{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:5PN5H36I73J6W4FVSBILGJWMYR","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":"84b8798d91c84659ce7f51258256307947238eb87cfb583521863f02a71a69f6","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-07-06T07:14:11Z","title_canon_sha256":"f8560ec96ec843b8033ca69de6d48a21f2e7f67464a17cc905e79ec251cf6a94"},"schema_version":"1.0","source":{"id":"1907.03091","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.03091","created_at":"2026-07-05T00:10:39Z"},{"alias_kind":"arxiv_version","alias_value":"1907.03091v3","created_at":"2026-07-05T00:10:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.03091","created_at":"2026-07-05T00:10:39Z"},{"alias_kind":"pith_short_12","alias_value":"5PN5H36I73J6","created_at":"2026-07-05T00:10:39Z"},{"alias_kind":"pith_short_16","alias_value":"5PN5H36I73J6W4FV","created_at":"2026-07-05T00:10:39Z"},{"alias_kind":"pith_short_8","alias_value":"5PN5H36I","created_at":"2026-07-05T00:10:39Z"}],"graph_snapshots":[{"event_id":"sha256:55cc07ee8a6e6510dd17453fc3e817e729bc1682094ca79d5926d44c7ec2edea","target":"graph","created_at":"2026-07-05T00:10:39Z","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/1907.03091/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational-wave echoes in the post-merger signal of a binary coalescence are predicted in various scenarios, including near-horizon quantum structures, exotic states of matter in ultracompact stars, and certain deviations from general relativity. The amplitude and frequency of each echo is modulated by the photon-sphere barrier of the remnant, which acts as a spin- and frequency-dependent high-pass filter, decreasing the frequency content of each subsequent echo. Furthermore, a major fraction of the energy of the echo signal is contained in low-frequency resonances corresponding to the quas","authors_text":"Adriano Testa, Elisa Maggio, Paolo Pani, Swetha Bhagwat","cross_cats":["astro-ph.HE","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-07-06T07:14:11Z","title":"Analytical model for gravitational-wave echoes from spinning remnants"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.03091","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":"sha256:8f3e24cae7bd76ad5885dc5f02756a55031bf048f7b3efa95e3cdbfd83a5c6f9","target":"record","created_at":"2026-07-05T00:10:39Z","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":"84b8798d91c84659ce7f51258256307947238eb87cfb583521863f02a71a69f6","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-07-06T07:14:11Z","title_canon_sha256":"f8560ec96ec843b8033ca69de6d48a21f2e7f67464a17cc905e79ec251cf6a94"},"schema_version":"1.0","source":{"id":"1907.03091","kind":"arxiv","version":3}},"canonical_sha256":"ebdbd3efc8fed3eb70b59050b326ccc46bcfe837bc17c1eb1ecd1b28737a48fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ebdbd3efc8fed3eb70b59050b326ccc46bcfe837bc17c1eb1ecd1b28737a48fd","first_computed_at":"2026-07-05T00:10:39.304543Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:10:39.304543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jq5gZzyYnt7F7abM9Xe2P+A6N8yqwwXBjVj4VpU3ZYnMPxLEjQEtcvYIKqfpdodOsoatMIs2/dEEiavdub9hDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:10:39.305003Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.03091","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f3e24cae7bd76ad5885dc5f02756a55031bf048f7b3efa95e3cdbfd83a5c6f9","sha256:55cc07ee8a6e6510dd17453fc3e817e729bc1682094ca79d5926d44c7ec2edea"],"state_sha256":"7b4eacf9cf5dc4eb17459292d35fce22d64cb613dc5711ad95fcc8206d833fd6"}