{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:3CWIHABQTBLDIMKV2LWDCPCUIJ","short_pith_number":"pith:3CWIHABQ","schema_version":"1.0","canonical_sha256":"d8ac8380309856343155d2ec313c54427afd72cbc59f11dfb9f5504ef0c19922","source":{"kind":"arxiv","id":"1904.09296","version":1},"attestation_state":"computed","paper":{"title":"DarkHistory: A code package for calculating modified cosmic ionization and thermal histories with dark matter and other exotic energy injections","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Gregory W. Ridgway, Hongwan Liu, Tracy R. Slatyer","submitted_at":"2019-04-19T18:00:05Z","abstract_excerpt":"We present a new public Python package, DarkHistory, for computing the effects of dark matter annihilation and decay on the temperature and ionization history of the early universe. DarkHistory simultaneously solves for the evolution of the free electron fraction and gas temperature, and for the cooling of annihilation/decay products and the secondary particles produced in the process. Consequently, we can self-consistently include the effects of both astrophysical and exotic sources of heating and ionization, and automatically take into account backreaction, where modifications to the ionizat"},"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":"1904.09296","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-04-19T18:00:05Z","cross_cats_sorted":["astro-ph.HE","hep-ph"],"title_canon_sha256":"3e679c96b92e5a51863bae237f34ba9cf12ac01ce4562bbeb221af2eb5581136","abstract_canon_sha256":"33028b8dcee18b2cf25360dbe858aad2e316d30ec8755599d05e059a964515fa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:38:24.296013Z","signature_b64":"a6I6uoW3NR9lnwiPVQ3sm1sHdxPyA0T3oVdmBYlpTY449oBAxodraLHgGi8Yz/YTeEf5ln4SM/JmISKi+fKFAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8ac8380309856343155d2ec313c54427afd72cbc59f11dfb9f5504ef0c19922","last_reissued_at":"2026-07-05T00:38:24.295613Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:38:24.295613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"DarkHistory: A code package for calculating modified cosmic ionization and thermal histories with dark matter and other exotic energy injections","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Gregory W. Ridgway, Hongwan Liu, Tracy R. Slatyer","submitted_at":"2019-04-19T18:00:05Z","abstract_excerpt":"We present a new public Python package, DarkHistory, for computing the effects of dark matter annihilation and decay on the temperature and ionization history of the early universe. DarkHistory simultaneously solves for the evolution of the free electron fraction and gas temperature, and for the cooling of annihilation/decay products and the secondary particles produced in the process. Consequently, we can self-consistently include the effects of both astrophysical and exotic sources of heating and ionization, and automatically take into account backreaction, where modifications to the ionizat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.09296","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1904.09296/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"1904.09296","created_at":"2026-07-05T00:38:24.295671+00:00"},{"alias_kind":"arxiv_version","alias_value":"1904.09296v1","created_at":"2026-07-05T00:38:24.295671+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.09296","created_at":"2026-07-05T00:38:24.295671+00:00"},{"alias_kind":"pith_short_12","alias_value":"3CWIHABQTBLD","created_at":"2026-07-05T00:38:24.295671+00:00"},{"alias_kind":"pith_short_16","alias_value":"3CWIHABQTBLDIMKV","created_at":"2026-07-05T00:38:24.295671+00:00"},{"alias_kind":"pith_short_8","alias_value":"3CWIHABQ","created_at":"2026-07-05T00:38:24.295671+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"1907.04324","citing_title":"Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos","ref_index":140,"is_internal_anchor":false},{"citing_arxiv_id":"2604.19198","citing_title":"Cosmological constraints on TeV-scale dark matter subcomponents decaying between recombination and reionisation","ref_index":52,"is_internal_anchor":false},{"citing_arxiv_id":"2605.08080","citing_title":"CMB Limits on the Absorption of Light Vector and Axial-Vector Dark Matter","ref_index":62,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ","json":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ.json","graph_json":"https://pith.science/api/pith-number/3CWIHABQTBLDIMKV2LWDCPCUIJ/graph.json","events_json":"https://pith.science/api/pith-number/3CWIHABQTBLDIMKV2LWDCPCUIJ/events.json","paper":"https://pith.science/paper/3CWIHABQ"},"agent_actions":{"view_html":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ","download_json":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ.json","view_paper":"https://pith.science/paper/3CWIHABQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1904.09296&json=true","fetch_graph":"https://pith.science/api/pith-number/3CWIHABQTBLDIMKV2LWDCPCUIJ/graph.json","fetch_events":"https://pith.science/api/pith-number/3CWIHABQTBLDIMKV2LWDCPCUIJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ/action/storage_attestation","attest_author":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ/action/author_attestation","sign_citation":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ/action/citation_signature","submit_replication":"https://pith.science/pith/3CWIHABQTBLDIMKV2LWDCPCUIJ/action/replication_record"}},"created_at":"2026-07-05T00:38:24.295671+00:00","updated_at":"2026-07-05T00:38:24.295671+00:00"}