{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6O2ZWQ4DYINK2XPQTJ3YT4RNKI","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":"20cf72c09483b420a32721bd693c6fbe27df2a91a7e68c3ef3023f0306bb645e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-07T18:02:59Z","title_canon_sha256":"7d7848333734505344586c0858bd4d4d5377558d4434d5d8ee98d44c75ae7458"},"schema_version":"1.0","source":{"id":"2105.03451","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.03451","created_at":"2026-07-05T04:29:50Z"},{"alias_kind":"arxiv_version","alias_value":"2105.03451v3","created_at":"2026-07-05T04:29:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.03451","created_at":"2026-07-05T04:29:50Z"},{"alias_kind":"pith_short_12","alias_value":"6O2ZWQ4DYINK","created_at":"2026-07-05T04:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"6O2ZWQ4DYINK2XPQ","created_at":"2026-07-05T04:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"6O2ZWQ4D","created_at":"2026-07-05T04:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:ef56f472853db5800606d9f06f37118c60924a6b82814adda12415ffd8d0e815","target":"graph","created_at":"2026-07-05T04:29:50Z","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/2105.03451/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Black hole (BH) spectroscopy has emerged as a powerful approach to extract spacetime information from gravitational wave (GW) observed signals. Yet, quasinormal mode (QNM) spectral instability under high wave-number perturbations has been recently shown to be a common classical general relativistic phenomenon [1]. This requires to assess its impact on the BH QNM spectrum, in particular on BH QNM overtone frequencies. We conclude: i) perturbed BH QNM overtones are indeed potentially observable in the GW waveform, providing information on small-scale environment BH physics, and ii) their detecti","authors_text":"Jos\\'e Luis Jaramillo, Lamis Al Sheikh, Rodrigo Panosso Macedo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-07T18:02:59Z","title":"Gravitational wave signatures of black hole quasi-normal mode instability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.03451","kind":"arxiv","version":3},"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":"sha256:706b5d0de9eca1248c73dc76138b7271725d3af7ee2f9e16276d859dc8d6b3ab","target":"record","created_at":"2026-07-05T04:29:50Z","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":"20cf72c09483b420a32721bd693c6fbe27df2a91a7e68c3ef3023f0306bb645e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-07T18:02:59Z","title_canon_sha256":"7d7848333734505344586c0858bd4d4d5377558d4434d5d8ee98d44c75ae7458"},"schema_version":"1.0","source":{"id":"2105.03451","kind":"arxiv","version":3}},"canonical_sha256":"f3b59b4383c21aad5df09a7789f22d520d36f1792c4f7624f2251483be4b80a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3b59b4383c21aad5df09a7789f22d520d36f1792c4f7624f2251483be4b80a7","first_computed_at":"2026-07-05T04:29:50.074858Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:29:50.074858Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jXaRzjuF/dwmTepPpT9Mqk4qei3rKzA99px2EN/R0DKhQGzv5Mp3c6nsqN0WBMXc65owR2+nDlGzxqY5N3N2Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:29:50.075277Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.03451","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:706b5d0de9eca1248c73dc76138b7271725d3af7ee2f9e16276d859dc8d6b3ab","sha256:ef56f472853db5800606d9f06f37118c60924a6b82814adda12415ffd8d0e815"],"state_sha256":"5dfb246ef1b7a51292e13e56be5139f1c57f47c309b9f44dd1b06cbc40b6c320"}