{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:STUNUTGBIPKWUZJMXPAV4ZJDEB","short_pith_number":"pith:STUNUTGB","canonical_record":{"source":{"id":"2311.18548","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-30T13:32:54Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"466f845d7c840cf185c355d30de16eae66cdb5a31fdb8e59a47f6c6c6b648417","abstract_canon_sha256":"55d9cd1b46a0ad8261f5b4fc6c8a56ef1e9271c08e974dddbc68af847297ae77"},"schema_version":"1.0"},"canonical_sha256":"94e8da4cc143d56a652cbbc15e652320483b825c526fae13873bb9069b2f4394","source":{"kind":"arxiv","id":"2311.18548","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.18548","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"arxiv_version","alias_value":"2311.18548v1","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.18548","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"pith_short_12","alias_value":"STUNUTGBIPKW","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"pith_short_16","alias_value":"STUNUTGBIPKWUZJM","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"pith_short_8","alias_value":"STUNUTGB","created_at":"2026-07-05T11:48:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:STUNUTGBIPKWUZJMXPAV4ZJDEB","target":"record","payload":{"canonical_record":{"source":{"id":"2311.18548","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-30T13:32:54Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"466f845d7c840cf185c355d30de16eae66cdb5a31fdb8e59a47f6c6c6b648417","abstract_canon_sha256":"55d9cd1b46a0ad8261f5b4fc6c8a56ef1e9271c08e974dddbc68af847297ae77"},"schema_version":"1.0"},"canonical_sha256":"94e8da4cc143d56a652cbbc15e652320483b825c526fae13873bb9069b2f4394","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:48:44.933815Z","signature_b64":"ZAoWfxsSVIgUg0N0QsXEnmUqn7QzAxE4XAuT6sWTusJ+zdeChnqZUHSFI/yFb/uMwcbzOQ/qnfzH5rOTvRHJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94e8da4cc143d56a652cbbc15e652320483b825c526fae13873bb9069b2f4394","last_reissued_at":"2026-07-05T11:48:44.933358Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:48:44.933358Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2311.18548","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:48:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8qERHlaKFSU+l5HLlJjtMo/v88VYqD0wo7PkviH2Y023ZqGCd7kmKHJCG1FoPfd038hmXV6Z5qMHS6O/qWcGDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:17:01.156966Z"},"content_sha256":"5434b7c4a3ed91099e522b6a6d58edb2e02dc06bb3c4dc1f76e40d02c01e95e4","schema_version":"1.0","event_id":"sha256:5434b7c4a3ed91099e522b6a6d58edb2e02dc06bb3c4dc1f76e40d02c01e95e4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:STUNUTGBIPKWUZJMXPAV4ZJDEB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impact of gas hardening on the population properties of hierarchical black hole mergers in AGN disks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Carole P\\'erigois, Dario Barone, Giuliano Iorio, Marco Dall'Amico, M. Celeste Artale, Michela Mapelli, M. Paola Vaccaro, Stefano Torniamenti","submitted_at":"2023-11-30T13:32:54Z","abstract_excerpt":"Hierarchical black hole (BH) mergers in active galactic nuclei (AGNs) are unique among formation channels of binary black holes (BBHs) because they are likely associated with electromagnetic counterparts and can efficiently lead to the mass growth of BHs. Here, we explore the impact of gas accretion and migration traps on the evolution of BBHs in AGNs. We have developed a new fast semi-analytic model, which allows us to explore the parameter space while capturing the main physical processes involved. We find that effective exchange of energy and angular momentum between the BBH and the surroun"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.18548","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2311.18548/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:48:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"df767K1wCwoHDEANIuGzSuobFqTnVNAvQ/QPjrHY3P8TqUiTEmTpE+fekt9sUAO3vF5ALN/DFBt1tQ8xFneNBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:17:01.157468Z"},"content_sha256":"7b5aa2a6a4b7d0b3d03fd995cba41929344f4806cc3b2b5a29deca48a6dd9bdd","schema_version":"1.0","event_id":"sha256:7b5aa2a6a4b7d0b3d03fd995cba41929344f4806cc3b2b5a29deca48a6dd9bdd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB/bundle.json","state_url":"https://pith.science/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T13:17:01Z","links":{"resolver":"https://pith.science/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB","bundle":"https://pith.science/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB/bundle.json","state":"https://pith.science/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/STUNUTGBIPKWUZJMXPAV4ZJDEB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:STUNUTGBIPKWUZJMXPAV4ZJDEB","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":"55d9cd1b46a0ad8261f5b4fc6c8a56ef1e9271c08e974dddbc68af847297ae77","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-30T13:32:54Z","title_canon_sha256":"466f845d7c840cf185c355d30de16eae66cdb5a31fdb8e59a47f6c6c6b648417"},"schema_version":"1.0","source":{"id":"2311.18548","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.18548","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"arxiv_version","alias_value":"2311.18548v1","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.18548","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"pith_short_12","alias_value":"STUNUTGBIPKW","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"pith_short_16","alias_value":"STUNUTGBIPKWUZJM","created_at":"2026-07-05T11:48:44Z"},{"alias_kind":"pith_short_8","alias_value":"STUNUTGB","created_at":"2026-07-05T11:48:44Z"}],"graph_snapshots":[{"event_id":"sha256:7b5aa2a6a4b7d0b3d03fd995cba41929344f4806cc3b2b5a29deca48a6dd9bdd","target":"graph","created_at":"2026-07-05T11:48:44Z","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/2311.18548/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hierarchical black hole (BH) mergers in active galactic nuclei (AGNs) are unique among formation channels of binary black holes (BBHs) because they are likely associated with electromagnetic counterparts and can efficiently lead to the mass growth of BHs. Here, we explore the impact of gas accretion and migration traps on the evolution of BBHs in AGNs. We have developed a new fast semi-analytic model, which allows us to explore the parameter space while capturing the main physical processes involved. We find that effective exchange of energy and angular momentum between the BBH and the surroun","authors_text":"Carole P\\'erigois, Dario Barone, Giuliano Iorio, Marco Dall'Amico, M. Celeste Artale, Michela Mapelli, M. Paola Vaccaro, Stefano Torniamenti","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-30T13:32:54Z","title":"Impact of gas hardening on the population properties of hierarchical black hole mergers in AGN disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.18548","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":"sha256:5434b7c4a3ed91099e522b6a6d58edb2e02dc06bb3c4dc1f76e40d02c01e95e4","target":"record","created_at":"2026-07-05T11:48:44Z","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":"55d9cd1b46a0ad8261f5b4fc6c8a56ef1e9271c08e974dddbc68af847297ae77","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-30T13:32:54Z","title_canon_sha256":"466f845d7c840cf185c355d30de16eae66cdb5a31fdb8e59a47f6c6c6b648417"},"schema_version":"1.0","source":{"id":"2311.18548","kind":"arxiv","version":1}},"canonical_sha256":"94e8da4cc143d56a652cbbc15e652320483b825c526fae13873bb9069b2f4394","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94e8da4cc143d56a652cbbc15e652320483b825c526fae13873bb9069b2f4394","first_computed_at":"2026-07-05T11:48:44.933358Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:48:44.933358Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZAoWfxsSVIgUg0N0QsXEnmUqn7QzAxE4XAuT6sWTusJ+zdeChnqZUHSFI/yFb/uMwcbzOQ/qnfzH5rOTvRHJDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:48:44.933815Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.18548","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5434b7c4a3ed91099e522b6a6d58edb2e02dc06bb3c4dc1f76e40d02c01e95e4","sha256:7b5aa2a6a4b7d0b3d03fd995cba41929344f4806cc3b2b5a29deca48a6dd9bdd"],"state_sha256":"40158a2b7c5557dab8b6d7f527193a26723b42ee4e6d0947cef1fa45c16e1d4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cC+LirL8n6/Nq8y5xoATqjIa4pQYbmFEBHGNuaMl3BBlIrMrvxKxnqd72cq9JImKkpU9IC4k7rvzXBOrzu6cBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T13:17:01.162277Z","bundle_sha256":"b8ef93a17be676cea2e93c732ffae2d027c7f9d3fb4776691ec01fe7cbf648d6"}}