{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:GBWCSTS4IOHJQFCO56GZBHKEWI","short_pith_number":"pith:GBWCSTS4","schema_version":"1.0","canonical_sha256":"306c294e5c438e98144eef8d909d44b206a1103c906ded3813c4755037b078f0","source":{"kind":"arxiv","id":"1110.0247","version":2},"attestation_state":"computed","paper":{"title":"Radiative transfer effects during primordial helium recombination","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Eric R. Switzer, Jeffrey Fung, Jens Chluba","submitted_at":"2011-10-03T00:31:11Z","abstract_excerpt":"In this paper we refine the calculation of primordial helium recombination, accounting for several additional effects that were neglected or treated more approximately in previous studies. These include consideration of (i) time-dependent radiative transfer interaction between the 2^1 P_1 - 1^1 S_0 and 2^3 P_1 - 1^1 S_0 resonances; (ii) time-dependent radiative transfer for the partially overlapping n^1 P_1 - 1^1 S_0, n^1 D_2 - 1^1 S_0 and n^3 P_1 - 1^1 S_0 series with 3 <= n <= 10; (iii) electron scattering within a kernel approach. We also briefly discuss the effect of electron scattering an"},"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":"1110.0247","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-03T00:31:11Z","cross_cats_sorted":[],"title_canon_sha256":"d5285443eb278681c513d66686ed20c29eb02d1521a2ca4b2267f2527cf92978","abstract_canon_sha256":"4a9bbf7d54ef9615ac5dfc3ee810beedf80f518f2a095ec17d0d5114417832b0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:18.904134Z","signature_b64":"Pnt6M3mUmbaK34gFMhpc4kqF4G3LYsbmQFNYswVlWDEQhex4cDcfZQ3KoY1oq/ADS73IO9zKfvTMCkE0LluRAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"306c294e5c438e98144eef8d909d44b206a1103c906ded3813c4755037b078f0","last_reissued_at":"2026-05-18T02:00:18.903231Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:18.903231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Radiative transfer effects during primordial helium recombination","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Eric R. Switzer, Jeffrey Fung, Jens Chluba","submitted_at":"2011-10-03T00:31:11Z","abstract_excerpt":"In this paper we refine the calculation of primordial helium recombination, accounting for several additional effects that were neglected or treated more approximately in previous studies. These include consideration of (i) time-dependent radiative transfer interaction between the 2^1 P_1 - 1^1 S_0 and 2^3 P_1 - 1^1 S_0 resonances; (ii) time-dependent radiative transfer for the partially overlapping n^1 P_1 - 1^1 S_0, n^1 D_2 - 1^1 S_0 and n^3 P_1 - 1^1 S_0 series with 3 <= n <= 10; (iii) electron scattering within a kernel approach. We also briefly discuss the effect of electron scattering an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0247","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":"1110.0247","created_at":"2026-05-18T02:00:18.903361+00:00"},{"alias_kind":"arxiv_version","alias_value":"1110.0247v2","created_at":"2026-05-18T02:00:18.903361+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0247","created_at":"2026-05-18T02:00:18.903361+00:00"},{"alias_kind":"pith_short_12","alias_value":"GBWCSTS4IOHJ","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_16","alias_value":"GBWCSTS4IOHJQFCO","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_8","alias_value":"GBWCSTS4","created_at":"2026-05-18T12:26:28.662955+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/GBWCSTS4IOHJQFCO56GZBHKEWI","json":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI.json","graph_json":"https://pith.science/api/pith-number/GBWCSTS4IOHJQFCO56GZBHKEWI/graph.json","events_json":"https://pith.science/api/pith-number/GBWCSTS4IOHJQFCO56GZBHKEWI/events.json","paper":"https://pith.science/paper/GBWCSTS4"},"agent_actions":{"view_html":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI","download_json":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI.json","view_paper":"https://pith.science/paper/GBWCSTS4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1110.0247&json=true","fetch_graph":"https://pith.science/api/pith-number/GBWCSTS4IOHJQFCO56GZBHKEWI/graph.json","fetch_events":"https://pith.science/api/pith-number/GBWCSTS4IOHJQFCO56GZBHKEWI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/action/storage_attestation","attest_author":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/action/author_attestation","sign_citation":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/action/citation_signature","submit_replication":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/action/replication_record"}},"created_at":"2026-05-18T02:00:18.903361+00:00","updated_at":"2026-05-18T02:00:18.903361+00:00"}