{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:MNDPGFZGFGCISDEGM6YTVWRVVR","short_pith_number":"pith:MNDPGFZG","canonical_record":{"source":{"id":"2008.00419","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-08-02T07:13:09Z","cross_cats_sorted":[],"title_canon_sha256":"f7821a15bf25594ffb62c0cb8622deece2058111cb0a2191f1c043f01438f6e2","abstract_canon_sha256":"9d8f1540d6c44acc071f8f4bfe514f0f00b5b437a7845f53b47446cafb22890e"},"schema_version":"1.0"},"canonical_sha256":"6346f317262984890c8667b13ada35ac5f8ea32d606da819e5eef792a3cf1ef2","source":{"kind":"arxiv","id":"2008.00419","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.00419","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"arxiv_version","alias_value":"2008.00419v3","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00419","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"pith_short_12","alias_value":"MNDPGFZGFGCI","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"pith_short_16","alias_value":"MNDPGFZGFGCISDEG","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"pith_short_8","alias_value":"MNDPGFZG","created_at":"2026-07-05T03:20:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:MNDPGFZGFGCISDEGM6YTVWRVVR","target":"record","payload":{"canonical_record":{"source":{"id":"2008.00419","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-08-02T07:13:09Z","cross_cats_sorted":[],"title_canon_sha256":"f7821a15bf25594ffb62c0cb8622deece2058111cb0a2191f1c043f01438f6e2","abstract_canon_sha256":"9d8f1540d6c44acc071f8f4bfe514f0f00b5b437a7845f53b47446cafb22890e"},"schema_version":"1.0"},"canonical_sha256":"6346f317262984890c8667b13ada35ac5f8ea32d606da819e5eef792a3cf1ef2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:20:53.282211Z","signature_b64":"zRsFZS6HI7/36PKweoZgtZnvBJSaD61bkDI59OtQ6hSPwKU18LmAiAToGIu9jZPKEJxWiqMa4HB1K5UBJd7EAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6346f317262984890c8667b13ada35ac5f8ea32d606da819e5eef792a3cf1ef2","last_reissued_at":"2026-07-05T03:20:53.281824Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:20:53.281824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.00419","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:20:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P4rmGoGaD2HLna+DPY8KNf0QCmh/ReLnhZd6lPz5inSTG07w1vUZ16D2UJtSzvWAANRIU0vo/miD6qTzAZEtBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:12:00.067667Z"},"content_sha256":"1a6553dabde6f01974d390530e08db6377f650e826bd0c7361c8c62dc25ed752","schema_version":"1.0","event_id":"sha256:1a6553dabde6f01974d390530e08db6377f650e826bd0c7361c8c62dc25ed752"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:MNDPGFZGFGCISDEGM6YTVWRVVR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Avoided crossing in gravitational wave spectra from protoneutron star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Hajime Sotani, Tomoya Takiwaki","submitted_at":"2020-08-02T07:13:09Z","abstract_excerpt":"The ramp up signals of gravitational waves appearing in the numerical simulations could be important signals to estimate parameters of the protoneutron star (PNS) at supernova explosions. To identify the signals with PNS oscillations, we make a linear perturbation analysis and compare the resultant eigenfrequencies with the ramp up signals obtained via the two-dimensional numerical simulations. Then, we find that the ramp up signals correspond well to the $g_1$-mode in the early phase and to the $f$-mode, to which the $g_1$-mode is exchanged via the avoided crossing. We also confirm that the $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00419","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.00419/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:20:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oshu5ZwBRA4Y58Ql5gQnj/EkKzzxXR1nXMqOMPpr204PmZcPzSz2Yx3C3fCfMB6WlbUzM+xYIPWY3m8oeUqQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:12:00.068177Z"},"content_sha256":"ecbf4aa31ea5035ad07247beef6bec20c2ae8f1876f69647da969acc7aa152e4","schema_version":"1.0","event_id":"sha256:ecbf4aa31ea5035ad07247beef6bec20c2ae8f1876f69647da969acc7aa152e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MNDPGFZGFGCISDEGM6YTVWRVVR/bundle.json","state_url":"https://pith.science/pith/MNDPGFZGFGCISDEGM6YTVWRVVR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MNDPGFZGFGCISDEGM6YTVWRVVR/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":"2026-08-08T02:12:00Z","links":{"resolver":"https://pith.science/pith/MNDPGFZGFGCISDEGM6YTVWRVVR","bundle":"https://pith.science/pith/MNDPGFZGFGCISDEGM6YTVWRVVR/bundle.json","state":"https://pith.science/pith/MNDPGFZGFGCISDEGM6YTVWRVVR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MNDPGFZGFGCISDEGM6YTVWRVVR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:MNDPGFZGFGCISDEGM6YTVWRVVR","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":"9d8f1540d6c44acc071f8f4bfe514f0f00b5b437a7845f53b47446cafb22890e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-08-02T07:13:09Z","title_canon_sha256":"f7821a15bf25594ffb62c0cb8622deece2058111cb0a2191f1c043f01438f6e2"},"schema_version":"1.0","source":{"id":"2008.00419","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.00419","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"arxiv_version","alias_value":"2008.00419v3","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00419","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"pith_short_12","alias_value":"MNDPGFZGFGCI","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"pith_short_16","alias_value":"MNDPGFZGFGCISDEG","created_at":"2026-07-05T03:20:53Z"},{"alias_kind":"pith_short_8","alias_value":"MNDPGFZG","created_at":"2026-07-05T03:20:53Z"}],"graph_snapshots":[{"event_id":"sha256:ecbf4aa31ea5035ad07247beef6bec20c2ae8f1876f69647da969acc7aa152e4","target":"graph","created_at":"2026-07-05T03:20:53Z","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/2008.00419/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ramp up signals of gravitational waves appearing in the numerical simulations could be important signals to estimate parameters of the protoneutron star (PNS) at supernova explosions. To identify the signals with PNS oscillations, we make a linear perturbation analysis and compare the resultant eigenfrequencies with the ramp up signals obtained via the two-dimensional numerical simulations. Then, we find that the ramp up signals correspond well to the $g_1$-mode in the early phase and to the $f$-mode, to which the $g_1$-mode is exchanged via the avoided crossing. We also confirm that the $","authors_text":"Hajime Sotani, Tomoya Takiwaki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-08-02T07:13:09Z","title":"Avoided crossing in gravitational wave spectra from protoneutron star"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00419","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":"sha256:1a6553dabde6f01974d390530e08db6377f650e826bd0c7361c8c62dc25ed752","target":"record","created_at":"2026-07-05T03:20:53Z","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":"9d8f1540d6c44acc071f8f4bfe514f0f00b5b437a7845f53b47446cafb22890e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-08-02T07:13:09Z","title_canon_sha256":"f7821a15bf25594ffb62c0cb8622deece2058111cb0a2191f1c043f01438f6e2"},"schema_version":"1.0","source":{"id":"2008.00419","kind":"arxiv","version":3}},"canonical_sha256":"6346f317262984890c8667b13ada35ac5f8ea32d606da819e5eef792a3cf1ef2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6346f317262984890c8667b13ada35ac5f8ea32d606da819e5eef792a3cf1ef2","first_computed_at":"2026-07-05T03:20:53.281824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:20:53.281824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zRsFZS6HI7/36PKweoZgtZnvBJSaD61bkDI59OtQ6hSPwKU18LmAiAToGIu9jZPKEJxWiqMa4HB1K5UBJd7EAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:20:53.282211Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.00419","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1a6553dabde6f01974d390530e08db6377f650e826bd0c7361c8c62dc25ed752","sha256:ecbf4aa31ea5035ad07247beef6bec20c2ae8f1876f69647da969acc7aa152e4"],"state_sha256":"9471ffaf0d480847a4da8cab8682ea8193745629a24eac5d35468b9f67230f73"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m38m71l6iDKR1vWmxysIn2tJLo/kg8RZZ7wLfdyoFsVp26L7qQR+1YuwSadxmdG6EIfliqEee01p5DlmWz5zAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T02:12:00.073787Z","bundle_sha256":"8c8481b261ecc9281454e762561bb916a9b98b3780236bbdd885600fe7de34d0"}}