{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2YU2DRU7QP3LJYPH376YXBY4A7","short_pith_number":"pith:2YU2DRU7","canonical_record":{"source":{"id":"2004.06434","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-14T11:48:35Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"64ce0934509c41c9e8b1f6351ed0583d1c7d3ec488f0f62889d103e631da489d","abstract_canon_sha256":"5894cfd4180b13f5f58eae96e0b3d5232796dd7167f3fe78a401eb14a61787b8"},"schema_version":"1.0"},"canonical_sha256":"d629a1c69f83f6b4e1e7dffd8b871c07c5360e1274303109cd6c2d16636fa123","source":{"kind":"arxiv","id":"2004.06434","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.06434","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"arxiv_version","alias_value":"2004.06434v4","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.06434","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"pith_short_12","alias_value":"2YU2DRU7QP3L","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"pith_short_16","alias_value":"2YU2DRU7QP3LJYPH","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"pith_short_8","alias_value":"2YU2DRU7","created_at":"2026-05-18T15:36:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2YU2DRU7QP3LJYPH376YXBY4A7","target":"record","payload":{"canonical_record":{"source":{"id":"2004.06434","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-14T11:48:35Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"64ce0934509c41c9e8b1f6351ed0583d1c7d3ec488f0f62889d103e631da489d","abstract_canon_sha256":"5894cfd4180b13f5f58eae96e0b3d5232796dd7167f3fe78a401eb14a61787b8"},"schema_version":"1.0"},"canonical_sha256":"d629a1c69f83f6b4e1e7dffd8b871c07c5360e1274303109cd6c2d16636fa123","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T15:36:03.219119Z","signature_b64":"rF2ypGdU33LGeqnYPh59UHmvWZi4r3WdrbJrkSUZA2dW/iU0mamvxnMg5vT7jLrV3VzC9TnrB4qqwB5xdLEtBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d629a1c69f83f6b4e1e7dffd8b871c07c5360e1274303109cd6c2d16636fa123","last_reissued_at":"2026-05-18T15:36:03.216231Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T15:36:03.216231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.06434","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":"2026-05-18T15:36:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ETUZm4XmL9FD0iT2CNl7AKdq5e3QdbO5DH+T/1LpNgibHegpEc7Asgz/Wb0vu8RcuQO66eY00uBc9KrHe/XHBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T05:37:06.348801Z"},"content_sha256":"2079341769fec12bd5ff26ab33adb30988a94617debdf6e0136bd28af35211a8","schema_version":"1.0","event_id":"sha256:2079341769fec12bd5ff26ab33adb30988a94617debdf6e0136bd28af35211a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2YU2DRU7QP3LJYPH376YXBY4A7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pseudospectrum and black hole quasi-normal mode (in)stability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"Jos\\'e Luis Jaramillo, Lamis Al Sheikh, Rodrigo Panosso Macedo","submitted_at":"2020-04-14T11:48:35Z","abstract_excerpt":"We study the stability of quasinormal modes (QNM) in asymptotically flat black hole spacetimes by means of a pseudospectrum analysis. The construction of the Schwarzschild QNM pseudospectrum reveals the following: (i) the stability of the slowest-decaying QNM under perturbations respecting the asymptotic structure, reassessing the instability of the fundamental QNM discussed by Nollert [H. P. Nollert, About the Significance of Quasinormal Modes of Black Holes, Phys. Rev. D 53, 4397 (1996)] as an \"infrared\" effect; (ii) the instability of all overtones under small-scale (\"ultraviolet\") perturba"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.06434","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":""},"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":"2026-05-18T15:36:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BJMSCLAk5LZVOdHFFqSPaowi+N6TB1bNorsHwpMQbRUH42BJvsQLF2WrWj4uCkX6OAOMZu1+dnAZ02WkIc7VAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T05:37:06.349504Z"},"content_sha256":"30e9d860a887320aab4d1de7dff585594fd9ea8af1314771f7b0f5f351eaa30c","schema_version":"1.0","event_id":"sha256:30e9d860a887320aab4d1de7dff585594fd9ea8af1314771f7b0f5f351eaa30c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2YU2DRU7QP3LJYPH376YXBY4A7/bundle.json","state_url":"https://pith.science/pith/2YU2DRU7QP3LJYPH376YXBY4A7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2YU2DRU7QP3LJYPH376YXBY4A7/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":"2026-05-22T05:37:06Z","links":{"resolver":"https://pith.science/pith/2YU2DRU7QP3LJYPH376YXBY4A7","bundle":"https://pith.science/pith/2YU2DRU7QP3LJYPH376YXBY4A7/bundle.json","state":"https://pith.science/pith/2YU2DRU7QP3LJYPH376YXBY4A7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2YU2DRU7QP3LJYPH376YXBY4A7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2YU2DRU7QP3LJYPH376YXBY4A7","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":"5894cfd4180b13f5f58eae96e0b3d5232796dd7167f3fe78a401eb14a61787b8","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-14T11:48:35Z","title_canon_sha256":"64ce0934509c41c9e8b1f6351ed0583d1c7d3ec488f0f62889d103e631da489d"},"schema_version":"1.0","source":{"id":"2004.06434","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.06434","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"arxiv_version","alias_value":"2004.06434v4","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.06434","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"pith_short_12","alias_value":"2YU2DRU7QP3L","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"pith_short_16","alias_value":"2YU2DRU7QP3LJYPH","created_at":"2026-05-18T15:36:03Z"},{"alias_kind":"pith_short_8","alias_value":"2YU2DRU7","created_at":"2026-05-18T15:36:03Z"}],"graph_snapshots":[{"event_id":"sha256:30e9d860a887320aab4d1de7dff585594fd9ea8af1314771f7b0f5f351eaa30c","target":"graph","created_at":"2026-05-18T15:36:03Z","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"},"paper":{"abstract_excerpt":"We study the stability of quasinormal modes (QNM) in asymptotically flat black hole spacetimes by means of a pseudospectrum analysis. The construction of the Schwarzschild QNM pseudospectrum reveals the following: (i) the stability of the slowest-decaying QNM under perturbations respecting the asymptotic structure, reassessing the instability of the fundamental QNM discussed by Nollert [H. P. Nollert, About the Significance of Quasinormal Modes of Black Holes, Phys. Rev. D 53, 4397 (1996)] as an \"infrared\" effect; (ii) the instability of all overtones under small-scale (\"ultraviolet\") perturba","authors_text":"Jos\\'e Luis Jaramillo, Lamis Al Sheikh, Rodrigo Panosso Macedo","cross_cats":["hep-th","math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-14T11:48:35Z","title":"Pseudospectrum and black hole quasi-normal mode (in)stability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.06434","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":"sha256:2079341769fec12bd5ff26ab33adb30988a94617debdf6e0136bd28af35211a8","target":"record","created_at":"2026-05-18T15:36:03Z","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":"5894cfd4180b13f5f58eae96e0b3d5232796dd7167f3fe78a401eb14a61787b8","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-04-14T11:48:35Z","title_canon_sha256":"64ce0934509c41c9e8b1f6351ed0583d1c7d3ec488f0f62889d103e631da489d"},"schema_version":"1.0","source":{"id":"2004.06434","kind":"arxiv","version":4}},"canonical_sha256":"d629a1c69f83f6b4e1e7dffd8b871c07c5360e1274303109cd6c2d16636fa123","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d629a1c69f83f6b4e1e7dffd8b871c07c5360e1274303109cd6c2d16636fa123","first_computed_at":"2026-05-18T15:36:03.216231Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T15:36:03.216231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rF2ypGdU33LGeqnYPh59UHmvWZi4r3WdrbJrkSUZA2dW/iU0mamvxnMg5vT7jLrV3VzC9TnrB4qqwB5xdLEtBA==","signature_status":"signed_v1","signed_at":"2026-05-18T15:36:03.219119Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.06434","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2079341769fec12bd5ff26ab33adb30988a94617debdf6e0136bd28af35211a8","sha256:30e9d860a887320aab4d1de7dff585594fd9ea8af1314771f7b0f5f351eaa30c"],"state_sha256":"734c293d01a43d5127d8a56a120d66d3179fe754ebdd4779e1930e598c1d0b06"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1/riFPz1cX8hHyvHma2jOxYBL4N+TiNz2WWLbJF79WODl5pJGJ+82/SsR7Inl5AdgDakMgZAOVEwtKaxLCAyCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T05:37:06.353187Z","bundle_sha256":"d82beb13171ead7b0e2de3e68b3d80c1487f1c1294d349c266331644bcac61e5"}}