{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:X322SAWW4DYCORKGXPQ7LILF72","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":"be337572b1982831cffc2c19d05eedbe1b6109957b4f3b0e863aae1a41e04306","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-11-04T16:54:55Z","title_canon_sha256":"e100b27d242f0826761571f83ea079b19e867eebfe11d462e2eb7eb820534a97"},"schema_version":"1.0","source":{"id":"2411.02264","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.02264","created_at":"2026-07-05T09:50:53Z"},{"alias_kind":"arxiv_version","alias_value":"2411.02264v2","created_at":"2026-07-05T09:50:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.02264","created_at":"2026-07-05T09:50:53Z"},{"alias_kind":"pith_short_12","alias_value":"X322SAWW4DYC","created_at":"2026-07-05T09:50:53Z"},{"alias_kind":"pith_short_16","alias_value":"X322SAWW4DYCORKG","created_at":"2026-07-05T09:50:53Z"},{"alias_kind":"pith_short_8","alias_value":"X322SAWW","created_at":"2026-07-05T09:50:53Z"}],"graph_snapshots":[{"event_id":"sha256:ef0d80f1084f632cbaa7a9f80683510831844e50371daf27d256bb0645e9388e","target":"graph","created_at":"2026-07-05T09:50:53Z","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/2411.02264/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The future detection of quasi-normal modes (QNMs) from black hole ringdown will allow for consistency and independent tests of general relativity (GR) in the strong-field regime. In this paper, we perform a ringdown Fisher forecast when including the dominant quadratic QNM (QQNM) expected in nearly equal-mass quasi-circular binary black holes (BBHs) observed by next-generation ground-based detectors, Einstein Telescope (ET) and Cosmic Explorer (CE). We consider a ringdown model with a total of four modes: three linear QNMs labeled by $(\\ell m n)=(220), (330), (440)$ and one QQNM coming from th","authors_text":"Jordi Rafecas-Ventosa, Lam Hui, Macarena Lagos, Tom\\'as Andrade","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-11-04T16:54:55Z","title":"Black hole spectroscopy with nonlinear quasi-normal modes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.02264","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":"sha256:9de0d43123979ee9a3a443779f6a3dd76de1c3efc475e683162cf89180bac1f3","target":"record","created_at":"2026-07-05T09:50:53Z","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":"be337572b1982831cffc2c19d05eedbe1b6109957b4f3b0e863aae1a41e04306","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-11-04T16:54:55Z","title_canon_sha256":"e100b27d242f0826761571f83ea079b19e867eebfe11d462e2eb7eb820534a97"},"schema_version":"1.0","source":{"id":"2411.02264","kind":"arxiv","version":2}},"canonical_sha256":"bef5a902d6e0f0274546bbe1f5a165feaea27864a5ad0cae8e90161f76fd1b00","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bef5a902d6e0f0274546bbe1f5a165feaea27864a5ad0cae8e90161f76fd1b00","first_computed_at":"2026-07-05T09:50:53.619338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:50:53.619338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ei3ytidTatfzExjmolS18czqR2IlvX8SqZEfeI7GrCmKJcJfbi+jLoKp29GzdY4A9ljNIUMZi/YqaWdZGHlXCw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:50:53.619906Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.02264","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9de0d43123979ee9a3a443779f6a3dd76de1c3efc475e683162cf89180bac1f3","sha256:ef0d80f1084f632cbaa7a9f80683510831844e50371daf27d256bb0645e9388e"],"state_sha256":"778daf0bb3809fbd8263f416ee1ac7bf9e1892bcf8750ff74bd2e5409b510f87"}