{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:PE22VHC35VKO5S7GP7Z32PRBUO","short_pith_number":"pith:PE22VHC3","schema_version":"1.0","canonical_sha256":"7935aa9c5bed54eecbe67ff3bd3e21a3a5775d7980ac53445bf7feec5ede1abe","source":{"kind":"arxiv","id":"1511.01890","version":2},"attestation_state":"computed","paper":{"title":"Cassini states for black hole binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Alexandre C. M. Correia","submitted_at":"2015-11-05T20:54:10Z","abstract_excerpt":"Cassini states correspond to the equilibria of the spin axis of a body when its orbit is perturbed. They were initially described for planetary satellites, but the spin axes of black hole binaries also present this kind of equilibria. In previous works, Cassini states were reported as spin-orbit resonances, but actually the spin of black hole binaries is in circulation and there is no resonant motion. Here we provide a general description of the spin dynamics of black hole binary systems based on a Hamiltonian formalism. In absence of dissipation the problem is integrable and it is easy to ide"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1511.01890","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-11-05T20:54:10Z","cross_cats_sorted":["astro-ph.EP","astro-ph.HE"],"title_canon_sha256":"489cfe2cb11f01ebaae8cc6030923d2b7d9ca244f95df576e28562b8c6883962","abstract_canon_sha256":"aaf045ee0ec06c9857484a80282e303439507776e1fd3ddfcfe0effbd9a6c1a9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:53.773643Z","signature_b64":"bJnqp49ELohOZchrnsFhVdYHAO8f3Sm56vWuIT5GfdJ8XmtoVUYuSRK6uCNLsZLmi7hKLW+SogN4d4qF6RJWAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7935aa9c5bed54eecbe67ff3bd3e21a3a5775d7980ac53445bf7feec5ede1abe","last_reissued_at":"2026-05-18T01:22:53.773151Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:53.773151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cassini states for black hole binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Alexandre C. M. Correia","submitted_at":"2015-11-05T20:54:10Z","abstract_excerpt":"Cassini states correspond to the equilibria of the spin axis of a body when its orbit is perturbed. They were initially described for planetary satellites, but the spin axes of black hole binaries also present this kind of equilibria. In previous works, Cassini states were reported as spin-orbit resonances, but actually the spin of black hole binaries is in circulation and there is no resonant motion. Here we provide a general description of the spin dynamics of black hole binary systems based on a Hamiltonian formalism. In absence of dissipation the problem is integrable and it is easy to ide"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01890","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1511.01890","created_at":"2026-05-18T01:22:53.773228+00:00"},{"alias_kind":"arxiv_version","alias_value":"1511.01890v2","created_at":"2026-05-18T01:22:53.773228+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01890","created_at":"2026-05-18T01:22:53.773228+00:00"},{"alias_kind":"pith_short_12","alias_value":"PE22VHC35VKO","created_at":"2026-05-18T12:29:37.295048+00:00"},{"alias_kind":"pith_short_16","alias_value":"PE22VHC35VKO5S7G","created_at":"2026-05-18T12:29:37.295048+00:00"},{"alias_kind":"pith_short_8","alias_value":"PE22VHC3","created_at":"2026-05-18T12:29:37.295048+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2508.19735","citing_title":"Coincident morphological transitions in precessing black-hole binaries","ref_index":17,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO","json":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO.json","graph_json":"https://pith.science/api/pith-number/PE22VHC35VKO5S7GP7Z32PRBUO/graph.json","events_json":"https://pith.science/api/pith-number/PE22VHC35VKO5S7GP7Z32PRBUO/events.json","paper":"https://pith.science/paper/PE22VHC3"},"agent_actions":{"view_html":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO","download_json":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO.json","view_paper":"https://pith.science/paper/PE22VHC3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1511.01890&json=true","fetch_graph":"https://pith.science/api/pith-number/PE22VHC35VKO5S7GP7Z32PRBUO/graph.json","fetch_events":"https://pith.science/api/pith-number/PE22VHC35VKO5S7GP7Z32PRBUO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO/action/storage_attestation","attest_author":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO/action/author_attestation","sign_citation":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO/action/citation_signature","submit_replication":"https://pith.science/pith/PE22VHC35VKO5S7GP7Z32PRBUO/action/replication_record"}},"created_at":"2026-05-18T01:22:53.773228+00:00","updated_at":"2026-05-18T01:22:53.773228+00:00"}