{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:AQOGNXTFPHQRCXR5SYOQA2J64M","short_pith_number":"pith:AQOGNXTF","schema_version":"1.0","canonical_sha256":"041c66de6579e1115e3d961d00693ee307ae127772b1121cabb210cc153fa3dc","source":{"kind":"arxiv","id":"1307.4576","version":2},"attestation_state":"computed","paper":{"title":"A gas-rich AGN near the centre of a galaxy cluster at z ~ 1.4","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"1), (2) INAF-OAA, (3) Obs. de Paris, (4) University of Bologna), A. Mignano (1), E. Sani (2), F. Combes (3), F. Fontani (2) ((1) INAF-IRA, Italian ARC, L. Magrini (2), R. Paladino (4, V. Casasola (1)","submitted_at":"2013-07-17T11:02:41Z","abstract_excerpt":"The formation of the first virialized structures in overdensities dates back to ~9 Gyr ago, i.e. in the redshift range z ~ 1.4 - 1.6. Some models of structure formation predict that the star formation activity in clusters was high at that epoch, implying large reservoirs of cold molecular gas. Aiming at finding a trace of this expected high molecular gas content in primeval clusters, we searched for the 12CO(2-1) line emission in the most luminous active galactic nucleus (AGN) of the cluster around the radio galaxy 7C 1756+6520 at z ~ 1.4, one of the farthest spectroscopic confirmed clusters. "},"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":"1307.4576","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-07-17T11:02:41Z","cross_cats_sorted":[],"title_canon_sha256":"b64b21343ed77f309c58832b9dbc2bf7316c726693418c3ee7fc336c304824d5","abstract_canon_sha256":"979b60d13b6d5a091ec2be8d1914e6b9fd7fbe95ee99a143958f036c8d21d9ec"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:43.525181Z","signature_b64":"rzAkhD1bezSaCwkJYJ7c/6m5ACZIy3ZvOLzXXCeEZ9LR0Vbb9LL2s1Ij2MXXJE4fhPz3ny74MBUb2OKf3k4PAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"041c66de6579e1115e3d961d00693ee307ae127772b1121cabb210cc153fa3dc","last_reissued_at":"2026-05-18T01:48:43.524661Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:43.524661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A gas-rich AGN near the centre of a galaxy cluster at z ~ 1.4","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"1), (2) INAF-OAA, (3) Obs. de Paris, (4) University of Bologna), A. Mignano (1), E. Sani (2), F. Combes (3), F. Fontani (2) ((1) INAF-IRA, Italian ARC, L. Magrini (2), R. Paladino (4, V. Casasola (1)","submitted_at":"2013-07-17T11:02:41Z","abstract_excerpt":"The formation of the first virialized structures in overdensities dates back to ~9 Gyr ago, i.e. in the redshift range z ~ 1.4 - 1.6. Some models of structure formation predict that the star formation activity in clusters was high at that epoch, implying large reservoirs of cold molecular gas. Aiming at finding a trace of this expected high molecular gas content in primeval clusters, we searched for the 12CO(2-1) line emission in the most luminous active galactic nucleus (AGN) of the cluster around the radio galaxy 7C 1756+6520 at z ~ 1.4, one of the farthest spectroscopic confirmed clusters. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4576","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":"1307.4576","created_at":"2026-05-18T01:48:43.524751+00:00"},{"alias_kind":"arxiv_version","alias_value":"1307.4576v2","created_at":"2026-05-18T01:48:43.524751+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4576","created_at":"2026-05-18T01:48:43.524751+00:00"},{"alias_kind":"pith_short_12","alias_value":"AQOGNXTFPHQR","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_16","alias_value":"AQOGNXTFPHQRCXR5","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_8","alias_value":"AQOGNXTF","created_at":"2026-05-18T12:27:38.830355+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/AQOGNXTFPHQRCXR5SYOQA2J64M","json":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M.json","graph_json":"https://pith.science/api/pith-number/AQOGNXTFPHQRCXR5SYOQA2J64M/graph.json","events_json":"https://pith.science/api/pith-number/AQOGNXTFPHQRCXR5SYOQA2J64M/events.json","paper":"https://pith.science/paper/AQOGNXTF"},"agent_actions":{"view_html":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M","download_json":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M.json","view_paper":"https://pith.science/paper/AQOGNXTF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1307.4576&json=true","fetch_graph":"https://pith.science/api/pith-number/AQOGNXTFPHQRCXR5SYOQA2J64M/graph.json","fetch_events":"https://pith.science/api/pith-number/AQOGNXTFPHQRCXR5SYOQA2J64M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M/action/storage_attestation","attest_author":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M/action/author_attestation","sign_citation":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M/action/citation_signature","submit_replication":"https://pith.science/pith/AQOGNXTFPHQRCXR5SYOQA2J64M/action/replication_record"}},"created_at":"2026-05-18T01:48:43.524751+00:00","updated_at":"2026-05-18T01:48:43.524751+00:00"}