{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2001:3ZNDEQNNXLFD4Z4LTGRBDAY5QO","short_pith_number":"pith:3ZNDEQNN","schema_version":"1.0","canonical_sha256":"de5a3241adbaca3e678b99a211831d8393ac8ceeb0dd6c78ca40c53ace4852cb","source":{"kind":"arxiv","id":"astro-ph/0112141","version":1},"attestation_state":"computed","paper":{"title":"Associated absorption in radio quasars. I. C IV absorption and the growth of radio sources","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E. de Silva, J.C. Baker, M.D. Lehnert, P.D. Barthel, R.D.E. Saunders, R.M. Athreya, R.W. Hunstead","submitted_at":"2001-12-06T13:30:14Z","abstract_excerpt":"We assess the global properties of associated C IV 1548,1550 absorption lines measured in the spectra of radio-loud quasars drawn from a near-complete, low-frequency selected sample. The observations span restframe C IV in two redshift ranges -- 0.7<z<1.0 and 1.5<z<3.0 -- which were targetted in the UV with HST/STIS and in the optical with ground-based telescopes, respectively. First, we corroborate trends for C IV associated absorption to be found preferentially in steep-spectrum and lobe-dominated quasars, implying the absorbing material tends to lie away from the radio-jet axis. Furthermore"},"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/0112141","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-12-06T13:30:14Z","cross_cats_sorted":[],"title_canon_sha256":"6df81e89012f085115be763ab8372b98af1956594ebfbc94a615a658a6932360","abstract_canon_sha256":"3ec007b1cb307e35d589276ec77f72f24d0eef8ac02195550bbf6b31d8fa3bc7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:24:43.357871Z","signature_b64":"0SrGh/qcxpfZTtYQsJhurlFP8HlafyLsRDYDYXAII8tj60gdn/bLA5fEl+Yd1eBVohgKUE5sfS57BQKJC5jdAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de5a3241adbaca3e678b99a211831d8393ac8ceeb0dd6c78ca40c53ace4852cb","last_reissued_at":"2026-07-04T16:24:43.357451Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:24:43.357451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Associated absorption in radio quasars. I. C IV absorption and the growth of radio sources","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E. de Silva, J.C. Baker, M.D. Lehnert, P.D. Barthel, R.D.E. Saunders, R.M. Athreya, R.W. Hunstead","submitted_at":"2001-12-06T13:30:14Z","abstract_excerpt":"We assess the global properties of associated C IV 1548,1550 absorption lines measured in the spectra of radio-loud quasars drawn from a near-complete, low-frequency selected sample. The observations span restframe C IV in two redshift ranges -- 0.7<z<1.0 and 1.5<z<3.0 -- which were targetted in the UV with HST/STIS and in the optical with ground-based telescopes, respectively. First, we corroborate trends for C IV associated absorption to be found preferentially in steep-spectrum and lobe-dominated quasars, implying the absorbing material tends to lie away from the radio-jet axis. Furthermore"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0112141","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0112141/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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/0112141","created_at":"2026-07-04T16:24:43.357508+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0112141v1","created_at":"2026-07-04T16:24:43.357508+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0112141","created_at":"2026-07-04T16:24:43.357508+00:00"},{"alias_kind":"pith_short_12","alias_value":"3ZNDEQNNXLFD","created_at":"2026-07-04T16:24:43.357508+00:00"},{"alias_kind":"pith_short_16","alias_value":"3ZNDEQNNXLFD4Z4L","created_at":"2026-07-04T16:24:43.357508+00:00"},{"alias_kind":"pith_short_8","alias_value":"3ZNDEQNN","created_at":"2026-07-04T16:24:43.357508+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/3ZNDEQNNXLFD4Z4LTGRBDAY5QO","json":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO.json","graph_json":"https://pith.science/api/pith-number/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/graph.json","events_json":"https://pith.science/api/pith-number/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/events.json","paper":"https://pith.science/paper/3ZNDEQNN"},"agent_actions":{"view_html":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO","download_json":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO.json","view_paper":"https://pith.science/paper/3ZNDEQNN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0112141&json=true","fetch_graph":"https://pith.science/api/pith-number/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/graph.json","fetch_events":"https://pith.science/api/pith-number/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/action/storage_attestation","attest_author":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/action/author_attestation","sign_citation":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/action/citation_signature","submit_replication":"https://pith.science/pith/3ZNDEQNNXLFD4Z4LTGRBDAY5QO/action/replication_record"}},"created_at":"2026-07-04T16:24:43.357508+00:00","updated_at":"2026-07-04T16:24:43.357508+00:00"}