{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:6ZQTUMZSDKMCP2E6ROWJUBPK7I","short_pith_number":"pith:6ZQTUMZS","canonical_record":{"source":{"id":"2002.04037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-10T19:00:01Z","cross_cats_sorted":["astro-ph.HE","gr-qc"],"title_canon_sha256":"abd2dc59a7a2d5bd87813dd94686ae324ec12b9d9cdf4d2e12a4f580cbbc6174","abstract_canon_sha256":"956aa4e6e84c10b92092fe806f0bf4fa1fa59744072af80a70330afb6199f136"},"schema_version":"1.0"},"canonical_sha256":"f6613a33321a9827e89e8bac9a05eafa2421e1fae58fb7aba6862ee4c9c25084","source":{"kind":"arxiv","id":"2002.04037","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.04037","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"arxiv_version","alias_value":"2002.04037v1","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.04037","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"pith_short_12","alias_value":"6ZQTUMZSDKMC","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"pith_short_16","alias_value":"6ZQTUMZSDKMCP2E6","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"pith_short_8","alias_value":"6ZQTUMZS","created_at":"2026-07-05T00:48:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:6ZQTUMZSDKMCP2E6ROWJUBPK7I","target":"record","payload":{"canonical_record":{"source":{"id":"2002.04037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-10T19:00:01Z","cross_cats_sorted":["astro-ph.HE","gr-qc"],"title_canon_sha256":"abd2dc59a7a2d5bd87813dd94686ae324ec12b9d9cdf4d2e12a4f580cbbc6174","abstract_canon_sha256":"956aa4e6e84c10b92092fe806f0bf4fa1fa59744072af80a70330afb6199f136"},"schema_version":"1.0"},"canonical_sha256":"f6613a33321a9827e89e8bac9a05eafa2421e1fae58fb7aba6862ee4c9c25084","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:48:02.609158Z","signature_b64":"/Vt6Z4MbVmD8AzjB2w/LUG3hs2QCbssNqW5zE4fZW5l0lVaI6CsCUrukffbOeJVDgjrGtNQcK85X+DxXha1yAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6613a33321a9827e89e8bac9a05eafa2421e1fae58fb7aba6862ee4c9c25084","last_reissued_at":"2026-07-05T00:48:02.608655Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:48:02.608655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.04037","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":"2026-07-05T00:48:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvErbvZ0VY6nJ6r6/oTl5POP56Gdas2XcFkdZ4Wxc0quw1ZbWyP/L/SagcliYvC47Ma2E6yEFjrM+pO2PZ+4BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T11:37:57.076426Z"},"content_sha256":"ea75ec3cc1ff5d99df3c7db85e005be987c01ee9e42aeb1b84c1bf22e831d61e","schema_version":"1.0","event_id":"sha256:ea75ec3cc1ff5d99df3c7db85e005be987c01ee9e42aeb1b84c1bf22e831d61e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:6ZQTUMZSDKMCP2E6ROWJUBPK7I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Birth, life, and death of black hole binaries around supermassive black holes: dynamical evolution of gravitational wave sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc"],"primary_cat":"astro-ph.GA","authors_text":"Manuel Arca Sedda","submitted_at":"2020-02-10T19:00:01Z","abstract_excerpt":"In this paper, we explore the mechanisms that regulate the formation and evolution of stellar black hole binaries (BHBs) around supermassive black holes (SMBHs). We show that dynamical interactions can efficiently drive \"in-situ\" BHB formation if the SMBH is surrounded by a massive nuclear cluster (NC), while orbitally segregated star clusters can replenish the BHB reservoir in SMBH-dominated nuclei. We discuss how the combined action of stellar hardening and mass segregation sculpts the BHB orbital properties. We use direct N-body simulations including post-Newtonian corrections up to 2.5 ord"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.04037","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/2002.04037/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":"2026-07-05T00:48:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DVWUiOst/BFvFX4/bj/9xq6jq5YI9sgPntX8P/J9WHGmUMoTW+JhMyKVC7jEGDdD5n+ENS3D92kmhL+8kCOCBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T11:37:57.076949Z"},"content_sha256":"4e009dfefd04268400e778f4e165a7aaf2a86c11390c6a6e828e2a7cd14a5d70","schema_version":"1.0","event_id":"sha256:4e009dfefd04268400e778f4e165a7aaf2a86c11390c6a6e828e2a7cd14a5d70"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I/bundle.json","state_url":"https://pith.science/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I/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":"2026-08-22T11:37:57Z","links":{"resolver":"https://pith.science/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I","bundle":"https://pith.science/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I/bundle.json","state":"https://pith.science/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZQTUMZSDKMCP2E6ROWJUBPK7I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:6ZQTUMZSDKMCP2E6ROWJUBPK7I","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":"956aa4e6e84c10b92092fe806f0bf4fa1fa59744072af80a70330afb6199f136","cross_cats_sorted":["astro-ph.HE","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-10T19:00:01Z","title_canon_sha256":"abd2dc59a7a2d5bd87813dd94686ae324ec12b9d9cdf4d2e12a4f580cbbc6174"},"schema_version":"1.0","source":{"id":"2002.04037","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.04037","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"arxiv_version","alias_value":"2002.04037v1","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.04037","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"pith_short_12","alias_value":"6ZQTUMZSDKMC","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"pith_short_16","alias_value":"6ZQTUMZSDKMCP2E6","created_at":"2026-07-05T00:48:02Z"},{"alias_kind":"pith_short_8","alias_value":"6ZQTUMZS","created_at":"2026-07-05T00:48:02Z"}],"graph_snapshots":[{"event_id":"sha256:4e009dfefd04268400e778f4e165a7aaf2a86c11390c6a6e828e2a7cd14a5d70","target":"graph","created_at":"2026-07-05T00:48:02Z","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/2002.04037/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we explore the mechanisms that regulate the formation and evolution of stellar black hole binaries (BHBs) around supermassive black holes (SMBHs). We show that dynamical interactions can efficiently drive \"in-situ\" BHB formation if the SMBH is surrounded by a massive nuclear cluster (NC), while orbitally segregated star clusters can replenish the BHB reservoir in SMBH-dominated nuclei. We discuss how the combined action of stellar hardening and mass segregation sculpts the BHB orbital properties. We use direct N-body simulations including post-Newtonian corrections up to 2.5 ord","authors_text":"Manuel Arca Sedda","cross_cats":["astro-ph.HE","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-10T19:00:01Z","title":"Birth, life, and death of black hole binaries around supermassive black holes: dynamical evolution of gravitational wave sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.04037","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:ea75ec3cc1ff5d99df3c7db85e005be987c01ee9e42aeb1b84c1bf22e831d61e","target":"record","created_at":"2026-07-05T00:48:02Z","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":"956aa4e6e84c10b92092fe806f0bf4fa1fa59744072af80a70330afb6199f136","cross_cats_sorted":["astro-ph.HE","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-10T19:00:01Z","title_canon_sha256":"abd2dc59a7a2d5bd87813dd94686ae324ec12b9d9cdf4d2e12a4f580cbbc6174"},"schema_version":"1.0","source":{"id":"2002.04037","kind":"arxiv","version":1}},"canonical_sha256":"f6613a33321a9827e89e8bac9a05eafa2421e1fae58fb7aba6862ee4c9c25084","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6613a33321a9827e89e8bac9a05eafa2421e1fae58fb7aba6862ee4c9c25084","first_computed_at":"2026-07-05T00:48:02.608655Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:48:02.608655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Vt6Z4MbVmD8AzjB2w/LUG3hs2QCbssNqW5zE4fZW5l0lVaI6CsCUrukffbOeJVDgjrGtNQcK85X+DxXha1yAA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:48:02.609158Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.04037","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea75ec3cc1ff5d99df3c7db85e005be987c01ee9e42aeb1b84c1bf22e831d61e","sha256:4e009dfefd04268400e778f4e165a7aaf2a86c11390c6a6e828e2a7cd14a5d70"],"state_sha256":"146bd1ffb8abc81da5d38eb269321a84a3f4da4043768308fe24975b512a3084"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jm1zrQes296Djcsvsfcyt+aUtkdzJrDdWogvwAJIHBInPVeoxrn4w5XVTIZ4WvbDchm3UVAbR8PJ/FHwU5NjCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T11:37:57.082112Z","bundle_sha256":"d25e8fce87754056c17c282901183c0c0f2a4eb10b5807fc4877f5c42dbe324c"}}