{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:FD36CPKX3Z42OZ6JJC2VU5YP2S","short_pith_number":"pith:FD36CPKX","canonical_record":{"source":{"id":"1908.02247","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-06T16:36:45Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c9c5b5f522d2c08578c6ca2e8129c4d6456eba861d2faf6aebc1aa2e87535a0a","abstract_canon_sha256":"344429155e9923ea16676db079cae018bcaec1b3d0ad6a7248a8829358927a67"},"schema_version":"1.0"},"canonical_sha256":"28f7e13d57de79a767c948b55a770fd4b6bb049402add52d3b69a63ac6ca21e8","source":{"kind":"arxiv","id":"1908.02247","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02247","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02247v2","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02247","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"pith_short_12","alias_value":"FD36CPKX3Z42","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"pith_short_16","alias_value":"FD36CPKX3Z42OZ6J","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"pith_short_8","alias_value":"FD36CPKX","created_at":"2026-07-05T00:20:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:FD36CPKX3Z42OZ6JJC2VU5YP2S","target":"record","payload":{"canonical_record":{"source":{"id":"1908.02247","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-06T16:36:45Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c9c5b5f522d2c08578c6ca2e8129c4d6456eba861d2faf6aebc1aa2e87535a0a","abstract_canon_sha256":"344429155e9923ea16676db079cae018bcaec1b3d0ad6a7248a8829358927a67"},"schema_version":"1.0"},"canonical_sha256":"28f7e13d57de79a767c948b55a770fd4b6bb049402add52d3b69a63ac6ca21e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:20:17.964786Z","signature_b64":"QbecF1SZofz4WzNlxTKa+ozvTBpjKhLYfueNI2V9CsaYb+QCSsKryHFx67ExU+DXFndLcBfpsVF8tc9X+TNkAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"28f7e13d57de79a767c948b55a770fd4b6bb049402add52d3b69a63ac6ca21e8","last_reissued_at":"2026-07-05T00:20:17.964363Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:20:17.964363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.02247","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":"2026-07-05T00:20:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KRik606QZ0TWrYx5uYX+RGXBSA2hEk2g9NYXzhWA5HW4G/jrlLdh7vv98emvaNEQ48TuP2CEvdxnj0PQgEmzCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T07:34:06.709234Z"},"content_sha256":"91bef862f107aba620bab609cd46026790af06d78d5ee89cb8b3d5a665fa74bc","schema_version":"1.0","event_id":"sha256:91bef862f107aba620bab609cd46026790af06d78d5ee89cb8b3d5a665fa74bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:FD36CPKX3Z42OZ6JJC2VU5YP2S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on the binary black hole nature of GW151226 and GW170608 from the measurement of spin-induced quadrupole moments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"A. Samajdar, Chandra Kant Mishra, K. G. Arun, M. Saleem, N. V. Krishnendu, W. Del Pozzo","submitted_at":"2019-08-06T16:36:45Z","abstract_excerpt":"According to the \"no-hair\" conjecture, a Kerr black hole (BH) is completely described by its mass and spin. In particular, the spin-induced quadrupole moment of a Kerr BH with mass $m$ and dimensionless spin $\\chi$ can be written as $Q=-\\kappa\\,m^3\\chi^2$, where $\\kappa_{\\rm BH}=1$. Thus by measuring the spin-induced quadrupole parameter $\\kappa$, we can test the binary black hole nature of compact binaries and distinguish them from binaries comprised of other exotic compact objects, as proposed in [N. V. Krishnendu et al., PRL 119, 091101 (2017)]. Here, we present a Bayesian framework to carr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02247","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.02247/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":"2026-07-05T00:20:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V/Tv5q5urFT/YIl3LY1Dob8/zlsxxyfSTbGt7Gb4/64DVm/ppZRqn2EwRbOHFAXGO/6kGMh0KcVRlJvJdt1kBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T07:34:06.709632Z"},"content_sha256":"4fbd03e05e33a47b930d26a3aa78fc07c3d9c3f03cc3006fe9eb286a74649f04","schema_version":"1.0","event_id":"sha256:4fbd03e05e33a47b930d26a3aa78fc07c3d9c3f03cc3006fe9eb286a74649f04"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S/bundle.json","state_url":"https://pith.science/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S/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":"2026-07-16T07:34:06Z","links":{"resolver":"https://pith.science/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S","bundle":"https://pith.science/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S/bundle.json","state":"https://pith.science/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FD36CPKX3Z42OZ6JJC2VU5YP2S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FD36CPKX3Z42OZ6JJC2VU5YP2S","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":"344429155e9923ea16676db079cae018bcaec1b3d0ad6a7248a8829358927a67","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-06T16:36:45Z","title_canon_sha256":"c9c5b5f522d2c08578c6ca2e8129c4d6456eba861d2faf6aebc1aa2e87535a0a"},"schema_version":"1.0","source":{"id":"1908.02247","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02247","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02247v2","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02247","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"pith_short_12","alias_value":"FD36CPKX3Z42","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"pith_short_16","alias_value":"FD36CPKX3Z42OZ6J","created_at":"2026-07-05T00:20:17Z"},{"alias_kind":"pith_short_8","alias_value":"FD36CPKX","created_at":"2026-07-05T00:20:17Z"}],"graph_snapshots":[{"event_id":"sha256:4fbd03e05e33a47b930d26a3aa78fc07c3d9c3f03cc3006fe9eb286a74649f04","target":"graph","created_at":"2026-07-05T00:20:17Z","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/1908.02247/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"According to the \"no-hair\" conjecture, a Kerr black hole (BH) is completely described by its mass and spin. In particular, the spin-induced quadrupole moment of a Kerr BH with mass $m$ and dimensionless spin $\\chi$ can be written as $Q=-\\kappa\\,m^3\\chi^2$, where $\\kappa_{\\rm BH}=1$. Thus by measuring the spin-induced quadrupole parameter $\\kappa$, we can test the binary black hole nature of compact binaries and distinguish them from binaries comprised of other exotic compact objects, as proposed in [N. V. Krishnendu et al., PRL 119, 091101 (2017)]. Here, we present a Bayesian framework to carr","authors_text":"A. Samajdar, Chandra Kant Mishra, K. G. Arun, M. Saleem, N. V. Krishnendu, W. Del Pozzo","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-06T16:36:45Z","title":"Constraints on the binary black hole nature of GW151226 and GW170608 from the measurement of spin-induced quadrupole moments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02247","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":"sha256:91bef862f107aba620bab609cd46026790af06d78d5ee89cb8b3d5a665fa74bc","target":"record","created_at":"2026-07-05T00:20:17Z","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":"344429155e9923ea16676db079cae018bcaec1b3d0ad6a7248a8829358927a67","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-06T16:36:45Z","title_canon_sha256":"c9c5b5f522d2c08578c6ca2e8129c4d6456eba861d2faf6aebc1aa2e87535a0a"},"schema_version":"1.0","source":{"id":"1908.02247","kind":"arxiv","version":2}},"canonical_sha256":"28f7e13d57de79a767c948b55a770fd4b6bb049402add52d3b69a63ac6ca21e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28f7e13d57de79a767c948b55a770fd4b6bb049402add52d3b69a63ac6ca21e8","first_computed_at":"2026-07-05T00:20:17.964363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:20:17.964363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QbecF1SZofz4WzNlxTKa+ozvTBpjKhLYfueNI2V9CsaYb+QCSsKryHFx67ExU+DXFndLcBfpsVF8tc9X+TNkAA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:20:17.964786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.02247","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91bef862f107aba620bab609cd46026790af06d78d5ee89cb8b3d5a665fa74bc","sha256:4fbd03e05e33a47b930d26a3aa78fc07c3d9c3f03cc3006fe9eb286a74649f04"],"state_sha256":"ddfad5934d3aeebfbd79731003a828098278995a8289c06e10978626fd8707fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/7b/8PhpyqxXeB2mUBycG9jNhBPEbhs5sKhMP/t1ddjx6tUvO8js5hlC8d6VKmBpJPSyrdvAiJJCuAV7LuBJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T07:34:06.712208Z","bundle_sha256":"1907f9301465ccc1c96c48203b15ecd723d323496fc57790dfbdf7735f3127ef"}}