{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:X5GBYZB5ABPULD25DIYM32I4FX","short_pith_number":"pith:X5GBYZB5","schema_version":"1.0","canonical_sha256":"bf4c1c643d005f458f5d1a30cde91c2dc914c4b68928f1fe3658f17c06470d3f","source":{"kind":"arxiv","id":"1711.11281","version":1},"attestation_state":"computed","paper":{"title":"SARAS 2 constraints on global 21-cm signals from the Epoch of Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Anastasia Fialkov, A. Raghunathan, Aviad Cohen, B.S. Girish, K.S. Srivani, Mayuri Sathyanarayana Rao, N. Udaya Shankar, Ravi Subrahmanyan, Rennan Barkana, R. Somashekar, Saurabh Singh","submitted_at":"2017-11-30T09:30:14Z","abstract_excerpt":"Spectral distortions in the cosmic microwave background over the 40--200~MHz band are imprinted by neutral hydrogen in the intergalactic medium prior to the end of reionization. This signal, produced in the redshift range $z = 6-34$ at the rest frame wavelength of 21 cm, has not been detected yet; and poor understanding of high redshift astrophysics results in a large uncertainty in the expected spectrum. The SARAS~2 radiometer was purposely designed to detect the sky-averaged 21-cm signal. The instrument, deployed at the Timbaktu Collective (Southern India) in April--June 2017, collected 63~h"},"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":"1711.11281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-30T09:30:14Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3c44e63cd1ae80ca126b420e053b3d79b78e12000da89815c666febaa600c4d0","abstract_canon_sha256":"95263281e0963a98ceb02db2cd8de0a49c0b15d2ea3eca985b4f6a92ec592c6a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:11.021980Z","signature_b64":"Yu/ji9IiljqcI7p8+cEhM/e43jtJrUQELFJpEDO23ssIk/6JdhfqvOFDD9VKwqmV1vcg3Oolkap3MmlUmTfEDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf4c1c643d005f458f5d1a30cde91c2dc914c4b68928f1fe3658f17c06470d3f","last_reissued_at":"2026-05-18T00:14:11.021563Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:11.021563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"SARAS 2 constraints on global 21-cm signals from the Epoch of Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Anastasia Fialkov, A. Raghunathan, Aviad Cohen, B.S. Girish, K.S. Srivani, Mayuri Sathyanarayana Rao, N. Udaya Shankar, Ravi Subrahmanyan, Rennan Barkana, R. Somashekar, Saurabh Singh","submitted_at":"2017-11-30T09:30:14Z","abstract_excerpt":"Spectral distortions in the cosmic microwave background over the 40--200~MHz band are imprinted by neutral hydrogen in the intergalactic medium prior to the end of reionization. This signal, produced in the redshift range $z = 6-34$ at the rest frame wavelength of 21 cm, has not been detected yet; and poor understanding of high redshift astrophysics results in a large uncertainty in the expected spectrum. The SARAS~2 radiometer was purposely designed to detect the sky-averaged 21-cm signal. The instrument, deployed at the Timbaktu Collective (Southern India) in April--June 2017, collected 63~h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.11281","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":"1711.11281","created_at":"2026-05-18T00:14:11.021624+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.11281v1","created_at":"2026-05-18T00:14:11.021624+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.11281","created_at":"2026-05-18T00:14:11.021624+00:00"},{"alias_kind":"pith_short_12","alias_value":"X5GBYZB5ABPU","created_at":"2026-05-18T12:31:53.515858+00:00"},{"alias_kind":"pith_short_16","alias_value":"X5GBYZB5ABPULD25","created_at":"2026-05-18T12:31:53.515858+00:00"},{"alias_kind":"pith_short_8","alias_value":"X5GBYZB5","created_at":"2026-05-18T12:31:53.515858+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/X5GBYZB5ABPULD25DIYM32I4FX","json":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX.json","graph_json":"https://pith.science/api/pith-number/X5GBYZB5ABPULD25DIYM32I4FX/graph.json","events_json":"https://pith.science/api/pith-number/X5GBYZB5ABPULD25DIYM32I4FX/events.json","paper":"https://pith.science/paper/X5GBYZB5"},"agent_actions":{"view_html":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX","download_json":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX.json","view_paper":"https://pith.science/paper/X5GBYZB5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.11281&json=true","fetch_graph":"https://pith.science/api/pith-number/X5GBYZB5ABPULD25DIYM32I4FX/graph.json","fetch_events":"https://pith.science/api/pith-number/X5GBYZB5ABPULD25DIYM32I4FX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX/action/storage_attestation","attest_author":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX/action/author_attestation","sign_citation":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX/action/citation_signature","submit_replication":"https://pith.science/pith/X5GBYZB5ABPULD25DIYM32I4FX/action/replication_record"}},"created_at":"2026-05-18T00:14:11.021624+00:00","updated_at":"2026-05-18T00:14:11.021624+00:00"}