{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:GBWCSTS4IOHJQFCO56GZBHKEWI","short_pith_number":"pith:GBWCSTS4","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"},"canonical_sha256":"306c294e5c438e98144eef8d909d44b206a1103c906ded3813c4755037b078f0","source":{"kind":"arxiv","id":"1110.0247","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0247","created_at":"2026-05-18T02:00:18Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0247v2","created_at":"2026-05-18T02:00:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0247","created_at":"2026-05-18T02:00:18Z"},{"alias_kind":"pith_short_12","alias_value":"GBWCSTS4IOHJ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"GBWCSTS4IOHJQFCO","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"GBWCSTS4","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:GBWCSTS4IOHJQFCO56GZBHKEWI","target":"record","payload":{"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"},"canonical_sha256":"306c294e5c438e98144eef8d909d44b206a1103c906ded3813c4755037b078f0","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"},"source_kind":"arxiv","source_id":"1110.0247","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:00:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KHhm6imtBHIjEs4HLj2tR+/PGqzYTy/2XGJJkD51kTBycEosfbPObLFySNYdI0lVtxmNSXVX9hg3ZBkUBHcJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:07:05.467343Z"},"content_sha256":"2923a07780e46bbe03babf0dd893649c74489e7245bc1c3f2247426b4ab9fa18","schema_version":"1.0","event_id":"sha256:2923a07780e46bbe03babf0dd893649c74489e7245bc1c3f2247426b4ab9fa18"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:GBWCSTS4IOHJQFCO56GZBHKEWI","target":"graph","payload":{"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:00:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2YwcZb/MZJEy6VHNBDqk9tNVrzYSeYVcMvksYaLNYC5PDtbyINDzJkGespa55mcivjOuZ0DyQSQiDqDMxhr4AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:07:05.467994Z"},"content_sha256":"6e7ee0e52113ce659cbd71a8c83a72aadbde3193e1a123711cb6a97096f0be34","schema_version":"1.0","event_id":"sha256:6e7ee0e52113ce659cbd71a8c83a72aadbde3193e1a123711cb6a97096f0be34"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/bundle.json","state_url":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T04:07:05Z","links":{"resolver":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI","bundle":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/bundle.json","state":"https://pith.science/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GBWCSTS4IOHJQFCO56GZBHKEWI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GBWCSTS4IOHJQFCO56GZBHKEWI","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":"4a9bbf7d54ef9615ac5dfc3ee810beedf80f518f2a095ec17d0d5114417832b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-03T00:31:11Z","title_canon_sha256":"d5285443eb278681c513d66686ed20c29eb02d1521a2ca4b2267f2527cf92978"},"schema_version":"1.0","source":{"id":"1110.0247","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0247","created_at":"2026-05-18T02:00:18Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0247v2","created_at":"2026-05-18T02:00:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0247","created_at":"2026-05-18T02:00:18Z"},{"alias_kind":"pith_short_12","alias_value":"GBWCSTS4IOHJ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"GBWCSTS4IOHJQFCO","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"GBWCSTS4","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:6e7ee0e52113ce659cbd71a8c83a72aadbde3193e1a123711cb6a97096f0be34","target":"graph","created_at":"2026-05-18T02:00:18Z","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":"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","authors_text":"Eric R. Switzer, Jeffrey Fung, Jens Chluba","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-03T00:31:11Z","title":"Radiative transfer effects during primordial helium recombination"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0247","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":"sha256:2923a07780e46bbe03babf0dd893649c74489e7245bc1c3f2247426b4ab9fa18","target":"record","created_at":"2026-05-18T02:00:18Z","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":"4a9bbf7d54ef9615ac5dfc3ee810beedf80f518f2a095ec17d0d5114417832b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-03T00:31:11Z","title_canon_sha256":"d5285443eb278681c513d66686ed20c29eb02d1521a2ca4b2267f2527cf92978"},"schema_version":"1.0","source":{"id":"1110.0247","kind":"arxiv","version":2}},"canonical_sha256":"306c294e5c438e98144eef8d909d44b206a1103c906ded3813c4755037b078f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"306c294e5c438e98144eef8d909d44b206a1103c906ded3813c4755037b078f0","first_computed_at":"2026-05-18T02:00:18.903231Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:18.903231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Pnt6M3mUmbaK34gFMhpc4kqF4G3LYsbmQFNYswVlWDEQhex4cDcfZQ3KoY1oq/ADS73IO9zKfvTMCkE0LluRAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:18.904134Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.0247","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2923a07780e46bbe03babf0dd893649c74489e7245bc1c3f2247426b4ab9fa18","sha256:6e7ee0e52113ce659cbd71a8c83a72aadbde3193e1a123711cb6a97096f0be34"],"state_sha256":"dde885a9e0d1c9dc54381aa1c8326f5d947c52500b6add2ba418f594d4c3c224"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lb+Dh6UjgUxWG8oCvAx1zPk4lr1um0NqwvYK6fIFnzRzQ/60ms6A7TYOkn5dtCY5mxMMc1nZUhsQb80JVBdjAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:07:05.471491Z","bundle_sha256":"9b3445a236bd37fd2210e267464447c3715cacb27aa82f9c34f57170dffaf07e"}}