{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:4MRCBASIIEVRLSOYU6U6ANL5EE","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":"df93fecd108407f2a6ec749261ade3f9f7b71c29438f6e09f2c5e41d6e21ea5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-05T21:00:12Z","title_canon_sha256":"17c669c67703e4e44645f882925f40285cde7c22dd469a478b31afcfc3bcd2dd"},"schema_version":"1.0","source":{"id":"1403.1257","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.1257","created_at":"2026-05-18T01:44:19Z"},{"alias_kind":"arxiv_version","alias_value":"1403.1257v2","created_at":"2026-05-18T01:44:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.1257","created_at":"2026-05-18T01:44:19Z"},{"alias_kind":"pith_short_12","alias_value":"4MRCBASIIEVR","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"4MRCBASIIEVRLSOY","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"4MRCBASI","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:ca3a8f37a38b73f584fdbbe29047994d46d99690c0dc68247a2ce24f11dc9bf5","target":"graph","created_at":"2026-05-18T01:44:19Z","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":"We employ cosmological hydrodynamical simulations to investigate the effects of AGN feedback on the formation of massive galaxies with present-day stellar masses of $M_{stel} = 8.8 \\times 10^{10} - 6.0 \\times 10^{11} M_{sun}$. Using smoothed particle hydrodynamics simulations with a pressure-entropy formulation that allows an improved treatment of contact discontinuities and fluid mixing, we run three sets of simulations of 20 halos with different AGN feedback models: (1) no feedback, (2) thermal feedback, and (3) mechanical and radiation feedback. We assume that seed black holes are present a","authors_text":"Benjamin P. Moster, Ena Choi, Jeremiah P. Ostriker, Ludwig Oser, Thorsten Naab","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-05T21:00:12Z","title":"The impact of mechanical AGN feedback on the formation of massive early-type galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.1257","kind":"arxiv","version":2},"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:df1f59c448e43bb773f2418105d2484a80ed6a908d06af5bee41fb7ac9ed9c51","target":"record","created_at":"2026-05-18T01:44:19Z","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":"df93fecd108407f2a6ec749261ade3f9f7b71c29438f6e09f2c5e41d6e21ea5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-05T21:00:12Z","title_canon_sha256":"17c669c67703e4e44645f882925f40285cde7c22dd469a478b31afcfc3bcd2dd"},"schema_version":"1.0","source":{"id":"1403.1257","kind":"arxiv","version":2}},"canonical_sha256":"e322208248412b15c9d8a7a9e0357d21128af13c20c87afd66911787bd0494a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e322208248412b15c9d8a7a9e0357d21128af13c20c87afd66911787bd0494a6","first_computed_at":"2026-05-18T01:44:19.341085Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:19.341085Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uYQThRFCX0VGSsOlGiewu2xocVOT9eFJ9nwwhyqaSebZyDQLDcEzLMMTPuRLZ8CGpDettc/Ij49utiD5mcUFAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:19.341907Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.1257","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df1f59c448e43bb773f2418105d2484a80ed6a908d06af5bee41fb7ac9ed9c51","sha256:ca3a8f37a38b73f584fdbbe29047994d46d99690c0dc68247a2ce24f11dc9bf5"],"state_sha256":"ffb555f45e294e5f544a0ec0283b97101d530d4b6b4c045db4a1ff44b028bdb0"}