{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:PM435ZXEDQAKS57RQU4K5SJBLU","short_pith_number":"pith:PM435ZXE","schema_version":"1.0","canonical_sha256":"7b39bee6e41c00a977f18538aec9215d2f8b9f37557c232ff69a5adaf60ba8f4","source":{"kind":"arxiv","id":"astro-ph/9810170","version":1},"attestation_state":"computed","paper":{"title":"Radio-quiet QSO environments - I. The correlation of QSOs and bj<23 galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"S. M. Croom, T. Shanks (University of Durham)","submitted_at":"1998-10-11T15:15:52Z","abstract_excerpt":"In this paper we present results of an analysis of radio-quiet QSO environments. The aim is to determine the relation between QSOs and galaxies as a function of redshift. We cross-correlate a sample of ~150 QSOs from optically and X-ray selected catalogues with faint, bj<23, galaxies. These data allow us to probe the galaxy clustering environment of QSOs out to z~1.0-1.5. Far from giving a positive correlation, at z<1.5 the QSO-galaxy cross-correlation function is marginally negative, with w(theta<120'')=-0.027+-0.020. Colour information suggests that the anti-correlation is most significant b"},"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/9810170","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-10-11T15:15:52Z","cross_cats_sorted":[],"title_canon_sha256":"cecc990f83c5f2beaa16dadef64c234ae69bc336d347249dfc28ae4171e2e8a7","abstract_canon_sha256":"517b17553d4ff5a3da8bf42a1f133d8a37fa34c7c5193e84b192a37ed610e3c7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:07:05.838977Z","signature_b64":"q+NleieOO9t+qD4Bq5BXd8vqfkKRCLrwulC99NQKW6UF5pcPBRUVFLI8z0IPUumOzgVsOcMREqZg3CRR71uWAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b39bee6e41c00a977f18538aec9215d2f8b9f37557c232ff69a5adaf60ba8f4","last_reissued_at":"2026-07-04T16:07:05.838559Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:07:05.838559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Radio-quiet QSO environments - I. The correlation of QSOs and bj<23 galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"S. M. Croom, T. Shanks (University of Durham)","submitted_at":"1998-10-11T15:15:52Z","abstract_excerpt":"In this paper we present results of an analysis of radio-quiet QSO environments. The aim is to determine the relation between QSOs and galaxies as a function of redshift. We cross-correlate a sample of ~150 QSOs from optically and X-ray selected catalogues with faint, bj<23, galaxies. These data allow us to probe the galaxy clustering environment of QSOs out to z~1.0-1.5. Far from giving a positive correlation, at z<1.5 the QSO-galaxy cross-correlation function is marginally negative, with w(theta<120'')=-0.027+-0.020. Colour information suggests that the anti-correlation is most significant b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9810170","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/9810170/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/9810170","created_at":"2026-07-04T16:07:05.838638+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9810170v1","created_at":"2026-07-04T16:07:05.838638+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9810170","created_at":"2026-07-04T16:07:05.838638+00:00"},{"alias_kind":"pith_short_12","alias_value":"PM435ZXEDQAK","created_at":"2026-07-04T16:07:05.838638+00:00"},{"alias_kind":"pith_short_16","alias_value":"PM435ZXEDQAKS57R","created_at":"2026-07-04T16:07:05.838638+00:00"},{"alias_kind":"pith_short_8","alias_value":"PM435ZXE","created_at":"2026-07-04T16:07:05.838638+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1908.02372","citing_title":"A dominant population of optically invisible massive galaxies in the early Universe","ref_index":70,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU","json":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU.json","graph_json":"https://pith.science/api/pith-number/PM435ZXEDQAKS57RQU4K5SJBLU/graph.json","events_json":"https://pith.science/api/pith-number/PM435ZXEDQAKS57RQU4K5SJBLU/events.json","paper":"https://pith.science/paper/PM435ZXE"},"agent_actions":{"view_html":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU","download_json":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU.json","view_paper":"https://pith.science/paper/PM435ZXE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9810170&json=true","fetch_graph":"https://pith.science/api/pith-number/PM435ZXEDQAKS57RQU4K5SJBLU/graph.json","fetch_events":"https://pith.science/api/pith-number/PM435ZXEDQAKS57RQU4K5SJBLU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU/action/storage_attestation","attest_author":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU/action/author_attestation","sign_citation":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU/action/citation_signature","submit_replication":"https://pith.science/pith/PM435ZXEDQAKS57RQU4K5SJBLU/action/replication_record"}},"created_at":"2026-07-04T16:07:05.838638+00:00","updated_at":"2026-07-04T16:07:05.838638+00:00"}