{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:K5RGASYFVELVETJ4VMC76EYIAF","short_pith_number":"pith:K5RGASYF","schema_version":"1.0","canonical_sha256":"5762604b05a917524d3cab05ff130801691e6f5cba7349b17a504b289da5608f","source":{"kind":"arxiv","id":"1910.02889","version":1},"attestation_state":"computed","paper":{"title":"Low-redshift 21cm Cosmology in Canada","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Adrian Liu, Dallas Wulf, Hamsa Padmanabhan, H. Cynthia Chiang, Jonathan Sievers, Keith Vanderlinde, Matt Dobbs, Seth Siegel, Simon Foreman","submitted_at":"2019-10-07T16:21:10Z","abstract_excerpt":"Line-intensity mapping of the 21cm line is a powerful probe of large scale structure at z<6, tracing large-scale structure via neutral hydrogen content that is found within galaxies. In principle, it enables cost-efficient surveys of the matter distribution up to z~6, unlocking orders of magnitude more modes for observational cosmology. Canada has been a traditional leader in this field, having led the first detections of the cosmological 21cm signal via cross-correlations with optical galaxy surveys and having constructed the Canadian Hydrogen Intensity Mapping Experiment (CHIME). The field i"},"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":"1910.02889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-10-07T16:21:10Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"687fb256c48ada4304560ec59e43ffeee0f61776fca9ebbdf7802abbe1eb2ecd","abstract_canon_sha256":"3c1d170cd46823e8cea24a9244d69f58f5d2b2824ae5a699b2033ac8d76c357e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:04:03.558662Z","signature_b64":"UXN7/kFdixZw0iM0hxJuP3/aqb2JRXcCYhhLNS+fHRbJemegcKXLn6Ug+vqSH5v7McEmvgglhYC/Wn8+LB0jDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5762604b05a917524d3cab05ff130801691e6f5cba7349b17a504b289da5608f","last_reissued_at":"2026-07-05T01:04:03.558188Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:04:03.558188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low-redshift 21cm Cosmology in Canada","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Adrian Liu, Dallas Wulf, Hamsa Padmanabhan, H. Cynthia Chiang, Jonathan Sievers, Keith Vanderlinde, Matt Dobbs, Seth Siegel, Simon Foreman","submitted_at":"2019-10-07T16:21:10Z","abstract_excerpt":"Line-intensity mapping of the 21cm line is a powerful probe of large scale structure at z<6, tracing large-scale structure via neutral hydrogen content that is found within galaxies. In principle, it enables cost-efficient surveys of the matter distribution up to z~6, unlocking orders of magnitude more modes for observational cosmology. Canada has been a traditional leader in this field, having led the first detections of the cosmological 21cm signal via cross-correlations with optical galaxy surveys and having constructed the Canadian Hydrogen Intensity Mapping Experiment (CHIME). The field i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.02889","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/1910.02889/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":"1910.02889","created_at":"2026-07-05T01:04:03.558242+00:00"},{"alias_kind":"arxiv_version","alias_value":"1910.02889v1","created_at":"2026-07-05T01:04:03.558242+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.02889","created_at":"2026-07-05T01:04:03.558242+00:00"},{"alias_kind":"pith_short_12","alias_value":"K5RGASYFVELV","created_at":"2026-07-05T01:04:03.558242+00:00"},{"alias_kind":"pith_short_16","alias_value":"K5RGASYFVELVETJ4","created_at":"2026-07-05T01:04:03.558242+00:00"},{"alias_kind":"pith_short_8","alias_value":"K5RGASYF","created_at":"2026-07-05T01:04:03.558242+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.15287","citing_title":"Neutrino self-interactions in post-reionization era: Lyman-$\\alpha$, 21-cm and cross-spectra","ref_index":31,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF","json":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF.json","graph_json":"https://pith.science/api/pith-number/K5RGASYFVELVETJ4VMC76EYIAF/graph.json","events_json":"https://pith.science/api/pith-number/K5RGASYFVELVETJ4VMC76EYIAF/events.json","paper":"https://pith.science/paper/K5RGASYF"},"agent_actions":{"view_html":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF","download_json":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF.json","view_paper":"https://pith.science/paper/K5RGASYF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1910.02889&json=true","fetch_graph":"https://pith.science/api/pith-number/K5RGASYFVELVETJ4VMC76EYIAF/graph.json","fetch_events":"https://pith.science/api/pith-number/K5RGASYFVELVETJ4VMC76EYIAF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF/action/storage_attestation","attest_author":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF/action/author_attestation","sign_citation":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF/action/citation_signature","submit_replication":"https://pith.science/pith/K5RGASYFVELVETJ4VMC76EYIAF/action/replication_record"}},"created_at":"2026-07-05T01:04:03.558242+00:00","updated_at":"2026-07-05T01:04:03.558242+00:00"}