{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:EDUISKHQGTB4PD5BTTZVRT6ROE","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":"cd67eedbbf11f415b08e4e9d63d35284b03e967a981590a4362378dbb8468fbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-23T18:00:00Z","title_canon_sha256":"f672471e585d67a267ed545772d59d612b31b506b6ef78c489a299956f18cbc7"},"schema_version":"1.0","source":{"id":"1803.08924","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08924","created_at":"2026-05-17T23:55:59Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08924v2","created_at":"2026-05-17T23:55:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08924","created_at":"2026-05-17T23:55:59Z"},{"alias_kind":"pith_short_12","alias_value":"EDUISKHQGTB4","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EDUISKHQGTB4PD5B","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EDUISKHQ","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:15314c13d746a3057cb6ce0a8a3d81fdb9e3003fc7cf0c09865864f755a3d1db","target":"graph","created_at":"2026-05-17T23:55:59Z","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 study electron-positron pair production in polar caps of energetic pulsars to determine the maximum multiplicity of pair plasma a pulsar can produce under the most favorable conditions. This paper complements and updates our study of pair cascades presented in Timokhin & Harding (2015) with more accurate treatment of the effects of ultra strong B>3x10^{12}G magnetic fields and emission processes of primary and secondary particles. We include pairs produced by curvature and synchrotron radiation photons as well as resonant Compton scattered photons. We develop a semi-analytical model of elec","authors_text":"A.K. Harding, A.N. Timokhin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-23T18:00:00Z","title":"On the maximum pair multiplicity of pulsar cascades"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08924","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":"sha256:578fb4546a6a5611ba71527a75f213c3dcd7bead73619ede6d26fe2422752978","target":"record","created_at":"2026-05-17T23:55:59Z","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":"cd67eedbbf11f415b08e4e9d63d35284b03e967a981590a4362378dbb8468fbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-23T18:00:00Z","title_canon_sha256":"f672471e585d67a267ed545772d59d612b31b506b6ef78c489a299956f18cbc7"},"schema_version":"1.0","source":{"id":"1803.08924","kind":"arxiv","version":2}},"canonical_sha256":"20e88928f034c3c78fa19cf358cfd171307ec14afdc6adf1e9b2e79673631c3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20e88928f034c3c78fa19cf358cfd171307ec14afdc6adf1e9b2e79673631c3e","first_computed_at":"2026-05-17T23:55:59.250755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:59.250755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U+jbs2XbpySgiCnkKnqeiV8djDMVczN0WXg3lpCXmtVjjGPLBALubPzQlcbLH0sKfrNgG9spkKTewM1eEhJvAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:59.251437Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.08924","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:578fb4546a6a5611ba71527a75f213c3dcd7bead73619ede6d26fe2422752978","sha256:15314c13d746a3057cb6ce0a8a3d81fdb9e3003fc7cf0c09865864f755a3d1db"],"state_sha256":"e1b59f099c37f80a3d3e073fa19bd325403a91692e72b2f65c03ffe24bc0100b"}