{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:P6OE6A3V4QKBRRPZ3DAILR5NOK","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":"0cf61b24284fd63364429e56a17a9b9ec8edafb997c007af196cfe230f11177f","cross_cats_sorted":["astro-ph.HE","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-16T16:04:54Z","title_canon_sha256":"ef2fbced775fd535ce0121d5676bd5dfec4a5df43bf382716e971ccd32451573"},"schema_version":"1.0","source":{"id":"1704.04791","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.04791","created_at":"2026-05-18T00:39:46Z"},{"alias_kind":"arxiv_version","alias_value":"1704.04791v2","created_at":"2026-05-18T00:39:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.04791","created_at":"2026-05-18T00:39:46Z"},{"alias_kind":"pith_short_12","alias_value":"P6OE6A3V4QKB","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"P6OE6A3V4QKBRRPZ","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"P6OE6A3V","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:80a858299da41e2f7853b12db16d7192c33b52a31c4c825dd4c2c0a2183756db","target":"graph","created_at":"2026-05-18T00:39:46Z","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":"We study the growth and saturation of the superradiant instability of a complex, massive vector (Proca) field as it extracts energy and angular momentum from a spinning black hole, using numerical solutions of the full Einstein-Proca equations. We concentrate on a rapidly spinning black hole ($a=0.99$) and the dominant $m=1$ azimuthal mode of the Proca field, with real and imaginary components of the field chosen to yield an axisymmetric stress-energy tensor and, hence, spacetime. We find that in excess of $9\\%$ of the black hole's mass can be transferred into the field. In all cases studied, ","authors_text":"Frans Pretorius, William E. East","cross_cats":["astro-ph.HE","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-16T16:04:54Z","title":"Superradiant Instability and Backreaction of Massive Vector Fields around Kerr Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.04791","kind":"arxiv","version":2},"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":"sha256:2a418e0e44f79cd49e164b4333fba927da88c122339ccda36bd65a451a061246","target":"record","created_at":"2026-05-18T00:39:46Z","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":"0cf61b24284fd63364429e56a17a9b9ec8edafb997c007af196cfe230f11177f","cross_cats_sorted":["astro-ph.HE","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-16T16:04:54Z","title_canon_sha256":"ef2fbced775fd535ce0121d5676bd5dfec4a5df43bf382716e971ccd32451573"},"schema_version":"1.0","source":{"id":"1704.04791","kind":"arxiv","version":2}},"canonical_sha256":"7f9c4f0375e41418c5f9d8c085c7ad72bb71563f8733302cd94973f828011a52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f9c4f0375e41418c5f9d8c085c7ad72bb71563f8733302cd94973f828011a52","first_computed_at":"2026-05-18T00:39:46.352294Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:46.352294Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K8n41vrPtf6sNFtoyU5jqpJ3zB4lnZlHRS5n9IHWSTEQiOZ+18DnYn8lBidb/jCbUK78+QPC0riFww9cYXiOCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:46.353056Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.04791","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a418e0e44f79cd49e164b4333fba927da88c122339ccda36bd65a451a061246","sha256:80a858299da41e2f7853b12db16d7192c33b52a31c4c825dd4c2c0a2183756db"],"state_sha256":"6708239e83e73e2f045344a1f76a7cbd4815d5396ea1c329941c7688699e8e4b"}