{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:TX4G2WWWOQKYUX6SELCRYSP7GW","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":"c68eb0c91b5fdee89654ae2a221b140ccca07020823aebaae9c856a36b82f658","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-08-01T18:11:23Z","title_canon_sha256":"7c83c54d6adadb16d6f36764fbe47f55fa01ea2fe24f87f3713dd36f51529c14"},"schema_version":"1.0","source":{"id":"astro-ph/0208001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0208001","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0208001v1","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0208001","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"TX4G2WWWOQKY","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"TX4G2WWWOQKYUX6S","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"TX4G2WWW","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:d7fa0f309396687c8514984a2384d680ce683ca087d0f752c7de41de9522e648","target":"graph","created_at":"2026-05-18T04:23:01Z","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":"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","authors_text":"David Merritt (Rutgers University), R.D. Ekers (ATNF)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-08-01T18:11:23Z","title":"Tracing Black Hole Mergers Through Radio Lobe Morphology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0208001","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":"sha256:44ef5ac5b25948dcb30e614a233d55429df17bac7a02c796a63757a12c07fa75","target":"record","created_at":"2026-05-18T04:23:01Z","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":"c68eb0c91b5fdee89654ae2a221b140ccca07020823aebaae9c856a36b82f658","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-08-01T18:11:23Z","title_canon_sha256":"7c83c54d6adadb16d6f36764fbe47f55fa01ea2fe24f87f3713dd36f51529c14"},"schema_version":"1.0","source":{"id":"astro-ph/0208001","kind":"arxiv","version":1}},"canonical_sha256":"9df86d5ad674158a5fd222c51c49ff358f540011674fc9fd8c6a16c6182ae002","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9df86d5ad674158a5fd222c51c49ff358f540011674fc9fd8c6a16c6182ae002","first_computed_at":"2026-05-18T04:23:01.152063Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:01.152063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Ia8QKEP7S/febtLrPQg+6VB70EvQT6A5bc23VEDojiMu6FBMlCwXDe2nOGLY0krbxVTxlOewLANp+5eWW/LDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:01.152772Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0208001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44ef5ac5b25948dcb30e614a233d55429df17bac7a02c796a63757a12c07fa75","sha256:d7fa0f309396687c8514984a2384d680ce683ca087d0f752c7de41de9522e648"],"state_sha256":"c4ea0aca70c3c19ce9ed854164614d4bd6cc0ddd560235be33d2f89bc8b896fb"}