{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:NH5HQPWMHWPMKSFQFUUIXEJVVB","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":"578adf27ac3a24c1d5eaffe61c0333795c70d758108beb91e4b5f6ecd17f035b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-02-21T20:32:32Z","title_canon_sha256":"44841459e9761957540b9a274cfc3746d0d55ad78e6efbc7bdc304d79bdeda2e"},"schema_version":"1.0","source":{"id":"2502.15921","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.15921","created_at":"2026-07-05T11:37:43Z"},{"alias_kind":"arxiv_version","alias_value":"2502.15921v2","created_at":"2026-07-05T11:37:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.15921","created_at":"2026-07-05T11:37:43Z"},{"alias_kind":"pith_short_12","alias_value":"NH5HQPWMHWPM","created_at":"2026-07-05T11:37:43Z"},{"alias_kind":"pith_short_16","alias_value":"NH5HQPWMHWPMKSFQ","created_at":"2026-07-05T11:37:43Z"},{"alias_kind":"pith_short_8","alias_value":"NH5HQPWM","created_at":"2026-07-05T11:37:43Z"}],"graph_snapshots":[{"event_id":"sha256:2282e63f47c2d1e35a699f651bd72e819ea50528fba75e5c21a34119ca5b0e9f","target":"graph","created_at":"2026-07-05T11:37:43Z","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/2502.15921/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In linear perturbation theory, the ringdown of a gravitational wave (GW) signal is described by a linear combination of quasinormal modes (QNMs). Detecting QNMs from GW signals is a promising way to test GR, central to the developing field of black-hole spectroscopy. More robust black-hole spectroscopy tests could also consider the ringdown amplitude-phase consistency. That requires an accurate understanding of the excitation and stability of the QNM expansion coefficients. In this paper, we investigate the robustness of the extracted $m=2$ QNM coefficients obtained from a high-accuracy numeri","authors_text":"Gregory B. Cook, Harald P. Pfeiffer, Jordan Moxon, Kyle C. Nelli, Lawrence E. Kidder, Leda Gao, Mark A. Scheel, Michael Boyle, Nils Deppe, Nils L. Vu, William Throwe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-02-21T20:32:32Z","title":"Robustness of extracting quasinormal mode information from black hole merger simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.15921","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:db0b522accc446480028c5db41b7c8ef8aaf944ba3ca204fa2102740fa2cf041","target":"record","created_at":"2026-07-05T11:37:43Z","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":"578adf27ac3a24c1d5eaffe61c0333795c70d758108beb91e4b5f6ecd17f035b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-02-21T20:32:32Z","title_canon_sha256":"44841459e9761957540b9a274cfc3746d0d55ad78e6efbc7bdc304d79bdeda2e"},"schema_version":"1.0","source":{"id":"2502.15921","kind":"arxiv","version":2}},"canonical_sha256":"69fa783ecc3d9ec548b02d288b9135a841a1014093191d4816d27bd5a3ecb047","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69fa783ecc3d9ec548b02d288b9135a841a1014093191d4816d27bd5a3ecb047","first_computed_at":"2026-07-05T11:37:43.584407Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:37:43.584407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jQPGX9vLRBAEmc6tRAfzDUbm9GX1q00K2TI4qX4V2+XDkHAsNJdy/Lbf7VXsnWpIc4OJqHHzcNu51fdC6XekAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:37:43.585165Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.15921","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:db0b522accc446480028c5db41b7c8ef8aaf944ba3ca204fa2102740fa2cf041","sha256:2282e63f47c2d1e35a699f651bd72e819ea50528fba75e5c21a34119ca5b0e9f"],"state_sha256":"ed241a848ecfb8dda3bcb8e9e19326fba534297aa7ab616646cfd4952b70062a"}