{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:TI5RF6IYIENV5WQHQLK7VIGYFN","short_pith_number":"pith:TI5RF6IY","schema_version":"1.0","canonical_sha256":"9a3b12f918411b5eda0782d5faa0d82b4de882af9e9d497b428557f64c22fd66","source":{"kind":"arxiv","id":"2305.08593","version":3},"attestation_state":"computed","paper":{"title":"Prospects for precision cosmology with the 21 cm signal from the dark ages","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Rajesh Mondal, Rennan Barkana","submitted_at":"2023-05-15T12:18:31Z","abstract_excerpt":"The 21 cm signal from the dark ages provides a potential new probe of fundamental cosmology. While exotic physics could be discovered, here we quantify the expected benefits within the standard cosmology. A measurement of the global (sky-averaged) 21 cm signal to the precision of thermal noise from a 1,000 h integration would yield a measurement within 10% of a combination of cosmological parameters. A 10,000 h integration would improve this measurement to 3.2% and constrain the cosmic helium fraction to 9.9%. Precision cosmology with 21 cm fluctuations requires a collecting area of 10 km$^2$ "},"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":"2305.08593","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-05-15T12:18:31Z","cross_cats_sorted":[],"title_canon_sha256":"f2d21e36b804b29c8d70fb52120ce93eb4ff1e2c412cefba4a1d884c6391fa85","abstract_canon_sha256":"ba9f75b3d27c5603fca5e5942eb7946a0d776b8545328d8835de01f98d9d2266"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:52:23.379217Z","signature_b64":"U7o3xhiwZcaKe7niG/MWDl5qx/ZugXsdSo9A7FdRzgFR0ClKo7/iPlutJD+TmxUl7J72wVCvijRvE2R9HY52Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a3b12f918411b5eda0782d5faa0d82b4de882af9e9d497b428557f64c22fd66","last_reissued_at":"2026-07-05T06:52:23.378729Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:52:23.378729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Prospects for precision cosmology with the 21 cm signal from the dark ages","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Rajesh Mondal, Rennan Barkana","submitted_at":"2023-05-15T12:18:31Z","abstract_excerpt":"The 21 cm signal from the dark ages provides a potential new probe of fundamental cosmology. While exotic physics could be discovered, here we quantify the expected benefits within the standard cosmology. A measurement of the global (sky-averaged) 21 cm signal to the precision of thermal noise from a 1,000 h integration would yield a measurement within 10% of a combination of cosmological parameters. A 10,000 h integration would improve this measurement to 3.2% and constrain the cosmic helium fraction to 9.9%. Precision cosmology with 21 cm fluctuations requires a collecting area of 10 km$^2$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.08593","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2305.08593/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":"2305.08593","created_at":"2026-07-05T06:52:23.378787+00:00"},{"alias_kind":"arxiv_version","alias_value":"2305.08593v3","created_at":"2026-07-05T06:52:23.378787+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.08593","created_at":"2026-07-05T06:52:23.378787+00:00"},{"alias_kind":"pith_short_12","alias_value":"TI5RF6IYIENV","created_at":"2026-07-05T06:52:23.378787+00:00"},{"alias_kind":"pith_short_16","alias_value":"TI5RF6IYIENV5WQH","created_at":"2026-07-05T06:52:23.378787+00:00"},{"alias_kind":"pith_short_8","alias_value":"TI5RF6IY","created_at":"2026-07-05T06:52:23.378787+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.23314","citing_title":"Wedge-avoidance Fisher Forecasts for Primordial Non-Gaussianity from Dark-Ages 21-cm Power Spectrum and Bispectrum","ref_index":12,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN","json":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN.json","graph_json":"https://pith.science/api/pith-number/TI5RF6IYIENV5WQHQLK7VIGYFN/graph.json","events_json":"https://pith.science/api/pith-number/TI5RF6IYIENV5WQHQLK7VIGYFN/events.json","paper":"https://pith.science/paper/TI5RF6IY"},"agent_actions":{"view_html":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN","download_json":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN.json","view_paper":"https://pith.science/paper/TI5RF6IY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2305.08593&json=true","fetch_graph":"https://pith.science/api/pith-number/TI5RF6IYIENV5WQHQLK7VIGYFN/graph.json","fetch_events":"https://pith.science/api/pith-number/TI5RF6IYIENV5WQHQLK7VIGYFN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN/action/storage_attestation","attest_author":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN/action/author_attestation","sign_citation":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN/action/citation_signature","submit_replication":"https://pith.science/pith/TI5RF6IYIENV5WQHQLK7VIGYFN/action/replication_record"}},"created_at":"2026-07-05T06:52:23.378787+00:00","updated_at":"2026-07-05T06:52:23.378787+00:00"}