{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:PUASJXRJAC4RZHUIELAFLMH2HD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"547c37f8d9163d5a8c799ad2434964f6f1ca9092d9163d9df35cb2b356f8b2a7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-18T13:49:59Z","title_canon_sha256":"f94b9556209f61a17dd90cbe4f5705d068ede06e0b7a34baf6104c418b328c95"},"schema_version":"1.0","source":{"id":"0812.3402","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.3402","created_at":"2026-05-18T02:35:08Z"},{"alias_kind":"arxiv_version","alias_value":"0812.3402v1","created_at":"2026-05-18T02:35:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.3402","created_at":"2026-05-18T02:35:08Z"},{"alias_kind":"pith_short_12","alias_value":"PUASJXRJAC4R","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"PUASJXRJAC4RZHUI","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"PUASJXRJ","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:7b66dda6c3e499431b8d7b6ee82d2d3f6a1ed4402e4c43b2930c07beb6457b02","target":"graph","created_at":"2026-05-18T02:35:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The impact of environment on AGN activity up to z~1 is assessed by utilizing a mass-selected sample of galaxies from the 10k catalog of the zCOSMOS spectroscopic redshift survey. We identify 147 AGN by their X-ray emission as detected by XMM-Newton from a parent sample of 7234 galaxies. We measure the fraction of galaxies with stellar mass M_*>2.5x10^10 Msun that host an AGN as a function of local overdensity using the 5th, 10th and 20th nearest neighbors that cover a range of physical scales (~1-4 Mpc). Overall, we find that AGNs prefer to reside in environments equivalent to massive galaxies","authors_text":"A. Bongiorno, A. Cappi, A. Comastri, A. Finoguenov, A. Iovino, B. Garilli, B. Meneux, C. Knobel, C. Maier, C. Marinoni, C. M.Carollo, C. Porciani, C. Vignali, D. Bottini, D. Vergani, E. Perez Montero, E. Ricciardelli, E. Zucca, F. Civano, F. Fiore, F. Lamareille, G. Coppa, G. Hasinger, G. Zamorani, H. Brunner, H. J. McCracken, J.D. Silverman, J. -F. Le Borgne, J. -P. Kneib, K. Caputi, K. Jahnke, K. Kovac, L. de Ravel, L. Tasca, L. Tresse, M. Bolzonella, M. Brusa, M. Elvis, M. Fumana, M. Mignoli, M. Salvato, M. Scodeggio, M. Tanaka, N. Cappelluti, O. Cucciati, O. Le Fevre, P. Cassata, P. Franzetti, P. Kampczyk, P. Memeo, P. Oesch, R. Gilli, R. Griffiths, R. Pello, S. Bardelli, S. de la Torre, S. Lilly, T. Contini, V. Le Brun, V. Mainieri, Y. Peng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-18T13:49:59Z","title":"The Environments of Active Galactic Nuclei within the zCOSMOS Density Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.3402","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:02f222b82b772ea3444708a0d557c84430fb90d47e27e445ec3a700dd31a7738","target":"record","created_at":"2026-05-18T02:35:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"547c37f8d9163d5a8c799ad2434964f6f1ca9092d9163d9df35cb2b356f8b2a7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-18T13:49:59Z","title_canon_sha256":"f94b9556209f61a17dd90cbe4f5705d068ede06e0b7a34baf6104c418b328c95"},"schema_version":"1.0","source":{"id":"0812.3402","kind":"arxiv","version":1}},"canonical_sha256":"7d0124de2900b91c9e8822c055b0fa38d376f00dd2aa8ed24157955131c5219f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d0124de2900b91c9e8822c055b0fa38d376f00dd2aa8ed24157955131c5219f","first_computed_at":"2026-05-18T02:35:08.712329Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:08.712329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vbu3xcr1j1DC9Bsgj+SGQt0d8XlhyFbrGCdC7QQIBTxmy5KRtVds2Hzi+wlN4Ej81zZrBpfN1eNIxBtuw2K7CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:08.712926Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.3402","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:02f222b82b772ea3444708a0d557c84430fb90d47e27e445ec3a700dd31a7738","sha256:7b66dda6c3e499431b8d7b6ee82d2d3f6a1ed4402e4c43b2930c07beb6457b02"],"state_sha256":"7375be2a0be86abff48a945f6d9c79eaeb9cfb65224fe2e6b89fe436c910b8b7"}