{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:SCN7TUEARFFTXBKZQSS27TFUON","short_pith_number":"pith:SCN7TUEA","canonical_record":{"source":{"id":"1911.07862","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-11-18T19:00:02Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"e2e58278c8a5b743d920bf7c97a08f0344c707f06a2b9fe326c2457dbcb3c28a","abstract_canon_sha256":"ae59e90a0bc4f5e846e3363798a48f3b8319494eef1a7bdb6051a712986ade26"},"schema_version":"1.0"},"canonical_sha256":"909bf9d080894b3b855984a5afccb4736dd3542d74d0473e5edd98d2ad82afd6","source":{"kind":"arxiv","id":"1911.07862","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.07862","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"arxiv_version","alias_value":"1911.07862v1","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.07862","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"pith_short_12","alias_value":"SCN7TUEARFFT","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"pith_short_16","alias_value":"SCN7TUEARFFTXBKZ","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"pith_short_8","alias_value":"SCN7TUEA","created_at":"2026-07-05T00:20:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:SCN7TUEARFFTXBKZQSS27TFUON","target":"record","payload":{"canonical_record":{"source":{"id":"1911.07862","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-11-18T19:00:02Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"e2e58278c8a5b743d920bf7c97a08f0344c707f06a2b9fe326c2457dbcb3c28a","abstract_canon_sha256":"ae59e90a0bc4f5e846e3363798a48f3b8319494eef1a7bdb6051a712986ade26"},"schema_version":"1.0"},"canonical_sha256":"909bf9d080894b3b855984a5afccb4736dd3542d74d0473e5edd98d2ad82afd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:20:22.213755Z","signature_b64":"y22Rka8wqG1LDlONb0GHmiSFYL7PMfpu6wAtNP/yJH/MOgs6whHNvyzY/Wn6bFHP9nShwtB106LGUYoN6U4+Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"909bf9d080894b3b855984a5afccb4736dd3542d74d0473e5edd98d2ad82afd6","last_reissued_at":"2026-07-05T00:20:22.213371Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:20:22.213371Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1911.07862","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:20:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oLWQMtX2m9KG0fDSWBO8ghQTQYq6KKerKouF63lu6hrdeOMj5pvBx6ohoWjteXZd6DscWwLF8FAp8dVNmo/UBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T07:55:10.395408Z"},"content_sha256":"121a6ffff28437bde055ca9d534cd2f1cbb5c2d15eed320a90b01bcdbda752f3","schema_version":"1.0","event_id":"sha256:121a6ffff28437bde055ca9d534cd2f1cbb5c2d15eed320a90b01bcdbda752f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:SCN7TUEARFFTXBKZQSS27TFUON","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superradiance and the Spins of Black Holes from LIGO and X-ray binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-ph","authors_text":"Akshay Ghalsasi, Nicolas Fernandez, Stefano Profumo","submitted_at":"2019-11-18T19:00:02Z","abstract_excerpt":"Measurements of the spin of stellar mass black holes (BHs) are now possible both through LIGO observations of binary BH mergers and for BHs in X-ray binary systems. The spins of BHs as inferred from LIGO observations suggest that BH spins are on the lower end of what is expected for a ``flat'' distribution of spins, while those from BHs in X-ray binaries tend to be large. Superradiance, a process that can effectively reduce the spin of BHs before they merge, could explain the lower observed spins in binary BH mergers for a non self-interacting light boson. In this paper, we use Bayesian analys"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.07862","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1911.07862/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:20:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uOF9inQfHs6mP2VYVjwmkW+EMEBNNNpe4/mO7D55eIeEO/IdujB7K2+I+5J2wgdz8razOldsooVRP7RA0JZcAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T07:55:10.395791Z"},"content_sha256":"5f02ed4393d421a5a4f4f7ebe65eb25711e233e635fd411e781829fd14e97281","schema_version":"1.0","event_id":"sha256:5f02ed4393d421a5a4f4f7ebe65eb25711e233e635fd411e781829fd14e97281"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SCN7TUEARFFTXBKZQSS27TFUON/bundle.json","state_url":"https://pith.science/pith/SCN7TUEARFFTXBKZQSS27TFUON/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SCN7TUEARFFTXBKZQSS27TFUON/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":"2026-07-16T07:55:10Z","links":{"resolver":"https://pith.science/pith/SCN7TUEARFFTXBKZQSS27TFUON","bundle":"https://pith.science/pith/SCN7TUEARFFTXBKZQSS27TFUON/bundle.json","state":"https://pith.science/pith/SCN7TUEARFFTXBKZQSS27TFUON/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SCN7TUEARFFTXBKZQSS27TFUON/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:SCN7TUEARFFTXBKZQSS27TFUON","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":"ae59e90a0bc4f5e846e3363798a48f3b8319494eef1a7bdb6051a712986ade26","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-11-18T19:00:02Z","title_canon_sha256":"e2e58278c8a5b743d920bf7c97a08f0344c707f06a2b9fe326c2457dbcb3c28a"},"schema_version":"1.0","source":{"id":"1911.07862","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.07862","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"arxiv_version","alias_value":"1911.07862v1","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.07862","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"pith_short_12","alias_value":"SCN7TUEARFFT","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"pith_short_16","alias_value":"SCN7TUEARFFTXBKZ","created_at":"2026-07-05T00:20:22Z"},{"alias_kind":"pith_short_8","alias_value":"SCN7TUEA","created_at":"2026-07-05T00:20:22Z"}],"graph_snapshots":[{"event_id":"sha256:5f02ed4393d421a5a4f4f7ebe65eb25711e233e635fd411e781829fd14e97281","target":"graph","created_at":"2026-07-05T00:20:22Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1911.07862/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Measurements of the spin of stellar mass black holes (BHs) are now possible both through LIGO observations of binary BH mergers and for BHs in X-ray binary systems. The spins of BHs as inferred from LIGO observations suggest that BH spins are on the lower end of what is expected for a ``flat'' distribution of spins, while those from BHs in X-ray binaries tend to be large. Superradiance, a process that can effectively reduce the spin of BHs before they merge, could explain the lower observed spins in binary BH mergers for a non self-interacting light boson. In this paper, we use Bayesian analys","authors_text":"Akshay Ghalsasi, Nicolas Fernandez, Stefano Profumo","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-11-18T19:00:02Z","title":"Superradiance and the Spins of Black Holes from LIGO and X-ray binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.07862","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":"sha256:121a6ffff28437bde055ca9d534cd2f1cbb5c2d15eed320a90b01bcdbda752f3","target":"record","created_at":"2026-07-05T00:20:22Z","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":"ae59e90a0bc4f5e846e3363798a48f3b8319494eef1a7bdb6051a712986ade26","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-11-18T19:00:02Z","title_canon_sha256":"e2e58278c8a5b743d920bf7c97a08f0344c707f06a2b9fe326c2457dbcb3c28a"},"schema_version":"1.0","source":{"id":"1911.07862","kind":"arxiv","version":1}},"canonical_sha256":"909bf9d080894b3b855984a5afccb4736dd3542d74d0473e5edd98d2ad82afd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"909bf9d080894b3b855984a5afccb4736dd3542d74d0473e5edd98d2ad82afd6","first_computed_at":"2026-07-05T00:20:22.213371Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:20:22.213371Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y22Rka8wqG1LDlONb0GHmiSFYL7PMfpu6wAtNP/yJH/MOgs6whHNvyzY/Wn6bFHP9nShwtB106LGUYoN6U4+Cg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:20:22.213755Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.07862","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:121a6ffff28437bde055ca9d534cd2f1cbb5c2d15eed320a90b01bcdbda752f3","sha256:5f02ed4393d421a5a4f4f7ebe65eb25711e233e635fd411e781829fd14e97281"],"state_sha256":"feb9eaf9bb3486a942a5922b233228ed2970eef284184ec70daf0652f4923d7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JnA2ZWhytr9giQepcG1Gzxu3kDc23GXufLFgKSgVyIDEL4LHOQml0oPp+2sm7x9FtoGmOA/choCH92mQLf2OCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T07:55:10.397931Z","bundle_sha256":"57ceddf9b500db40a2a260acfdd1074fc27371c96ee47ef2cfafcba1b60c8abc"}}