{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:TX4G2WWWOQKYUX6SELCRYSP7GW","short_pith_number":"pith:TX4G2WWW","schema_version":"1.0","canonical_sha256":"9df86d5ad674158a5fd222c51c49ff358f540011674fc9fd8c6a16c6182ae002","source":{"kind":"arxiv","id":"astro-ph/0208001","version":1},"attestation_state":"computed","paper":{"title":"Tracing Black Hole Mergers Through Radio Lobe Morphology","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"David Merritt (Rutgers University), R.D. Ekers (ATNF)","submitted_at":"2002-08-01T18:11:23Z","abstract_excerpt":"Binary supermassive black holes are produced by galactic mergers as the black holes from the two galaxies fall to the center of the merged system and form a bound pair. The two black holes will eventually coalesce in an enormous burst of gravitational radiation. Here we show that the orientation of a black hole's spin axis would change dramatically even in a minor merger, leading to a sudden flip in the direction of any associated jet. We identify the winged or X-type radio sources with galaxies in which this has occurred. The implied coalescence rate is similar to the overall galaxy merger ra"},"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":"astro-ph/0208001","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-08-01T18:11:23Z","cross_cats_sorted":[],"title_canon_sha256":"7c83c54d6adadb16d6f36764fbe47f55fa01ea2fe24f87f3713dd36f51529c14","abstract_canon_sha256":"c68eb0c91b5fdee89654ae2a221b140ccca07020823aebaae9c856a36b82f658"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:01.152772Z","signature_b64":"9Ia8QKEP7S/febtLrPQg+6VB70EvQT6A5bc23VEDojiMu6FBMlCwXDe2nOGLY0krbxVTxlOewLANp+5eWW/LDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9df86d5ad674158a5fd222c51c49ff358f540011674fc9fd8c6a16c6182ae002","last_reissued_at":"2026-05-18T04:23:01.152063Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:01.152063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Tracing Black Hole Mergers Through Radio Lobe Morphology","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"David Merritt (Rutgers University), R.D. Ekers (ATNF)","submitted_at":"2002-08-01T18:11:23Z","abstract_excerpt":"Binary supermassive black holes are produced by galactic mergers as the black holes from the two galaxies fall to the center of the merged system and form a bound pair. The two black holes will eventually coalesce in an enormous burst of gravitational radiation. Here we show that the orientation of a black hole's spin axis would change dramatically even in a minor merger, leading to a sudden flip in the direction of any associated jet. We identify the winged or X-type radio sources with galaxies in which this has occurred. The implied coalescence rate is similar to the overall galaxy merger ra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0208001","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":""},"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":"astro-ph/0208001","created_at":"2026-05-18T04:23:01.152159+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0208001v1","created_at":"2026-05-18T04:23:01.152159+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0208001","created_at":"2026-05-18T04:23:01.152159+00:00"},{"alias_kind":"pith_short_12","alias_value":"TX4G2WWWOQKY","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_16","alias_value":"TX4G2WWWOQKYUX6S","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_8","alias_value":"TX4G2WWW","created_at":"2026-05-18T12:25:51.375804+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW","json":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW.json","graph_json":"https://pith.science/api/pith-number/TX4G2WWWOQKYUX6SELCRYSP7GW/graph.json","events_json":"https://pith.science/api/pith-number/TX4G2WWWOQKYUX6SELCRYSP7GW/events.json","paper":"https://pith.science/paper/TX4G2WWW"},"agent_actions":{"view_html":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW","download_json":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW.json","view_paper":"https://pith.science/paper/TX4G2WWW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0208001&json=true","fetch_graph":"https://pith.science/api/pith-number/TX4G2WWWOQKYUX6SELCRYSP7GW/graph.json","fetch_events":"https://pith.science/api/pith-number/TX4G2WWWOQKYUX6SELCRYSP7GW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW/action/storage_attestation","attest_author":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW/action/author_attestation","sign_citation":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW/action/citation_signature","submit_replication":"https://pith.science/pith/TX4G2WWWOQKYUX6SELCRYSP7GW/action/replication_record"}},"created_at":"2026-05-18T04:23:01.152159+00:00","updated_at":"2026-05-18T04:23:01.152159+00:00"}