{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:NORFFHDEUDET6SJXOTGQSRDC6A","short_pith_number":"pith:NORFFHDE","canonical_record":{"source":{"id":"1209.0465","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-09-03T20:00:10Z","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"title_canon_sha256":"67c900705c5305544b795ab7e0cb9b9a8808a1ca8680ff7e83e01872311164bb","abstract_canon_sha256":"6e1fd459878aec1bb651fbdf219259a0a10f76d4af059f8875761fd9f71babf3"},"schema_version":"1.0"},"canonical_sha256":"6ba2529c64a0c93f493774cd094462f014d7f51363f53696ef7ba747479f71da","source":{"kind":"arxiv","id":"1209.0465","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0465","created_at":"2026-05-18T01:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0465v2","created_at":"2026-05-18T01:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0465","created_at":"2026-05-18T01:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"NORFFHDEUDET","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NORFFHDEUDET6SJX","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NORFFHDE","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:NORFFHDEUDET6SJXOTGQSRDC6A","target":"record","payload":{"canonical_record":{"source":{"id":"1209.0465","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-09-03T20:00:10Z","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"title_canon_sha256":"67c900705c5305544b795ab7e0cb9b9a8808a1ca8680ff7e83e01872311164bb","abstract_canon_sha256":"6e1fd459878aec1bb651fbdf219259a0a10f76d4af059f8875761fd9f71babf3"},"schema_version":"1.0"},"canonical_sha256":"6ba2529c64a0c93f493774cd094462f014d7f51363f53696ef7ba747479f71da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:47.871791Z","signature_b64":"ScpZzgu38spILVVTbdDszR8bjkNxnXcAwtkNBPw9bMnSstMSelLNHDBlXur6r+0woXk2QXYl3MBWbPzDN5vZBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ba2529c64a0c93f493774cd094462f014d7f51363f53696ef7ba747479f71da","last_reissued_at":"2026-05-18T01:54:47.871202Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:47.871202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.0465","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:54:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LD4IcUyFwi8bIM31RC60fyJQoIVhoYYg3s22wZUKbh7d0/78HZIqyowAd/Cd1JeGohPtd7uvHYPo99frUighDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:56:50.384960Z"},"content_sha256":"e922739abcebf2e7b6bf28734cb3992358ead06908cd4ca86ad0a46c45b0e3d5","schema_version":"1.0","event_id":"sha256:e922739abcebf2e7b6bf28734cb3992358ead06908cd4ca86ad0a46c45b0e3d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:NORFFHDEUDET6SJXOTGQSRDC6A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black-Hole Bombs and Photon-Mass Bounds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"Akihiro Ishibashi, Emanuele Berti, Leonardo Gualtieri, Paolo Pani, Vitor Cardoso","submitted_at":"2012-09-03T20:00:10Z","abstract_excerpt":"Generic extensions of the standard model predict the existence of ultralight bosonic degrees of freedom. Several ongoing experiments are aimed at detecting these particles or constraining their mass range. Here we show that massive vector fields around rotating black holes can give rise to a strong superradiant instability which extracts angular momentum from the hole. The observation of supermassive spinning black holes imposes limits on this mechanism. We show that current supermassive black hole spin estimates provide the tightest upper limits on the mass of the photon (mv<4x10^{-20} eV acc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0465","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:54:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vf/DHh8ZrnSCXzxzjoD7+IPazVf13As8MnKgO7s1Po7gGyyjQ0Ag/ql+R590u8VVplLUyj1aMw7WQFmp1tjkCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:56:50.385638Z"},"content_sha256":"6954d6f286736490eb6c32385cc3ad29273261ea0837c203ee0ee9deb407c731","schema_version":"1.0","event_id":"sha256:6954d6f286736490eb6c32385cc3ad29273261ea0837c203ee0ee9deb407c731"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NORFFHDEUDET6SJXOTGQSRDC6A/bundle.json","state_url":"https://pith.science/pith/NORFFHDEUDET6SJXOTGQSRDC6A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NORFFHDEUDET6SJXOTGQSRDC6A/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":"2026-05-25T19:56:50Z","links":{"resolver":"https://pith.science/pith/NORFFHDEUDET6SJXOTGQSRDC6A","bundle":"https://pith.science/pith/NORFFHDEUDET6SJXOTGQSRDC6A/bundle.json","state":"https://pith.science/pith/NORFFHDEUDET6SJXOTGQSRDC6A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NORFFHDEUDET6SJXOTGQSRDC6A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:NORFFHDEUDET6SJXOTGQSRDC6A","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":"6e1fd459878aec1bb651fbdf219259a0a10f76d4af059f8875761fd9f71babf3","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-09-03T20:00:10Z","title_canon_sha256":"67c900705c5305544b795ab7e0cb9b9a8808a1ca8680ff7e83e01872311164bb"},"schema_version":"1.0","source":{"id":"1209.0465","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0465","created_at":"2026-05-18T01:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0465v2","created_at":"2026-05-18T01:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0465","created_at":"2026-05-18T01:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"NORFFHDEUDET","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NORFFHDEUDET6SJX","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NORFFHDE","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:6954d6f286736490eb6c32385cc3ad29273261ea0837c203ee0ee9deb407c731","target":"graph","created_at":"2026-05-18T01:54:47Z","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":"Generic extensions of the standard model predict the existence of ultralight bosonic degrees of freedom. Several ongoing experiments are aimed at detecting these particles or constraining their mass range. Here we show that massive vector fields around rotating black holes can give rise to a strong superradiant instability which extracts angular momentum from the hole. The observation of supermassive spinning black holes imposes limits on this mechanism. We show that current supermassive black hole spin estimates provide the tightest upper limits on the mass of the photon (mv<4x10^{-20} eV acc","authors_text":"Akihiro Ishibashi, Emanuele Berti, Leonardo Gualtieri, Paolo Pani, Vitor Cardoso","cross_cats":["astro-ph.HE","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-09-03T20:00:10Z","title":"Black-Hole Bombs and Photon-Mass Bounds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0465","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:e922739abcebf2e7b6bf28734cb3992358ead06908cd4ca86ad0a46c45b0e3d5","target":"record","created_at":"2026-05-18T01:54:47Z","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":"6e1fd459878aec1bb651fbdf219259a0a10f76d4af059f8875761fd9f71babf3","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-09-03T20:00:10Z","title_canon_sha256":"67c900705c5305544b795ab7e0cb9b9a8808a1ca8680ff7e83e01872311164bb"},"schema_version":"1.0","source":{"id":"1209.0465","kind":"arxiv","version":2}},"canonical_sha256":"6ba2529c64a0c93f493774cd094462f014d7f51363f53696ef7ba747479f71da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ba2529c64a0c93f493774cd094462f014d7f51363f53696ef7ba747479f71da","first_computed_at":"2026-05-18T01:54:47.871202Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:47.871202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ScpZzgu38spILVVTbdDszR8bjkNxnXcAwtkNBPw9bMnSstMSelLNHDBlXur6r+0woXk2QXYl3MBWbPzDN5vZBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:47.871791Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.0465","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e922739abcebf2e7b6bf28734cb3992358ead06908cd4ca86ad0a46c45b0e3d5","sha256:6954d6f286736490eb6c32385cc3ad29273261ea0837c203ee0ee9deb407c731"],"state_sha256":"30a440119a4cb79df4b926552412ec40a6bae343cbb9b99f95ee825455d707a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0zgKboB/6/stmhSEM85lOQI+m5myx7feVPU3969fombL1y19lgUAb72OTlTLgCTwaIfBFRck9gA9U7j+0GfrBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:56:50.388983Z","bundle_sha256":"a9a32fe9e097c2ae171aafdc45ee9ee85edbb35420b335c92bc7e32fcc36fb7f"}}