{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:2RWNSDECKPYYN2TQ3G4734ILK3","short_pith_number":"pith:2RWNSDEC","schema_version":"1.0","canonical_sha256":"d46cd90c8253f186ea70d9b9fdf10b56cd3f34d1bb9a039cf53a2a7cc2fcb851","source":{"kind":"arxiv","id":"1205.3572","version":3},"attestation_state":"computed","paper":{"title":"Constraining the Bulk Lorentz Factor of GRB Outflow in the Magnetic-dominated Jet Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Hai-Nan Lin, Yunguo Jiang, Zhe Chang","submitted_at":"2012-05-16T06:51:21Z","abstract_excerpt":"Recent observations by the Fermi-LAT showed that there are delayed arrivals of GeV photons relative to the onset of MeV photons in some GRBs. In order to avoid a large optical depth, the minimal value of the Lorentz factor has been estimated to be higher than 1000 in some brightest bursts. In this paper, we present a detailed calculation of the time delay between the MeV and GeV photons in the framework of the magnetic-dominated jet model. We find that the time delay strongly depends on the saturated bulk Lorentz factor of the jet. Inspired by this fact, we use this model to calculate the Lore"},"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":"1205.3572","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-05-16T06:51:21Z","cross_cats_sorted":[],"title_canon_sha256":"40b90470d97c3fece462031fe218349139020278a84109b0e488fa2f768936fa","abstract_canon_sha256":"0701dbb7f282783bf13f51f578d4527925aa2ef544efc8f3302aca961a0c1196"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:38:30.074057Z","signature_b64":"Tf6i7883Y/2qsZ16Nr/muUqrn7tWiHK9ovohOaGyGxRINldLDrHSVIQaOmqvTH2OohjMhR2gW7XBJsFKph8QBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d46cd90c8253f186ea70d9b9fdf10b56cd3f34d1bb9a039cf53a2a7cc2fcb851","last_reissued_at":"2026-05-18T02:38:30.073380Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:38:30.073380Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining the Bulk Lorentz Factor of GRB Outflow in the Magnetic-dominated Jet Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Hai-Nan Lin, Yunguo Jiang, Zhe Chang","submitted_at":"2012-05-16T06:51:21Z","abstract_excerpt":"Recent observations by the Fermi-LAT showed that there are delayed arrivals of GeV photons relative to the onset of MeV photons in some GRBs. In order to avoid a large optical depth, the minimal value of the Lorentz factor has been estimated to be higher than 1000 in some brightest bursts. In this paper, we present a detailed calculation of the time delay between the MeV and GeV photons in the framework of the magnetic-dominated jet model. We find that the time delay strongly depends on the saturated bulk Lorentz factor of the jet. Inspired by this fact, we use this model to calculate the Lore"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3572","kind":"arxiv","version":3},"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":"1205.3572","created_at":"2026-05-18T02:38:30.073479+00:00"},{"alias_kind":"arxiv_version","alias_value":"1205.3572v3","created_at":"2026-05-18T02:38:30.073479+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3572","created_at":"2026-05-18T02:38:30.073479+00:00"},{"alias_kind":"pith_short_12","alias_value":"2RWNSDECKPYY","created_at":"2026-05-18T12:26:50.516681+00:00"},{"alias_kind":"pith_short_16","alias_value":"2RWNSDECKPYYN2TQ","created_at":"2026-05-18T12:26:50.516681+00:00"},{"alias_kind":"pith_short_8","alias_value":"2RWNSDEC","created_at":"2026-05-18T12:26:50.516681+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/2RWNSDECKPYYN2TQ3G4734ILK3","json":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3.json","graph_json":"https://pith.science/api/pith-number/2RWNSDECKPYYN2TQ3G4734ILK3/graph.json","events_json":"https://pith.science/api/pith-number/2RWNSDECKPYYN2TQ3G4734ILK3/events.json","paper":"https://pith.science/paper/2RWNSDEC"},"agent_actions":{"view_html":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3","download_json":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3.json","view_paper":"https://pith.science/paper/2RWNSDEC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1205.3572&json=true","fetch_graph":"https://pith.science/api/pith-number/2RWNSDECKPYYN2TQ3G4734ILK3/graph.json","fetch_events":"https://pith.science/api/pith-number/2RWNSDECKPYYN2TQ3G4734ILK3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3/action/storage_attestation","attest_author":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3/action/author_attestation","sign_citation":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3/action/citation_signature","submit_replication":"https://pith.science/pith/2RWNSDECKPYYN2TQ3G4734ILK3/action/replication_record"}},"created_at":"2026-05-18T02:38:30.073479+00:00","updated_at":"2026-05-18T02:38:30.073479+00:00"}