{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:ASCC5ZYEWUK5IOEKL2X6IFORRH","short_pith_number":"pith:ASCC5ZYE","schema_version":"1.0","canonical_sha256":"04842ee704b515d4388a5eafe415d189ce868b0c78a25b2d553f36d0c4c425d5","source":{"kind":"arxiv","id":"1903.06212","version":1},"attestation_state":"computed","paper":{"title":"Astro 2020 Science White Paper: Fundamental Cosmology in the Dark Ages with 21-cm Line Fluctuations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Aaron Parsons, Adam Beardsley, Adam Lidz, Adrian Liu, Anastasia Fialkov, Andrew Mesinger, Benjamin Saliwanchik, Bryna Hazelton, Chris L. Carilli, Cora Dvorkin, Daniel Jacobs, David DeBoer, Eli Visbal, Ely Kovetz, Frederick Davies, George Becker, Hsin Chiang, Hy Trac, Jack Burns, James Aguirre, Joanne Cohn, Jonathan C. Pober, Jonathan Sievers, Jordan Mirocha, Joshua Dillon, Judd D. Bowman, Julian Munoz, Kirit Karkare, Kiyoshi Masui, Leon Koopmans, Marcelo Alvarez, Matias Zaldarriaga, Nithyanandan Thyagarajan, Olivier Dor\\'e, Patrick Breysse, Paul La Plante, Philip Bull, Saul Kohn, Steven Furlanetto, Steven Murray, Tzu-Ching Chang, Volker Bromm, Xuelei Chen, Yacine Ali-Haimoud, Yi Mao, Yin-Zhe Ma","submitted_at":"2019-03-14T18:40:21Z","abstract_excerpt":"The Dark Ages are the period between the last scattering of the cosmic microwave background and the appearance of the first luminous sources, spanning approximately 1100 < z < 30. The only known way to measure fluctuations in this era is through the 21-cm line of neutral hydrogen. Such observations have enormous potential for cosmology, because they span a large volume while the fluctuations remain linear even on small scales. Observations of 21-cm fluctuations during this era can therefore constrain fundamental aspects of our Universe, including inflation and any exotic physics of dark matter"},"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":"1903.06212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-03-14T18:40:21Z","cross_cats_sorted":[],"title_canon_sha256":"47f699a9b8f0f96f33cd5d7d2f8e88122ddca49e635584fe47bff744511c0dbb","abstract_canon_sha256":"44d9af3e95d00b0e4119c47a65e2608c6a28da92a7499aaeafb4ea051056e24a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:11.466987Z","signature_b64":"p16F4gpOoPXBEDs+zNJct27Z3txhLd73278/+UB0NLtcfYfaVELYB5oKdP65BGInSNdos4dRg/2mkFDXk2lJCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"04842ee704b515d4388a5eafe415d189ce868b0c78a25b2d553f36d0c4c425d5","last_reissued_at":"2026-05-17T23:51:11.466558Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:11.466558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Astro 2020 Science White Paper: Fundamental Cosmology in the Dark Ages with 21-cm Line Fluctuations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Aaron Parsons, Adam Beardsley, Adam Lidz, Adrian Liu, Anastasia Fialkov, Andrew Mesinger, Benjamin Saliwanchik, Bryna Hazelton, Chris L. Carilli, Cora Dvorkin, Daniel Jacobs, David DeBoer, Eli Visbal, Ely Kovetz, Frederick Davies, George Becker, Hsin Chiang, Hy Trac, Jack Burns, James Aguirre, Joanne Cohn, Jonathan C. Pober, Jonathan Sievers, Jordan Mirocha, Joshua Dillon, Judd D. Bowman, Julian Munoz, Kirit Karkare, Kiyoshi Masui, Leon Koopmans, Marcelo Alvarez, Matias Zaldarriaga, Nithyanandan Thyagarajan, Olivier Dor\\'e, Patrick Breysse, Paul La Plante, Philip Bull, Saul Kohn, Steven Furlanetto, Steven Murray, Tzu-Ching Chang, Volker Bromm, Xuelei Chen, Yacine Ali-Haimoud, Yi Mao, Yin-Zhe Ma","submitted_at":"2019-03-14T18:40:21Z","abstract_excerpt":"The Dark Ages are the period between the last scattering of the cosmic microwave background and the appearance of the first luminous sources, spanning approximately 1100 < z < 30. The only known way to measure fluctuations in this era is through the 21-cm line of neutral hydrogen. Such observations have enormous potential for cosmology, because they span a large volume while the fluctuations remain linear even on small scales. Observations of 21-cm fluctuations during this era can therefore constrain fundamental aspects of our Universe, including inflation and any exotic physics of dark matter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.06212","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":""},"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":"1903.06212","created_at":"2026-05-17T23:51:11.466622+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.06212v1","created_at":"2026-05-17T23:51:11.466622+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.06212","created_at":"2026-05-17T23:51:11.466622+00:00"},{"alias_kind":"pith_short_12","alias_value":"ASCC5ZYEWUK5","created_at":"2026-05-18T12:33:12.712433+00:00"},{"alias_kind":"pith_short_16","alias_value":"ASCC5ZYEWUK5IOEK","created_at":"2026-05-18T12:33:12.712433+00:00"},{"alias_kind":"pith_short_8","alias_value":"ASCC5ZYE","created_at":"2026-05-18T12:33:12.712433+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1907.06440","citing_title":"A Roadmap for Astrophysics and Cosmology with High-Redshift 21 cm Intensity Mapping","ref_index":6,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH","json":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH.json","graph_json":"https://pith.science/api/pith-number/ASCC5ZYEWUK5IOEKL2X6IFORRH/graph.json","events_json":"https://pith.science/api/pith-number/ASCC5ZYEWUK5IOEKL2X6IFORRH/events.json","paper":"https://pith.science/paper/ASCC5ZYE"},"agent_actions":{"view_html":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH","download_json":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH.json","view_paper":"https://pith.science/paper/ASCC5ZYE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.06212&json=true","fetch_graph":"https://pith.science/api/pith-number/ASCC5ZYEWUK5IOEKL2X6IFORRH/graph.json","fetch_events":"https://pith.science/api/pith-number/ASCC5ZYEWUK5IOEKL2X6IFORRH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH/action/storage_attestation","attest_author":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH/action/author_attestation","sign_citation":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH/action/citation_signature","submit_replication":"https://pith.science/pith/ASCC5ZYEWUK5IOEKL2X6IFORRH/action/replication_record"}},"created_at":"2026-05-17T23:51:11.466622+00:00","updated_at":"2026-05-17T23:51:11.466622+00:00"}