{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:DKQYODASECYKRFVF27CISFXMPI","short_pith_number":"pith:DKQYODAS","canonical_record":{"source":{"id":"astro-ph/0401546","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-26T15:54:22Z","cross_cats_sorted":[],"title_canon_sha256":"ca6f09d2cc137b13459d2acbdb8069fcd671894e773aac3c89614de4e17ecb95","abstract_canon_sha256":"2bc9507b47343e4fdefab7341c1c86f507e66f8995bbd35d0fa7a977dcb35a09"},"schema_version":"1.0"},"canonical_sha256":"1aa1870c1220b0a896a5d7c48916ec7a2688f490f55b714d2298ab732d266a81","source":{"kind":"arxiv","id":"astro-ph/0401546","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401546","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401546v1","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401546","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"pith_short_12","alias_value":"DKQYODASECYK","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"pith_short_16","alias_value":"DKQYODASECYKRFVF","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"pith_short_8","alias_value":"DKQYODAS","created_at":"2026-07-04T16:42:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:DKQYODASECYKRFVF27CISFXMPI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0401546","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-26T15:54:22Z","cross_cats_sorted":[],"title_canon_sha256":"ca6f09d2cc137b13459d2acbdb8069fcd671894e773aac3c89614de4e17ecb95","abstract_canon_sha256":"2bc9507b47343e4fdefab7341c1c86f507e66f8995bbd35d0fa7a977dcb35a09"},"schema_version":"1.0"},"canonical_sha256":"1aa1870c1220b0a896a5d7c48916ec7a2688f490f55b714d2298ab732d266a81","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:42:55.208447Z","signature_b64":"xDrMkcOIYTIWsv0nORHbR0XG3J1SK+23gl9jZBHBimwTdmKpjCg025tun5ZUoHyx8qEdiD4fhpFYeVDVGAU1Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1aa1870c1220b0a896a5d7c48916ec7a2688f490f55b714d2298ab732d266a81","last_reissued_at":"2026-07-04T16:42:55.208047Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:42:55.208047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0401546","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":"2026-07-04T16:42:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LPs/jpGTGfj27n0n5HLaC0LIwwTACAK1OFRZIS1c/8DK98H02CTD7aw8H7BGez8aqBJhfpl26tREKlFHvh+IDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:53:19.523131Z"},"content_sha256":"eff3a86719f057c62344977f75f6dd1c486572196f85035576d316a4c4da8511","schema_version":"1.0","event_id":"sha256:eff3a86719f057c62344977f75f6dd1c486572196f85035576d316a4c4da8511"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:DKQYODASECYKRFVF27CISFXMPI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic Stars: Exact Solutions and Stability","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Krsna Dev, Marcelo Gleiser (PRESENTER)","submitted_at":"2004-01-26T15:54:22Z","abstract_excerpt":"I report on recent work concerning the existence and stability of self-gravitating spheres with anisotropic pressure. After presenting new exact solutions, Chandrasekhar's variational formalism for radial perturbations is generalized to anisotropic objects and applied to investigate their stability. It is shown that anisotropy can not only support stars of mass M and radius R with 2M/R > 8/9 and arbitrarily large surface redshifts, but that stable configurations exist for values of the adiabatic index smaller than the corresponding isotropic value."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401546","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/astro-ph/0401546/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":"2026-07-04T16:42:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"geIY3axZelSByom+5cvGFEZlfdVo1yO+bjkvnhbxZMAqH5DBzelsJ39BQbzGmJYHnkFrFX2BxFJQJpqNz5oqBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T02:53:19.523626Z"},"content_sha256":"6844cf72af16d7228cd2b21c93ba2ca484552b870714dbd4180e474b1493739c","schema_version":"1.0","event_id":"sha256:6844cf72af16d7228cd2b21c93ba2ca484552b870714dbd4180e474b1493739c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DKQYODASECYKRFVF27CISFXMPI/bundle.json","state_url":"https://pith.science/pith/DKQYODASECYKRFVF27CISFXMPI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DKQYODASECYKRFVF27CISFXMPI/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":"2026-08-08T02:53:19Z","links":{"resolver":"https://pith.science/pith/DKQYODASECYKRFVF27CISFXMPI","bundle":"https://pith.science/pith/DKQYODASECYKRFVF27CISFXMPI/bundle.json","state":"https://pith.science/pith/DKQYODASECYKRFVF27CISFXMPI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DKQYODASECYKRFVF27CISFXMPI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:DKQYODASECYKRFVF27CISFXMPI","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":"2bc9507b47343e4fdefab7341c1c86f507e66f8995bbd35d0fa7a977dcb35a09","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-26T15:54:22Z","title_canon_sha256":"ca6f09d2cc137b13459d2acbdb8069fcd671894e773aac3c89614de4e17ecb95"},"schema_version":"1.0","source":{"id":"astro-ph/0401546","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401546","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401546v1","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401546","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"pith_short_12","alias_value":"DKQYODASECYK","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"pith_short_16","alias_value":"DKQYODASECYKRFVF","created_at":"2026-07-04T16:42:55Z"},{"alias_kind":"pith_short_8","alias_value":"DKQYODAS","created_at":"2026-07-04T16:42:55Z"}],"graph_snapshots":[{"event_id":"sha256:6844cf72af16d7228cd2b21c93ba2ca484552b870714dbd4180e474b1493739c","target":"graph","created_at":"2026-07-04T16:42:55Z","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/astro-ph/0401546/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"I report on recent work concerning the existence and stability of self-gravitating spheres with anisotropic pressure. After presenting new exact solutions, Chandrasekhar's variational formalism for radial perturbations is generalized to anisotropic objects and applied to investigate their stability. It is shown that anisotropy can not only support stars of mass M and radius R with 2M/R > 8/9 and arbitrarily large surface redshifts, but that stable configurations exist for values of the adiabatic index smaller than the corresponding isotropic value.","authors_text":"Krsna Dev, Marcelo Gleiser (PRESENTER)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-01-26T15:54:22Z","title":"Anisotropic Stars: Exact Solutions and Stability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401546","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:eff3a86719f057c62344977f75f6dd1c486572196f85035576d316a4c4da8511","target":"record","created_at":"2026-07-04T16:42:55Z","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":"2bc9507b47343e4fdefab7341c1c86f507e66f8995bbd35d0fa7a977dcb35a09","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-26T15:54:22Z","title_canon_sha256":"ca6f09d2cc137b13459d2acbdb8069fcd671894e773aac3c89614de4e17ecb95"},"schema_version":"1.0","source":{"id":"astro-ph/0401546","kind":"arxiv","version":1}},"canonical_sha256":"1aa1870c1220b0a896a5d7c48916ec7a2688f490f55b714d2298ab732d266a81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1aa1870c1220b0a896a5d7c48916ec7a2688f490f55b714d2298ab732d266a81","first_computed_at":"2026-07-04T16:42:55.208047Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:42:55.208047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xDrMkcOIYTIWsv0nORHbR0XG3J1SK+23gl9jZBHBimwTdmKpjCg025tun5ZUoHyx8qEdiD4fhpFYeVDVGAU1Bg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:42:55.208447Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0401546","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eff3a86719f057c62344977f75f6dd1c486572196f85035576d316a4c4da8511","sha256:6844cf72af16d7228cd2b21c93ba2ca484552b870714dbd4180e474b1493739c"],"state_sha256":"1f8230a215d6ffe93114966b57f668b4a5903997ec43dea1d3701b1a12fb898d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nEHLJVbd3sz0qh3NdbQdMPKns+CzdJVG0DrBBH8STjMxEjTvMvopOtRybIc95kQtyOrwrFl5DJW/zyVMlm+WBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T02:53:19.527827Z","bundle_sha256":"a3d8772808350137b1c1c60b59d08a81dd0b67d49a913007e809b111121385dc"}}