSJLFTV7IHO7IM7QP/graph.json","fetch_events":"https://pith.science/api/pith-number/LILDVOPGPXSJLFTV7IHO7IM7QP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP/action/storage_attestation","attest_author":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP/action/author_attestation","sign_citation":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP/action/citation_signature","submit_replication":"https://pith.science/pith/LILDVOPGPXSJLFTV7IHO7IM7QP/action/replication_record"}},"created_at":"2026-05-18T01:52:22.169821+00:00","updated_at":"2026-05-18T01:52:22.169821+00:00"}