{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:PJSNIRAOHGAN52DHL3XW5VFMC7","short_pith_number":"pith:PJSNIRAO","schema_version":"1.0","canonical_sha256":"7a64d4440e3980dee8675eef6ed4ac17caecf40acad63598108e723621a5e5c2","source":{"kind":"arxiv","id":"1409.1218","version":1},"attestation_state":"computed","paper":{"title":"Why z > 1 radio-loud galaxies are commonly located in proto-clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Galametz, A.H. Gonzalez, A. Mortlock, C. De Breuck, D. Stern, D. Wylezalek, J.A. Stevens, J.D. Kurk, M.J. Jarvis, N.A. Hatch, N. Seymour, W.G. Hartley","submitted_at":"2014-09-03T20:00:03Z","abstract_excerpt":"Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in proto-clusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, which preferentially reside in rich environments. We compare the environments of powerful RLAGN at 1.3 < z < 3.2 from the CARLA survey to a sample of radio-quiet galaxies matched in mass and redshift. We find the environments of RLAGN are significantly denser than those of radio-quiet galaxies, implying that not more than 50% of massive galaxies in this epoch can host pow"},"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":"1409.1218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-03T20:00:03Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"95d47cb1f58caea0fd351a8b3bd55df68c292eb388aa9c7700544fe985d2f4e9","abstract_canon_sha256":"c2347581ed75c9107ddef09d3a3ba817084cae36a255623887eb71330ea2d78e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:08.458763Z","signature_b64":"EI4maRcftOw2EjHd+QfBpzMBh+9V0yKB56a+wXiTxw/AfayQdbfNUhnJePjt1ad34fMmyB4h06H6LnlZK/J9Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a64d4440e3980dee8675eef6ed4ac17caecf40acad63598108e723621a5e5c2","last_reissued_at":"2026-05-18T01:42:08.458054Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:08.458054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Why z > 1 radio-loud galaxies are commonly located in proto-clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Galametz, A.H. Gonzalez, A. Mortlock, C. De Breuck, D. Stern, D. Wylezalek, J.A. Stevens, J.D. Kurk, M.J. Jarvis, N.A. Hatch, N. Seymour, W.G. Hartley","submitted_at":"2014-09-03T20:00:03Z","abstract_excerpt":"Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in proto-clusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, which preferentially reside in rich environments. We compare the environments of powerful RLAGN at 1.3 < z < 3.2 from the CARLA survey to a sample of radio-quiet galaxies matched in mass and redshift. We find the environments of RLAGN are significantly denser than those of radio-quiet galaxies, implying that not more than 50% of massive galaxies in this epoch can host pow"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.1218","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":"1409.1218","created_at":"2026-05-18T01:42:08.458169+00:00"},{"alias_kind":"arxiv_version","alias_value":"1409.1218v1","created_at":"2026-05-18T01:42:08.458169+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.1218","created_at":"2026-05-18T01:42:08.458169+00:00"},{"alias_kind":"pith_short_12","alias_value":"PJSNIRAOHGAN","created_at":"2026-05-18T12:28:43.426989+00:00"},{"alias_kind":"pith_short_16","alias_value":"PJSNIRAOHGAN52DH","created_at":"2026-05-18T12:28:43.426989+00:00"},{"alias_kind":"pith_short_8","alias_value":"PJSNIRAO","created_at":"2026-05-18T12:28:43.426989+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/PJSNIRAOHGAN52DHL3XW5VFMC7","json":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7.json","graph_json":"https://pith.science/api/pith-number/PJSNIRAOHGAN52DHL3XW5VFMC7/graph.json","events_json":"https://pith.science/api/pith-number/PJSNIRAOHGAN52DHL3XW5VFMC7/events.json","paper":"https://pith.science/paper/PJSNIRAO"},"agent_actions":{"view_html":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7","download_json":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7.json","view_paper":"https://pith.science/paper/PJSNIRAO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1409.1218&json=true","fetch_graph":"https://pith.science/api/pith-number/PJSNIRAOHGAN52DHL3XW5VFMC7/graph.json","fetch_events":"https://pith.science/api/pith-number/PJSNIRAOHGAN52DHL3XW5VFMC7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7/action/storage_attestation","attest_author":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7/action/author_attestation","sign_citation":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7/action/citation_signature","submit_replication":"https://pith.science/pith/PJSNIRAOHGAN52DHL3XW5VFMC7/action/replication_record"}},"created_at":"2026-05-18T01:42:08.458169+00:00","updated_at":"2026-05-18T01:42:08.458169+00:00"}