{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:PH4CEAGVDCMDKEOEF7XDDQEOIN","short_pith_number":"pith:PH4CEAGV","schema_version":"1.0","canonical_sha256":"79f82200d518983511c42fee31c08e43772b4142610f7cba84eebfcabb3079d8","source":{"kind":"arxiv","id":"1208.5050","version":1},"attestation_state":"computed","paper":{"title":"Comoving Space Density and Obscured Fraction of High-Redshift Active Galactic Nuclei in the Subaru/{\\it XMM-Newton} Deep Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"Kazuo Hiroi, Masayuki Akiyama, Mike G. Watson, Yoshihiro Ueda","submitted_at":"2012-08-24T20:00:02Z","abstract_excerpt":"We study the comoving space density of X-ray-selected luminous active galactic nuclei (AGNs) and the obscured AGN fraction at high redshifts ($3 < z < 5$) in the Subaru/{\\it XMM-Newton} Deep Survey (SXDS) field. From an X-ray source catalog with high completeness of optical identification thanks to deep optical images, we select a sample of 30 AGNs at $z > 3$ with intrinsic (de-absorbed and rest-frame 2--10 keV) luminosities of $L_{\\rm X} = 10^{44-45}$ erg s$^{-1}$ detected in the 0.5--2 keV band, consisting of 20 and 10 objects with spectroscopic and photometric redshifts, respectively. Utili"},"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":"1208.5050","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-24T20:00:02Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"517e01592feaf6bbd6fa2c19fdc8246c6a55dbacd42943487346153748ae3959","abstract_canon_sha256":"d73c2bdc6d8f0552bd820dc70bfc72323f8ef668575c6c37664b8113eee6c3a6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:58.464134Z","signature_b64":"FJIN8QTY2REXFOozRJb841rtTmcJyfIySu/ZM3EAhJ3twKuNYYgYYNDt7+DYS+K9g6BpR5m4hujMgoe9L57kBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79f82200d518983511c42fee31c08e43772b4142610f7cba84eebfcabb3079d8","last_reissued_at":"2026-05-18T01:54:58.463232Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:58.463232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Comoving Space Density and Obscured Fraction of High-Redshift Active Galactic Nuclei in the Subaru/{\\it XMM-Newton} Deep Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"Kazuo Hiroi, Masayuki Akiyama, Mike G. Watson, Yoshihiro Ueda","submitted_at":"2012-08-24T20:00:02Z","abstract_excerpt":"We study the comoving space density of X-ray-selected luminous active galactic nuclei (AGNs) and the obscured AGN fraction at high redshifts ($3 < z < 5$) in the Subaru/{\\it XMM-Newton} Deep Survey (SXDS) field. From an X-ray source catalog with high completeness of optical identification thanks to deep optical images, we select a sample of 30 AGNs at $z > 3$ with intrinsic (de-absorbed and rest-frame 2--10 keV) luminosities of $L_{\\rm X} = 10^{44-45}$ erg s$^{-1}$ detected in the 0.5--2 keV band, consisting of 20 and 10 objects with spectroscopic and photometric redshifts, respectively. Utili"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5050","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":"1208.5050","created_at":"2026-05-18T01:54:58.463398+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.5050v1","created_at":"2026-05-18T01:54:58.463398+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5050","created_at":"2026-05-18T01:54:58.463398+00:00"},{"alias_kind":"pith_short_12","alias_value":"PH4CEAGVDCMD","created_at":"2026-05-18T12:27:18.751474+00:00"},{"alias_kind":"pith_short_16","alias_value":"PH4CEAGVDCMDKEOE","created_at":"2026-05-18T12:27:18.751474+00:00"},{"alias_kind":"pith_short_8","alias_value":"PH4CEAGV","created_at":"2026-05-18T12:27:18.751474+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/PH4CEAGVDCMDKEOEF7XDDQEOIN","json":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN.json","graph_json":"https://pith.science/api/pith-number/PH4CEAGVDCMDKEOEF7XDDQEOIN/graph.json","events_json":"https://pith.science/api/pith-number/PH4CEAGVDCMDKEOEF7XDDQEOIN/events.json","paper":"https://pith.science/paper/PH4CEAGV"},"agent_actions":{"view_html":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN","download_json":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN.json","view_paper":"https://pith.science/paper/PH4CEAGV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.5050&json=true","fetch_graph":"https://pith.science/api/pith-number/PH4CEAGVDCMDKEOEF7XDDQEOIN/graph.json","fetch_events":"https://pith.science/api/pith-number/PH4CEAGVDCMDKEOEF7XDDQEOIN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN/action/storage_attestation","attest_author":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN/action/author_attestation","sign_citation":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN/action/citation_signature","submit_replication":"https://pith.science/pith/PH4CEAGVDCMDKEOEF7XDDQEOIN/action/replication_record"}},"created_at":"2026-05-18T01:54:58.463398+00:00","updated_at":"2026-05-18T01:54:58.463398+00:00"}