{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:BUKJRD3OOXIYQ32XR6OVA4PEIC","short_pith_number":"pith:BUKJRD3O","schema_version":"1.0","canonical_sha256":"0d14988f6e75d1886f578f9d5071e440acb5f754601e925aa4f30ce7fb166abd","source":{"kind":"arxiv","id":"1804.00515","version":2},"attestation_state":"computed","paper":{"title":"On the Prospects of Measuring the Cosmic Dawn 21-cm Power Spectrum using the Upgraded Giant Meterwave Radio Telescope (uGMRT)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Somnath Bharadwaj, Suman Chatterjee","submitted_at":"2018-04-02T14:06:35Z","abstract_excerpt":"A recent observation by the EDGES collaboration shows a strong absorption signal in the global 21-cm spectrum from around a redshift of $z = 17$. This absorption is stronger than the maximum prediction by existing models and indicates that the spatial fluctuations of the \\HI 21-cm brightness temperature at Cosmic Dawn could be an order of magnitude larger than previously expected. In this paper, we investigate the prospects of detecting the \\HI 21-cm power spectrum from Cosmic Dawn using uGMRT. We find that a $10\\sigma$ detection of the enhanced \\HI 21-cm signal power spectrum is possible with"},"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":"1804.00515","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-04-02T14:06:35Z","cross_cats_sorted":[],"title_canon_sha256":"26eeed37a3d61b6607dd9f31051d313b4190af43fba3179f22809998d367d2ff","abstract_canon_sha256":"bc907c3f3ac049c6194fee6221e1c76dc5445ddb95c2d94d308b07050f43da50"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:48.187531Z","signature_b64":"ikx1nWb0S+At6w1OJcOAmWThisI8y8+B0mz9JFAoSPUdDJBQbyGB1F37vteL25Rx5K9d68LznIRo4ZZ2BOzYDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0d14988f6e75d1886f578f9d5071e440acb5f754601e925aa4f30ce7fb166abd","last_reissued_at":"2026-05-17T23:58:48.187034Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:48.187034Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the Prospects of Measuring the Cosmic Dawn 21-cm Power Spectrum using the Upgraded Giant Meterwave Radio Telescope (uGMRT)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Somnath Bharadwaj, Suman Chatterjee","submitted_at":"2018-04-02T14:06:35Z","abstract_excerpt":"A recent observation by the EDGES collaboration shows a strong absorption signal in the global 21-cm spectrum from around a redshift of $z = 17$. This absorption is stronger than the maximum prediction by existing models and indicates that the spatial fluctuations of the \\HI 21-cm brightness temperature at Cosmic Dawn could be an order of magnitude larger than previously expected. In this paper, we investigate the prospects of detecting the \\HI 21-cm power spectrum from Cosmic Dawn using uGMRT. We find that a $10\\sigma$ detection of the enhanced \\HI 21-cm signal power spectrum is possible with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00515","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":"1804.00515","created_at":"2026-05-17T23:58:48.187096+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.00515v2","created_at":"2026-05-17T23:58:48.187096+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00515","created_at":"2026-05-17T23:58:48.187096+00:00"},{"alias_kind":"pith_short_12","alias_value":"BUKJRD3OOXIY","created_at":"2026-05-18T12:32:16.446611+00:00"},{"alias_kind":"pith_short_16","alias_value":"BUKJRD3OOXIYQ32X","created_at":"2026-05-18T12:32:16.446611+00:00"},{"alias_kind":"pith_short_8","alias_value":"BUKJRD3O","created_at":"2026-05-18T12:32:16.446611+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/BUKJRD3OOXIYQ32XR6OVA4PEIC","json":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC.json","graph_json":"https://pith.science/api/pith-number/BUKJRD3OOXIYQ32XR6OVA4PEIC/graph.json","events_json":"https://pith.science/api/pith-number/BUKJRD3OOXIYQ32XR6OVA4PEIC/events.json","paper":"https://pith.science/paper/BUKJRD3O"},"agent_actions":{"view_html":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC","download_json":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC.json","view_paper":"https://pith.science/paper/BUKJRD3O","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.00515&json=true","fetch_graph":"https://pith.science/api/pith-number/BUKJRD3OOXIYQ32XR6OVA4PEIC/graph.json","fetch_events":"https://pith.science/api/pith-number/BUKJRD3OOXIYQ32XR6OVA4PEIC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC/action/storage_attestation","attest_author":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC/action/author_attestation","sign_citation":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC/action/citation_signature","submit_replication":"https://pith.science/pith/BUKJRD3OOXIYQ32XR6OVA4PEIC/action/replication_record"}},"created_at":"2026-05-17T23:58:48.187096+00:00","updated_at":"2026-05-17T23:58:48.187096+00:00"}