{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:5TINJ3ZKCT6TBABNVQU5PS6NXZ","short_pith_number":"pith:5TINJ3ZK","schema_version":"1.0","canonical_sha256":"ecd0d4ef2a14fd30802dac29d7cbcdbe5c58a0c9024b3d5c82876c732472962d","source":{"kind":"arxiv","id":"1401.4172","version":2},"attestation_state":"computed","paper":{"title":"Constraining the epoch of reionization with the variance statistic: simulations of the LOFAR case","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abhik Ghosh, A. G. de Bruyn, Ajinkya H. Patil, Andre. R. Offringa, Benedetta Ciardi, Elizabeth R. Fernandez, Emma Chapman, Filipe B. Abdalla, Garrelt Mellema, Geraint Harker, Gianni Bernardi, Hannes Jensen, Harish K. Vedantham, Joop Schaye, Khan M. B. Asad, L\\'eon V. E. Koopmans, Maaijke Mevius, Michiel A. Brentjens, Oscar Martinez, Panagiotis Labropoulos, Rajat M. Thomas, Saleem Zaroubi, Sanaz Kazemi, Sander Bus, Sarod Yatawatta, Soobash Daiboo, Stefan J. Wijnholds, Vamsikrishna Veligatla, Vibor Jeli\\'c, Vishhambhar N. Pandey","submitted_at":"2014-01-16T21:00:17Z","abstract_excerpt":"Several experiments are underway to detect the cosmic redshifted 21-cm signal from neutral hydrogen from the Epoch of Reionization (EoR). Due to their very low signal-to-noise ratio, these observations aim for a statistical detection of the signal by measuring its power spectrum. We investigate the extraction of the variance of the signal as a first step towards detecting and constraining the global history of the EoR. Signal variance is the integral of the signal's power spectrum, and it is expected to be measured with a high significance. We demonstrate this through results from a simulation"},"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":"1401.4172","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-01-16T21:00:17Z","cross_cats_sorted":[],"title_canon_sha256":"07d60b0437c8b5c8f46e4cc38985be6dc90722bacb6323ba1243696a8a745513","abstract_canon_sha256":"ff869cf046edbd647a79841bc98d9823e1f987bbdd4fb3da38e45a30e9c48c19"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:46:32.735959Z","signature_b64":"fl4qvUKFRYXplEKeQK6y5gVSl7kOn7iUqmiIoAmtWMfwztxVTjih8rQm2w8BnUV5iNL4Hz4z869jiWsVdJxJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ecd0d4ef2a14fd30802dac29d7cbcdbe5c58a0c9024b3d5c82876c732472962d","last_reissued_at":"2026-05-18T02:46:32.735518Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:46:32.735518Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining the epoch of reionization with the variance statistic: simulations of the LOFAR case","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abhik Ghosh, A. G. de Bruyn, Ajinkya H. Patil, Andre. R. Offringa, Benedetta Ciardi, Elizabeth R. Fernandez, Emma Chapman, Filipe B. Abdalla, Garrelt Mellema, Geraint Harker, Gianni Bernardi, Hannes Jensen, Harish K. Vedantham, Joop Schaye, Khan M. B. Asad, L\\'eon V. E. Koopmans, Maaijke Mevius, Michiel A. Brentjens, Oscar Martinez, Panagiotis Labropoulos, Rajat M. Thomas, Saleem Zaroubi, Sanaz Kazemi, Sander Bus, Sarod Yatawatta, Soobash Daiboo, Stefan J. Wijnholds, Vamsikrishna Veligatla, Vibor Jeli\\'c, Vishhambhar N. Pandey","submitted_at":"2014-01-16T21:00:17Z","abstract_excerpt":"Several experiments are underway to detect the cosmic redshifted 21-cm signal from neutral hydrogen from the Epoch of Reionization (EoR). Due to their very low signal-to-noise ratio, these observations aim for a statistical detection of the signal by measuring its power spectrum. We investigate the extraction of the variance of the signal as a first step towards detecting and constraining the global history of the EoR. Signal variance is the integral of the signal's power spectrum, and it is expected to be measured with a high significance. We demonstrate this through results from a simulation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4172","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":""},"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":"1401.4172","created_at":"2026-05-18T02:46:32.735585+00:00"},{"alias_kind":"arxiv_version","alias_value":"1401.4172v2","created_at":"2026-05-18T02:46:32.735585+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4172","created_at":"2026-05-18T02:46:32.735585+00:00"},{"alias_kind":"pith_short_12","alias_value":"5TINJ3ZKCT6T","created_at":"2026-05-18T12:28:16.859392+00:00"},{"alias_kind":"pith_short_16","alias_value":"5TINJ3ZKCT6TBABN","created_at":"2026-05-18T12:28:16.859392+00:00"},{"alias_kind":"pith_short_8","alias_value":"5TINJ3ZK","created_at":"2026-05-18T12:28:16.859392+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ","json":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ.json","graph_json":"https://pith.science/api/pith-number/5TINJ3ZKCT6TBABNVQU5PS6NXZ/graph.json","events_json":"https://pith.science/api/pith-number/5TINJ3ZKCT6TBABNVQU5PS6NXZ/events.json","paper":"https://pith.science/paper/5TINJ3ZK"},"agent_actions":{"view_html":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ","download_json":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ.json","view_paper":"https://pith.science/paper/5TINJ3ZK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1401.4172&json=true","fetch_graph":"https://pith.science/api/pith-number/5TINJ3ZKCT6TBABNVQU5PS6NXZ/graph.json","fetch_events":"https://pith.science/api/pith-number/5TINJ3ZKCT6TBABNVQU5PS6NXZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ/action/storage_attestation","attest_author":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ/action/author_attestation","sign_citation":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ/action/citation_signature","submit_replication":"https://pith.science/pith/5TINJ3ZKCT6TBABNVQU5PS6NXZ/action/replication_record"}},"created_at":"2026-05-18T02:46:32.735585+00:00","updated_at":"2026-05-18T02:46:32.735585+00:00"}