{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:MDZBBCSL5TOKTG46GH4BQGKNAO","short_pith_number":"pith:MDZBBCSL","canonical_record":{"source":{"id":"0810.5022","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-28T13:50:17Z","cross_cats_sorted":[],"title_canon_sha256":"4381e688c1d29484a60c9efaf00c650e6b3094bb1d7de54ea7f423401410c0df","abstract_canon_sha256":"d3a34b4a23e028ec6b81ec46d8c0f748848e38bdf3b9f027327b0f375d5adf93"},"schema_version":"1.0"},"canonical_sha256":"60f2108a4becdca99b9e31f818194d038e6bd33e45a57a2b5b45dc6f25d01281","source":{"kind":"arxiv","id":"0810.5022","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.5022","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"arxiv_version","alias_value":"0810.5022v1","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.5022","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"pith_short_12","alias_value":"MDZBBCSL5TOK","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"MDZBBCSL5TOKTG46","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"MDZBBCSL","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:MDZBBCSL5TOKTG46GH4BQGKNAO","target":"record","payload":{"canonical_record":{"source":{"id":"0810.5022","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-28T13:50:17Z","cross_cats_sorted":[],"title_canon_sha256":"4381e688c1d29484a60c9efaf00c650e6b3094bb1d7de54ea7f423401410c0df","abstract_canon_sha256":"d3a34b4a23e028ec6b81ec46d8c0f748848e38bdf3b9f027327b0f375d5adf93"},"schema_version":"1.0"},"canonical_sha256":"60f2108a4becdca99b9e31f818194d038e6bd33e45a57a2b5b45dc6f25d01281","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:25.643255Z","signature_b64":"wlA+yBL89pEKLtOVuWqAjBtIVz7JZKQl8agHF/3g/cmHDTc4pOQWqncyT9sldDdj2EXL6uNLfudQN83U0etbAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"60f2108a4becdca99b9e31f818194d038e6bd33e45a57a2b5b45dc6f25d01281","last_reissued_at":"2026-05-18T04:29:25.642862Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:25.642862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.5022","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":"2026-05-18T04:29:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L1rC10PGyT5J5472+48hzrE6exYeRLK9FmDkSCg57oFk+2gVnRkE1xfxEmGyehAoRYD2z3/lSfD6sKETN3f1CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:20:55.701705Z"},"content_sha256":"b613bf121a1ff6abd6dcb078886b09c59c4b68968dab9abeb1a5842552d1f97a","schema_version":"1.0","event_id":"sha256:b613bf121a1ff6abd6dcb078886b09c59c4b68968dab9abeb1a5842552d1f97a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:MDZBBCSL5TOKTG46GH4BQGKNAO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Excitation and damping of p-mode oscillations of alpha Cen B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"G. Houdek, H. Kjeldsen, R. New, T. R. Bedding, W. J. Chaplin, Y. Elsworth","submitted_at":"2008-10-28T13:50:17Z","abstract_excerpt":"This paper presents an analysis of observational data on the p-mode spectrum of the star alpha Cen B and a comparison with theoretical computations of the stochastic excitation and damping of the modes. We find that at frequencies > 4500 micro-Hz, the model damping rates appear to be too weak to explain the observed shape of the power spectral density of alpha Cen B. The conclusion rests on the assumption that most of the disagreement is due to problems modelling the damping rates, not the excitation rates, of the modes. This assumption is supported by a parallel analysis of BiSON Sun-as-a-sta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.5022","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":""},"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":"2026-05-18T04:29:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VX0CbFS4tdlH0FYZX4tlDSFDYTyU1yH69Qz/11/q2cdRRndLd3QxgYLlPIBVgLDS/iww//pH72AmAOylqOVpAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:20:55.702296Z"},"content_sha256":"25dca51df5892ac74e610fd80a043a8618063fe485b1a30d4e37c79ee624e10d","schema_version":"1.0","event_id":"sha256:25dca51df5892ac74e610fd80a043a8618063fe485b1a30d4e37c79ee624e10d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MDZBBCSL5TOKTG46GH4BQGKNAO/bundle.json","state_url":"https://pith.science/pith/MDZBBCSL5TOKTG46GH4BQGKNAO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MDZBBCSL5TOKTG46GH4BQGKNAO/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":"2026-05-25T10:20:55Z","links":{"resolver":"https://pith.science/pith/MDZBBCSL5TOKTG46GH4BQGKNAO","bundle":"https://pith.science/pith/MDZBBCSL5TOKTG46GH4BQGKNAO/bundle.json","state":"https://pith.science/pith/MDZBBCSL5TOKTG46GH4BQGKNAO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MDZBBCSL5TOKTG46GH4BQGKNAO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:MDZBBCSL5TOKTG46GH4BQGKNAO","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":"d3a34b4a23e028ec6b81ec46d8c0f748848e38bdf3b9f027327b0f375d5adf93","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-28T13:50:17Z","title_canon_sha256":"4381e688c1d29484a60c9efaf00c650e6b3094bb1d7de54ea7f423401410c0df"},"schema_version":"1.0","source":{"id":"0810.5022","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.5022","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"arxiv_version","alias_value":"0810.5022v1","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.5022","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"pith_short_12","alias_value":"MDZBBCSL5TOK","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"MDZBBCSL5TOKTG46","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"MDZBBCSL","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:25dca51df5892ac74e610fd80a043a8618063fe485b1a30d4e37c79ee624e10d","target":"graph","created_at":"2026-05-18T04:29:25Z","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":"This paper presents an analysis of observational data on the p-mode spectrum of the star alpha Cen B and a comparison with theoretical computations of the stochastic excitation and damping of the modes. We find that at frequencies > 4500 micro-Hz, the model damping rates appear to be too weak to explain the observed shape of the power spectral density of alpha Cen B. The conclusion rests on the assumption that most of the disagreement is due to problems modelling the damping rates, not the excitation rates, of the modes. This assumption is supported by a parallel analysis of BiSON Sun-as-a-sta","authors_text":"G. Houdek, H. Kjeldsen, R. New, T. R. Bedding, W. J. Chaplin, Y. Elsworth","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-28T13:50:17Z","title":"Excitation and damping of p-mode oscillations of alpha Cen B"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.5022","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:b613bf121a1ff6abd6dcb078886b09c59c4b68968dab9abeb1a5842552d1f97a","target":"record","created_at":"2026-05-18T04:29:25Z","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":"d3a34b4a23e028ec6b81ec46d8c0f748848e38bdf3b9f027327b0f375d5adf93","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-28T13:50:17Z","title_canon_sha256":"4381e688c1d29484a60c9efaf00c650e6b3094bb1d7de54ea7f423401410c0df"},"schema_version":"1.0","source":{"id":"0810.5022","kind":"arxiv","version":1}},"canonical_sha256":"60f2108a4becdca99b9e31f818194d038e6bd33e45a57a2b5b45dc6f25d01281","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60f2108a4becdca99b9e31f818194d038e6bd33e45a57a2b5b45dc6f25d01281","first_computed_at":"2026-05-18T04:29:25.642862Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:25.642862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wlA+yBL89pEKLtOVuWqAjBtIVz7JZKQl8agHF/3g/cmHDTc4pOQWqncyT9sldDdj2EXL6uNLfudQN83U0etbAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:25.643255Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.5022","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b613bf121a1ff6abd6dcb078886b09c59c4b68968dab9abeb1a5842552d1f97a","sha256:25dca51df5892ac74e610fd80a043a8618063fe485b1a30d4e37c79ee624e10d"],"state_sha256":"d47b4ac674dd9d51e5763fc5d3b83c010c38266a9785f0cf52a9a6b4c6df5a87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n2d1nhxYxpCLpsf8MbGo6Z6DeXcEUd9mLYas/LKbSImLbbxHxCxvhQ36CR2/ZLuTgEWhJQKd74qsGDAxtDU7BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T10:20:55.705703Z","bundle_sha256":"b811bad374503950a24426d7058c76de7833096085bdeb0b3f6b478d2de93357"}}