{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:247WCCGOBG2XGTHJLAGTCTEAXM","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":"9ba4774288d98def7e510b80a624f5a700f9851164a98a3bf15cd84698d9c5cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-08T17:33:46Z","title_canon_sha256":"92044bda32108740ae8a91b5dc3b3c6dce90f994711c24c94cb0577e9e0d4e91"},"schema_version":"1.0","source":{"id":"0904.1383","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.1383","created_at":"2026-07-04T15:47:17Z"},{"alias_kind":"arxiv_version","alias_value":"0904.1383v1","created_at":"2026-07-04T15:47:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.1383","created_at":"2026-07-04T15:47:17Z"},{"alias_kind":"pith_short_12","alias_value":"247WCCGOBG2X","created_at":"2026-07-04T15:47:17Z"},{"alias_kind":"pith_short_16","alias_value":"247WCCGOBG2XGTHJ","created_at":"2026-07-04T15:47:17Z"},{"alias_kind":"pith_short_8","alias_value":"247WCCGO","created_at":"2026-07-04T15:47:17Z"}],"graph_snapshots":[{"event_id":"sha256:8de899beaf36a4a4bba46bf7c8ad3b8e5ae93e78a2d18ff5fc895450876203b0","target":"graph","created_at":"2026-07-04T15:47:17Z","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/0904.1383/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Supermassive black hole binaries (SMBHBs) in galactic nuclei are thought to be a common by-product of major galaxy mergers. We use simple disk models for the circumbinary gas and for the binary-disk interaction to follow the orbital decay of SMBHBs with a range of total masses (M) and mass ratios (q), through physically distinct regions of the disk, until gravitational waves (GWs) take over their evolution. Prior to the GW-driven phase, the viscous decay is in the stalled \"secondary-dominated\" regime. SMBHBs spend a non-negligible fraction of 10^7 years at orbital periods t_var between a day a","authors_text":"Bence Kocsis (IAS, E\\\"otv\\\"os Lor\\'and University), Kristen Menou (Columbia University), Princeton; Harvard University;, Zolt\\'an Haiman (Columbia University)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-08T17:33:46Z","title":"The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.1383","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":"sha256:6af379f928c1fd8cdb7bb22e0be9b5c6b12dc30a01cd9e1cb896f02cf2b1ef67","target":"record","created_at":"2026-07-04T15:47:17Z","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":"9ba4774288d98def7e510b80a624f5a700f9851164a98a3bf15cd84698d9c5cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-08T17:33:46Z","title_canon_sha256":"92044bda32108740ae8a91b5dc3b3c6dce90f994711c24c94cb0577e9e0d4e91"},"schema_version":"1.0","source":{"id":"0904.1383","kind":"arxiv","version":1}},"canonical_sha256":"d73f6108ce09b5734ce9580d314c80bb3d0d0df1b7486b1028612d9c9d663f2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d73f6108ce09b5734ce9580d314c80bb3d0d0df1b7486b1028612d9c9d663f2d","first_computed_at":"2026-07-04T15:47:17.547007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:47:17.547007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mpgQ7/T7q6x9mLhZKTbcpwM63RZahIqHp5ZukWkZfmPYCMxtOS+aifgmFdni25oaxCQKFetUebO2qv8yYsF7BA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:47:17.547365Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.1383","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6af379f928c1fd8cdb7bb22e0be9b5c6b12dc30a01cd9e1cb896f02cf2b1ef67","sha256:8de899beaf36a4a4bba46bf7c8ad3b8e5ae93e78a2d18ff5fc895450876203b0"],"state_sha256":"4b65a9ee5245203baf24e10cdd7449f3483884a6462ad4b6a5ef5cf60b9762df"}