{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZXAQDINSJLNI7ZX6L3JJZGJM4L","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":"8cedb177d07db9e93eac14d30457774e4049183dd96671f04d4d6e9f7126ef93","cross_cats_sorted":["astro-ph.CO","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-06-11T11:12:36Z","title_canon_sha256":"4c1a4c972c2137bce3c0bc769390d24fd49b1d3b890bb7e1c5ec0d6d065ac7bc"},"schema_version":"1.0","source":{"id":"1306.2488","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.2488","created_at":"2026-05-18T01:49:23Z"},{"alias_kind":"arxiv_version","alias_value":"1306.2488v1","created_at":"2026-05-18T01:49:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.2488","created_at":"2026-05-18T01:49:23Z"},{"alias_kind":"pith_short_12","alias_value":"ZXAQDINSJLNI","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZXAQDINSJLNI7ZX6","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZXAQDINS","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:7230c53e6fa1fe15c09ab889937f864cdea5933b95a272bfcd818f2a3e370ff2","target":"graph","created_at":"2026-05-18T01:49:23Z","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 present an extension of the code ProDiMo that allows for a modeling of processes pertinent to active galactic nuclei and to an ambient chemistry that is time dependent. We present a proof-of-concept and focus on a few astrophysically relevant species, e.g., H+, H2+ and H3+; C+ and N+; C and O; CO and H2O; OH+, H2O+ and H3O+; HCN and HCO+. We find that the freeze-out of water is strongly suppressed and that this affects the bulk of the oxygen and carbon chemistry occurring in AGN. The commonly used AGN tracer HCN/HCO+ is strongly time-dependent, with ratios that vary over orders of magnitude","authors_text":"Giambattista Aresu, Inga Kamp, Marco Spaans, Peter Woitke, Rowin Meijerink, Wing-Fai Thi","cross_cats":["astro-ph.CO","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-06-11T11:12:36Z","title":"Tracing the Physical Conditions in Active Galactic Nuclei with Time-Dependent Chemistry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2488","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":"sha256:921eb9ac6e92f906fe9bbf5e45a166939248832f2f43f08dd253ebf728daaaec","target":"record","created_at":"2026-05-18T01:49:23Z","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":"8cedb177d07db9e93eac14d30457774e4049183dd96671f04d4d6e9f7126ef93","cross_cats_sorted":["astro-ph.CO","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-06-11T11:12:36Z","title_canon_sha256":"4c1a4c972c2137bce3c0bc769390d24fd49b1d3b890bb7e1c5ec0d6d065ac7bc"},"schema_version":"1.0","source":{"id":"1306.2488","kind":"arxiv","version":1}},"canonical_sha256":"cdc101a1b24ada8fe6fe5ed29c992ce2eef661cffd0cee5f2a71720a35982471","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cdc101a1b24ada8fe6fe5ed29c992ce2eef661cffd0cee5f2a71720a35982471","first_computed_at":"2026-05-18T01:49:23.753499Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:23.753499Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kDWdYookJN9/Agu5OM/cicqUGYw/L24qRn8ApL16/l3F01nDFsifDuDgUqEtBQhrl68SJ/Kou8FGEOuZJWDvAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:23.754167Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.2488","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:921eb9ac6e92f906fe9bbf5e45a166939248832f2f43f08dd253ebf728daaaec","sha256:7230c53e6fa1fe15c09ab889937f864cdea5933b95a272bfcd818f2a3e370ff2"],"state_sha256":"5940dc0c34f1a7f503b0e6ca1c524fafd47f86e13fa3531629d9a305f1aaa77a"}