{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:VKIJIG2ZT4KVOOCTJM76AEPQ7P","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":"fc48b5546f88b9fcd7ab52e77725b6d0cd3cab6b2ebda0a87dbbf58c3c43e1b9","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-16T20:18:57Z","title_canon_sha256":"551e1bb53763e93916f4f028990662e0a8ade3d088ad23932039a9ebd0bf58b3"},"schema_version":"1.0","source":{"id":"astro-ph/0506398","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0506398","created_at":"2026-07-04T15:19:35Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0506398v3","created_at":"2026-07-04T15:19:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0506398","created_at":"2026-07-04T15:19:35Z"},{"alias_kind":"pith_short_12","alias_value":"VKIJIG2ZT4KV","created_at":"2026-07-04T15:19:35Z"},{"alias_kind":"pith_short_16","alias_value":"VKIJIG2ZT4KVOOCT","created_at":"2026-07-04T15:19:35Z"},{"alias_kind":"pith_short_8","alias_value":"VKIJIG2Z","created_at":"2026-07-04T15:19:35Z"}],"graph_snapshots":[{"event_id":"sha256:108dbc2d8ba2e4a045e7fa18eea107fd4e16e501997921eec365c8639688499d","target":"graph","created_at":"2026-07-04T15:19:35Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0506398/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an evolutionary model for starbursts, quasars, and spheroidal galaxies in which mergers between gas-rich galaxies drive nuclear inflows of gas, producing intense starbursts and feeding the buried growth of supermassive black holes (BHs) until feedback expels gas and renders a briefly visible optical quasar. The quasar lifetime and obscuring column density depend on both the instantaneous and peak luminosity of the quasar, and we determine this dependence using a large set of simulations of galaxy mergers varying host galaxy properties, orbital geometry, and gas physics. We use these","authors_text":"(2) Carnegie-Mellon, (3) MPA Garching), Brant Robertson (1), Lars Hernquist (1), Philip F. Hopkins (1), Thomas J. Cox (1), Tiziana Di Matteo (2), Volker Springel (3) ((1) Harvard-Smithsonian Center for Astrophysics","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-06-16T20:18:57Z","title":"A Unified, Merger-Driven Model for the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes and Galaxy Spheroids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0506398","kind":"arxiv","version":3},"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":"sha256:56ae739a16283ef4fb78870207710c68d40e44ec6a1e68a954722c06b535c45d","target":"record","created_at":"2026-07-04T15:19:35Z","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":"fc48b5546f88b9fcd7ab52e77725b6d0cd3cab6b2ebda0a87dbbf58c3c43e1b9","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-16T20:18:57Z","title_canon_sha256":"551e1bb53763e93916f4f028990662e0a8ade3d088ad23932039a9ebd0bf58b3"},"schema_version":"1.0","source":{"id":"astro-ph/0506398","kind":"arxiv","version":3}},"canonical_sha256":"aa90941b599f155738534b3fe011f0fbf1877ac46b2fd13df9279aea11d5777b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa90941b599f155738534b3fe011f0fbf1877ac46b2fd13df9279aea11d5777b","first_computed_at":"2026-07-04T15:19:35.365496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:19:35.365496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cci71jWpkrLkswJhMBJnt+set8DGssot8ykYCrBvnHtTx6cSTn52CKem53zzPlUnoMDe8OeUSpzzxagWmO4mCw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:19:35.365923Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0506398","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56ae739a16283ef4fb78870207710c68d40e44ec6a1e68a954722c06b535c45d","sha256:108dbc2d8ba2e4a045e7fa18eea107fd4e16e501997921eec365c8639688499d"],"state_sha256":"5d27790eab2eaab824ab0a98ffe55f01e2c311e3978323e1c399d9213cb3e3d2"}