{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:3B3ZWZSJ6HRXLTLQQINYITOE2E","short_pith_number":"pith:3B3ZWZSJ","canonical_record":{"source":{"id":"2403.14315","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-21T11:37:59Z","cross_cats_sorted":[],"title_canon_sha256":"a3227b7ac71533e6e92b3bfc9c7dc59f13d4ef740995c4f78a33238e99ba5b0b","abstract_canon_sha256":"d90caa8195061d77a32a1e82cf9249ba4b4d01270a4a306f8dbdb7b1f4a9da26"},"schema_version":"1.0"},"canonical_sha256":"d8779b6649f1e375cd70821b844dc4d1032802d978b2bc36ef2b4fb8787e03d0","source":{"kind":"arxiv","id":"2403.14315","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.14315","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"arxiv_version","alias_value":"2403.14315v1","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.14315","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"pith_short_12","alias_value":"3B3ZWZSJ6HRX","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"pith_short_16","alias_value":"3B3ZWZSJ6HRXLTLQ","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"pith_short_8","alias_value":"3B3ZWZSJ","created_at":"2026-07-05T07:59:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:3B3ZWZSJ6HRXLTLQQINYITOE2E","target":"record","payload":{"canonical_record":{"source":{"id":"2403.14315","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-21T11:37:59Z","cross_cats_sorted":[],"title_canon_sha256":"a3227b7ac71533e6e92b3bfc9c7dc59f13d4ef740995c4f78a33238e99ba5b0b","abstract_canon_sha256":"d90caa8195061d77a32a1e82cf9249ba4b4d01270a4a306f8dbdb7b1f4a9da26"},"schema_version":"1.0"},"canonical_sha256":"d8779b6649f1e375cd70821b844dc4d1032802d978b2bc36ef2b4fb8787e03d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:59:06.976144Z","signature_b64":"9hgP95X45DDkijXtMz6fv4iEE5k5dJZNVwl6IDealYStAObezyR/OCJfd9pvxAWCkIM2pXVKgBZr5TVieGOHDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8779b6649f1e375cd70821b844dc4d1032802d978b2bc36ef2b4fb8787e03d0","last_reissued_at":"2026-07-05T07:59:06.975718Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:59:06.975718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2403.14315","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:59:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pxTnlUBWBjBHsbaiH6V1h1mc4X18Lwd2o62PjqV9ev6X9cDYXAOutYl6DG3CN1NmhL/+JwSI8dxjv/GT+qz+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:57:54.553804Z"},"content_sha256":"3b8742738c57d3a71b36288aa6cc85153b73902de527f4490bc1782cd13f9ebb","schema_version":"1.0","event_id":"sha256:3b8742738c57d3a71b36288aa6cc85153b73902de527f4490bc1782cd13f9ebb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:3B3ZWZSJ6HRXLTLQQINYITOE2E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Instabilities in the Yellow Hypergiant domain","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Michaela Kraus, Wolfgang Glatzel","submitted_at":"2024-03-21T11:37:59Z","abstract_excerpt":"Yellow Hypergiants (YHGs) are massive stars that are commonly interpreted to be in a post-red supergiant evolutionary state. These objects can undergo outbursts on timescales of decades, which are suspected to be due to instabilities in the envelope. To test this conjecture, the stability of envelope models for YHGs with respect to infinitesimal, radial perturbations is investigated. Violent strange mode instabilities with growth rates in the dynamical regime are identified if the luminosity to mass ratio exceeds $\\approx 10^4$ in solar units. For the observed parameters of YHGs we thus predic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.14315","kind":"arxiv","version":1},"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/2403.14315/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":"2026-07-05T07:59:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ERipKZvn2YRXzJwVNpQj90LdWtXiECiJZGTkKJ9qXI3+zsxNaxIZcAXCp5/cCtU8T96F0jOlbbJR4Fyj2amCBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:57:54.555019Z"},"content_sha256":"280f13d5f5a3af0d403e5b277d6eb3c9ccb8a624feb9c929c3d54bf132f31b2e","schema_version":"1.0","event_id":"sha256:280f13d5f5a3af0d403e5b277d6eb3c9ccb8a624feb9c929c3d54bf132f31b2e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E/bundle.json","state_url":"https://pith.science/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E/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":"2026-08-14T15:57:54Z","links":{"resolver":"https://pith.science/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E","bundle":"https://pith.science/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E/bundle.json","state":"https://pith.science/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3B3ZWZSJ6HRXLTLQQINYITOE2E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:3B3ZWZSJ6HRXLTLQQINYITOE2E","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":"d90caa8195061d77a32a1e82cf9249ba4b4d01270a4a306f8dbdb7b1f4a9da26","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-21T11:37:59Z","title_canon_sha256":"a3227b7ac71533e6e92b3bfc9c7dc59f13d4ef740995c4f78a33238e99ba5b0b"},"schema_version":"1.0","source":{"id":"2403.14315","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.14315","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"arxiv_version","alias_value":"2403.14315v1","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.14315","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"pith_short_12","alias_value":"3B3ZWZSJ6HRX","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"pith_short_16","alias_value":"3B3ZWZSJ6HRXLTLQ","created_at":"2026-07-05T07:59:06Z"},{"alias_kind":"pith_short_8","alias_value":"3B3ZWZSJ","created_at":"2026-07-05T07:59:06Z"}],"graph_snapshots":[{"event_id":"sha256:280f13d5f5a3af0d403e5b277d6eb3c9ccb8a624feb9c929c3d54bf132f31b2e","target":"graph","created_at":"2026-07-05T07:59:06Z","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/2403.14315/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Yellow Hypergiants (YHGs) are massive stars that are commonly interpreted to be in a post-red supergiant evolutionary state. These objects can undergo outbursts on timescales of decades, which are suspected to be due to instabilities in the envelope. To test this conjecture, the stability of envelope models for YHGs with respect to infinitesimal, radial perturbations is investigated. Violent strange mode instabilities with growth rates in the dynamical regime are identified if the luminosity to mass ratio exceeds $\\approx 10^4$ in solar units. For the observed parameters of YHGs we thus predic","authors_text":"Michaela Kraus, Wolfgang Glatzel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-21T11:37:59Z","title":"Instabilities in the Yellow Hypergiant domain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.14315","kind":"arxiv","version":1},"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":"sha256:3b8742738c57d3a71b36288aa6cc85153b73902de527f4490bc1782cd13f9ebb","target":"record","created_at":"2026-07-05T07:59:06Z","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":"d90caa8195061d77a32a1e82cf9249ba4b4d01270a4a306f8dbdb7b1f4a9da26","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-03-21T11:37:59Z","title_canon_sha256":"a3227b7ac71533e6e92b3bfc9c7dc59f13d4ef740995c4f78a33238e99ba5b0b"},"schema_version":"1.0","source":{"id":"2403.14315","kind":"arxiv","version":1}},"canonical_sha256":"d8779b6649f1e375cd70821b844dc4d1032802d978b2bc36ef2b4fb8787e03d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8779b6649f1e375cd70821b844dc4d1032802d978b2bc36ef2b4fb8787e03d0","first_computed_at":"2026-07-05T07:59:06.975718Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:59:06.975718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9hgP95X45DDkijXtMz6fv4iEE5k5dJZNVwl6IDealYStAObezyR/OCJfd9pvxAWCkIM2pXVKgBZr5TVieGOHDw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:59:06.976144Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.14315","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3b8742738c57d3a71b36288aa6cc85153b73902de527f4490bc1782cd13f9ebb","sha256:280f13d5f5a3af0d403e5b277d6eb3c9ccb8a624feb9c929c3d54bf132f31b2e"],"state_sha256":"f305362186827b07eb4fa5d7694c8506ecf44ab50dad268422c2843a0efe0ad6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AtVm5c8/ZwWQ4UBJFmPSHeq5kL1ILLTLXtYdDvpTpFsRRFIqb5BA5YkiQnwLCYfkW+TtbYmHKP3N78LNDOrsBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T15:57:54.629894Z","bundle_sha256":"7d2853e09699d98fc2c013033048bc061a34b50911b9cbcb6214a446e722fff5"}}