{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:GRQN6A2XQJDXTBYV6B7XGYUTI6","short_pith_number":"pith:GRQN6A2X","schema_version":"1.0","canonical_sha256":"3460df03578247798715f07f736293478b2ea85d83eef934e5ddc8d7ee97446e","source":{"kind":"arxiv","id":"2408.06626","version":2},"attestation_state":"computed","paper":{"title":"The First Large Absorption Survey in HI (FLASH): II. Pilot Survey data release and first results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aidan W. Hotan, Alastair C. Edge, A. Ng, Baerbel S. Koribalski, C\\'eline P\\'eroux, Chris J. Phillips, David Brodrick, Douglas B. Hayman, Douglas C.-J. Bock, Elaine M. Sadler, Elizabeth K. Mahony, Emily F. Kerrison, F.R. Cooray, Gordon German, Hyein Yoon, James R. Allison, Jeremy Darling, J.N.H.S. Aditya, John D. Bunton, Joseph R. Callingham, Kathryn Grasha, Kevin A. Pimbblet, Kimberly L. Emig, K. Lee-Waddell, Lewis Ball, Lilian Garratt-Smithson, Marcin Glowacki, Martin Zwaan, Matthew Whiting, Maxim A. Voronkov, Max Pettini, N. M. McClure-Griffiths, O. Ivy Wong, Philip G. Edwards, Raffaella Morganti, Renzhi Su, Sara L. Ellison, Simon Weng, Stephen J. Curran, Tobias Westmeier, Tom Oosterloo, Vanessa A. Moss, Wasim Raja, Zheng Zheng","submitted_at":"2024-08-13T04:29:15Z","abstract_excerpt":"The First Large Absorption Survey in HI (FLASH) is a large-area radio survey for neutral hydrogen in the redshift range 0.4<z<1.0, using the 21cm HI absorption line as a probe of cold neutral gas. FLASH uses the ASKAP radio telescope and is the first large 21cm absorption survey to be carried out without any optical preselection of targets. We use an automated Bayesian line-finding tool to search through large datasets and assign a statistical significance to potential line detections. Two Pilot Surveys, covering around 3000 deg$^2$ of sky, were carried out in 2019-22 to test and verify the st"},"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":"2408.06626","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-08-13T04:29:15Z","cross_cats_sorted":[],"title_canon_sha256":"aedde2ca55b18f2d9a6cd2d0e590a7109cb01628b3cee8d7b8c6ac2cbeed0e7b","abstract_canon_sha256":"9c0b62db2e268b5c7b626be4ee7ebab914650ab38a29fb213f1adc8b01748149"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:07:59.986490Z","signature_b64":"FSAUTcgu+WzyYyMPomgNQkHSK9XIBkaONuLVcg00epAIZKRExYNCtnXlG+p03SpNXHxtntk1wzuaxo8lUoARCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3460df03578247798715f07f736293478b2ea85d83eef934e5ddc8d7ee97446e","last_reissued_at":"2026-07-05T11:07:59.985883Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:07:59.985883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The First Large Absorption Survey in HI (FLASH): II. Pilot Survey data release and first results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aidan W. Hotan, Alastair C. Edge, A. Ng, Baerbel S. Koribalski, C\\'eline P\\'eroux, Chris J. Phillips, David Brodrick, Douglas B. Hayman, Douglas C.-J. Bock, Elaine M. Sadler, Elizabeth K. Mahony, Emily F. Kerrison, F.R. Cooray, Gordon German, Hyein Yoon, James R. Allison, Jeremy Darling, J.N.H.S. Aditya, John D. Bunton, Joseph R. Callingham, Kathryn Grasha, Kevin A. Pimbblet, Kimberly L. Emig, K. Lee-Waddell, Lewis Ball, Lilian Garratt-Smithson, Marcin Glowacki, Martin Zwaan, Matthew Whiting, Maxim A. Voronkov, Max Pettini, N. M. McClure-Griffiths, O. Ivy Wong, Philip G. Edwards, Raffaella Morganti, Renzhi Su, Sara L. Ellison, Simon Weng, Stephen J. Curran, Tobias Westmeier, Tom Oosterloo, Vanessa A. Moss, Wasim Raja, Zheng Zheng","submitted_at":"2024-08-13T04:29:15Z","abstract_excerpt":"The First Large Absorption Survey in HI (FLASH) is a large-area radio survey for neutral hydrogen in the redshift range 0.4<z<1.0, using the 21cm HI absorption line as a probe of cold neutral gas. FLASH uses the ASKAP radio telescope and is the first large 21cm absorption survey to be carried out without any optical preselection of targets. We use an automated Bayesian line-finding tool to search through large datasets and assign a statistical significance to potential line detections. Two Pilot Surveys, covering around 3000 deg$^2$ of sky, were carried out in 2019-22 to test and verify the st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.06626","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.06626/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":"2408.06626","created_at":"2026-07-05T11:07:59.985967+00:00"},{"alias_kind":"arxiv_version","alias_value":"2408.06626v2","created_at":"2026-07-05T11:07:59.985967+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.06626","created_at":"2026-07-05T11:07:59.985967+00:00"},{"alias_kind":"pith_short_12","alias_value":"GRQN6A2XQJDX","created_at":"2026-07-05T11:07:59.985967+00:00"},{"alias_kind":"pith_short_16","alias_value":"GRQN6A2XQJDXTBYV","created_at":"2026-07-05T11:07:59.985967+00:00"},{"alias_kind":"pith_short_8","alias_value":"GRQN6A2X","created_at":"2026-07-05T11:07:59.985967+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2412.16663","citing_title":"Quantum coherence and the invisible Universe: Subradiance as a dark matter mechanism","ref_index":31,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6","json":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6.json","graph_json":"https://pith.science/api/pith-number/GRQN6A2XQJDXTBYV6B7XGYUTI6/graph.json","events_json":"https://pith.science/api/pith-number/GRQN6A2XQJDXTBYV6B7XGYUTI6/events.json","paper":"https://pith.science/paper/GRQN6A2X"},"agent_actions":{"view_html":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6","download_json":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6.json","view_paper":"https://pith.science/paper/GRQN6A2X","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2408.06626&json=true","fetch_graph":"https://pith.science/api/pith-number/GRQN6A2XQJDXTBYV6B7XGYUTI6/graph.json","fetch_events":"https://pith.science/api/pith-number/GRQN6A2XQJDXTBYV6B7XGYUTI6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6/action/storage_attestation","attest_author":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6/action/author_attestation","sign_citation":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6/action/citation_signature","submit_replication":"https://pith.science/pith/GRQN6A2XQJDXTBYV6B7XGYUTI6/action/replication_record"}},"created_at":"2026-07-05T11:07:59.985967+00:00","updated_at":"2026-07-05T11:07:59.985967+00:00"}