{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:GCKSPI73X6PBI7BF4JTVNRFWPD","short_pith_number":"pith:GCKSPI73","canonical_record":{"source":{"id":"2004.08347","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-17T17:06:35Z","cross_cats_sorted":[],"title_canon_sha256":"493ff600188bb0b68358da88cbc346ab7106722dbbda2a2b6d5f75d837e8d5df","abstract_canon_sha256":"3b45652c4dc99809492d28a3df3b1d8f898f0ec301b55e2540574eb62e127dd7"},"schema_version":"1.0"},"canonical_sha256":"309527a3fbbf9e147c25e26756c4b678f129def2dbbde9bffb10c5306352d9b3","source":{"kind":"arxiv","id":"2004.08347","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.08347","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"2004.08347v4","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.08347","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"GCKSPI73X6PB","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_16","alias_value":"GCKSPI73X6PBI7BF","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_8","alias_value":"GCKSPI73","created_at":"2026-07-05T01:19:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:GCKSPI73X6PBI7BF4JTVNRFWPD","target":"record","payload":{"canonical_record":{"source":{"id":"2004.08347","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-17T17:06:35Z","cross_cats_sorted":[],"title_canon_sha256":"493ff600188bb0b68358da88cbc346ab7106722dbbda2a2b6d5f75d837e8d5df","abstract_canon_sha256":"3b45652c4dc99809492d28a3df3b1d8f898f0ec301b55e2540574eb62e127dd7"},"schema_version":"1.0"},"canonical_sha256":"309527a3fbbf9e147c25e26756c4b678f129def2dbbde9bffb10c5306352d9b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:19:01.597767Z","signature_b64":"yTajbGg/CFcDtWTu0TCNiEFArfyDIsoQ8TJ2RsKCQCcbxfepFIOFNV/BaF6kDNYmWrdMTB2e8O/0LQGPdsocDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"309527a3fbbf9e147c25e26756c4b678f129def2dbbde9bffb10c5306352d9b3","last_reissued_at":"2026-07-05T01:19:01.597161Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:19:01.597161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.08347","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:19:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZzWHqNFO2v7lyqXxQjoJios5pgIncbQn1WfUVJrK791xg9daNh9jRDT658TW43627x183BQ88KzXvzneyWspCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T03:22:58.829688Z"},"content_sha256":"a6ebfd27743c8b15d31e693b56adc120fd8e547452c96920e939b5c9ef24daeb","schema_version":"1.0","event_id":"sha256:a6ebfd27743c8b15d31e693b56adc120fd8e547452c96920e939b5c9ef24daeb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:GCKSPI73X6PBI7BF4JTVNRFWPD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Aspects of multimode Kerr ring-down fitting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Gregory B. Cook","submitted_at":"2020-04-17T17:06:35Z","abstract_excerpt":"A black hole that is ringing down to quiescence emits gravitational radiation of a very specific nature that can inform us of its mass and angular momentum, test the no-hair theorem for black holes, and perhaps even give us additional information about its progenitor system. This paper provides a detailed description of, and investigation into the behavior of, multimode fitting of the ring-down signal provided by numerical simulations. We find that there are at least three well-motivated multimode fitting schemes that can be used. These methods are tested against a specific numerical simulatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.08347","kind":"arxiv","version":4},"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/2004.08347/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":"2026-07-05T01:19:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8ki1gGKsmGAd9NWgf9wADu9e2nNpiRdJQtqpJq2ZDGVXezmfsP+08I+mGpxMAobcYmvhmWntFJoFC8aNyNUUCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T03:22:58.830727Z"},"content_sha256":"43a4a922e3815f1e1118c4f8544b0da9ebae9754acf169b445188d7d57f4321a","schema_version":"1.0","event_id":"sha256:43a4a922e3815f1e1118c4f8544b0da9ebae9754acf169b445188d7d57f4321a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GCKSPI73X6PBI7BF4JTVNRFWPD/bundle.json","state_url":"https://pith.science/pith/GCKSPI73X6PBI7BF4JTVNRFWPD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GCKSPI73X6PBI7BF4JTVNRFWPD/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":"2026-08-10T03:22:58Z","links":{"resolver":"https://pith.science/pith/GCKSPI73X6PBI7BF4JTVNRFWPD","bundle":"https://pith.science/pith/GCKSPI73X6PBI7BF4JTVNRFWPD/bundle.json","state":"https://pith.science/pith/GCKSPI73X6PBI7BF4JTVNRFWPD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GCKSPI73X6PBI7BF4JTVNRFWPD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GCKSPI73X6PBI7BF4JTVNRFWPD","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":"3b45652c4dc99809492d28a3df3b1d8f898f0ec301b55e2540574eb62e127dd7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-17T17:06:35Z","title_canon_sha256":"493ff600188bb0b68358da88cbc346ab7106722dbbda2a2b6d5f75d837e8d5df"},"schema_version":"1.0","source":{"id":"2004.08347","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.08347","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"2004.08347v4","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.08347","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"GCKSPI73X6PB","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_16","alias_value":"GCKSPI73X6PBI7BF","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_8","alias_value":"GCKSPI73","created_at":"2026-07-05T01:19:01Z"}],"graph_snapshots":[{"event_id":"sha256:43a4a922e3815f1e1118c4f8544b0da9ebae9754acf169b445188d7d57f4321a","target":"graph","created_at":"2026-07-05T01:19:01Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.08347/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A black hole that is ringing down to quiescence emits gravitational radiation of a very specific nature that can inform us of its mass and angular momentum, test the no-hair theorem for black holes, and perhaps even give us additional information about its progenitor system. This paper provides a detailed description of, and investigation into the behavior of, multimode fitting of the ring-down signal provided by numerical simulations. We find that there are at least three well-motivated multimode fitting schemes that can be used. These methods are tested against a specific numerical simulatio","authors_text":"Gregory B. Cook","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-17T17:06:35Z","title":"Aspects of multimode Kerr ring-down fitting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.08347","kind":"arxiv","version":4},"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:a6ebfd27743c8b15d31e693b56adc120fd8e547452c96920e939b5c9ef24daeb","target":"record","created_at":"2026-07-05T01:19:01Z","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":"3b45652c4dc99809492d28a3df3b1d8f898f0ec301b55e2540574eb62e127dd7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-17T17:06:35Z","title_canon_sha256":"493ff600188bb0b68358da88cbc346ab7106722dbbda2a2b6d5f75d837e8d5df"},"schema_version":"1.0","source":{"id":"2004.08347","kind":"arxiv","version":4}},"canonical_sha256":"309527a3fbbf9e147c25e26756c4b678f129def2dbbde9bffb10c5306352d9b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"309527a3fbbf9e147c25e26756c4b678f129def2dbbde9bffb10c5306352d9b3","first_computed_at":"2026-07-05T01:19:01.597161Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:19:01.597161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yTajbGg/CFcDtWTu0TCNiEFArfyDIsoQ8TJ2RsKCQCcbxfepFIOFNV/BaF6kDNYmWrdMTB2e8O/0LQGPdsocDg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:19:01.597767Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.08347","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6ebfd27743c8b15d31e693b56adc120fd8e547452c96920e939b5c9ef24daeb","sha256:43a4a922e3815f1e1118c4f8544b0da9ebae9754acf169b445188d7d57f4321a"],"state_sha256":"4f5e59bb5428898bb9d70fa4a065f62dd7e08dfa6d3d48c88b16752ccb5487ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fzqIM0j7sdAxO4pGF3Onaav1SqvCgrMKX+2svHkjpOXEsYsA8S3Z0aRlLOmH0YR/rz6OVkc8CAKH+/MkNn7+AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T03:22:58.834789Z","bundle_sha256":"91165ad321e8af833c78db7d69152f324003c91d2858a31480e17eccc7ffe585"}}