{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1995:QXC67OBOFKWJNCK2TKOIVAX7DF","short_pith_number":"pith:QXC67OBO","schema_version":"1.0","canonical_sha256":"85c5efb82e2aac96895a9a9c8a82ff195304f2eb0cdee326449368e1e7ac5d09","source":{"kind":"arxiv","id":"astro-ph/9502071","version":1},"attestation_state":"computed","paper":{"title":"GB1508+5714: a radio-loud quasar with z=4.30 and the space density of high redshift, radio--loud quasars.","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. R. Patnaik, C. Hazard, I. M. Hook, I. W. A. Browne, M. J. Irwin, P. N. Wilkinson, R. G. McMahon","submitted_at":"1995-02-14T09:38:35Z","abstract_excerpt":"We report the discovery of a radio loud quasar with a redshift of 4.30. This object, which is the first radio selected quasar with a redshift greater than four, was discovered during an observational investigation into the evolution of the luminosity function of radio loud quasars. Here we describe results based on a sample of ~300, flat spectrum radio sources with S(5GHz) > 200mJy. In this study, rather than carry out an indiscriminate redshift campaign on all the radio sources, we have used the APM POSS catalogue to preselect a subset of stellar-like optical counterparts with red optical col"},"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":"astro-ph/9502071","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-14T09:38:35Z","cross_cats_sorted":[],"title_canon_sha256":"8cc90d1759931065442846c512cb75ef5fde26aa22cc2ac40fb474fbbac30468","abstract_canon_sha256":"81ba409214041c3d8de8f0c62dd6741f44ff31867f5ad50bd1c98a733e04bd46"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:44.212142Z","signature_b64":"Gbh52DqyEBRc+HBPuuxyhVh1MIf3gQsutYyIX5BN2UAjbA/yR0Sc++db87siHDOXVuCDWkibasNlvLVDCaIkBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85c5efb82e2aac96895a9a9c8a82ff195304f2eb0cdee326449368e1e7ac5d09","last_reissued_at":"2026-05-18T01:12:44.211792Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:44.211792Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"GB1508+5714: a radio-loud quasar with z=4.30 and the space density of high redshift, radio--loud quasars.","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. R. Patnaik, C. Hazard, I. M. Hook, I. W. A. Browne, M. J. Irwin, P. N. Wilkinson, R. G. McMahon","submitted_at":"1995-02-14T09:38:35Z","abstract_excerpt":"We report the discovery of a radio loud quasar with a redshift of 4.30. This object, which is the first radio selected quasar with a redshift greater than four, was discovered during an observational investigation into the evolution of the luminosity function of radio loud quasars. Here we describe results based on a sample of ~300, flat spectrum radio sources with S(5GHz) > 200mJy. In this study, rather than carry out an indiscriminate redshift campaign on all the radio sources, we have used the APM POSS catalogue to preselect a subset of stellar-like optical counterparts with red optical col"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9502071","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":"astro-ph/9502071","created_at":"2026-05-18T01:12:44.211845+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9502071v1","created_at":"2026-05-18T01:12:44.211845+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9502071","created_at":"2026-05-18T01:12:44.211845+00:00"},{"alias_kind":"pith_short_12","alias_value":"QXC67OBOFKWJ","created_at":"2026-05-18T12:25:47.700082+00:00"},{"alias_kind":"pith_short_16","alias_value":"QXC67OBOFKWJNCK2","created_at":"2026-05-18T12:25:47.700082+00:00"},{"alias_kind":"pith_short_8","alias_value":"QXC67OBO","created_at":"2026-05-18T12:25:47.700082+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/QXC67OBOFKWJNCK2TKOIVAX7DF","json":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF.json","graph_json":"https://pith.science/api/pith-number/QXC67OBOFKWJNCK2TKOIVAX7DF/graph.json","events_json":"https://pith.science/api/pith-number/QXC67OBOFKWJNCK2TKOIVAX7DF/events.json","paper":"https://pith.science/paper/QXC67OBO"},"agent_actions":{"view_html":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF","download_json":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF.json","view_paper":"https://pith.science/paper/QXC67OBO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9502071&json=true","fetch_graph":"https://pith.science/api/pith-number/QXC67OBOFKWJNCK2TKOIVAX7DF/graph.json","fetch_events":"https://pith.science/api/pith-number/QXC67OBOFKWJNCK2TKOIVAX7DF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF/action/storage_attestation","attest_author":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF/action/author_attestation","sign_citation":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF/action/citation_signature","submit_replication":"https://pith.science/pith/QXC67OBOFKWJNCK2TKOIVAX7DF/action/replication_record"}},"created_at":"2026-05-18T01:12:44.211845+00:00","updated_at":"2026-05-18T01:12:44.211845+00:00"}