{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:THOYNEGNGIESNJD6HBPOJR5TVC","short_pith_number":"pith:THOYNEGN","canonical_record":{"source":{"id":"astro-ph/0107464","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-24T18:48:04Z","cross_cats_sorted":[],"title_canon_sha256":"ca85679e3829c8b173530c1dceea70de31f9b51065a694de68b21fcae6be78f0","abstract_canon_sha256":"830cfb0ab78fb3f9f313215346e39f4e74cc61ed2a407bfea78fb938defbdc9a"},"schema_version":"1.0"},"canonical_sha256":"99dd8690cd320926a47e385ee4c7b3a89d6ee0d0f73a8840687f0cb0c6224f20","source":{"kind":"arxiv","id":"astro-ph/0107464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0107464","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0107464v1","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0107464","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"THOYNEGNGIES","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"THOYNEGNGIESNJD6","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"THOYNEGN","created_at":"2026-07-04T16:23:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:THOYNEGNGIESNJD6HBPOJR5TVC","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0107464","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-24T18:48:04Z","cross_cats_sorted":[],"title_canon_sha256":"ca85679e3829c8b173530c1dceea70de31f9b51065a694de68b21fcae6be78f0","abstract_canon_sha256":"830cfb0ab78fb3f9f313215346e39f4e74cc61ed2a407bfea78fb938defbdc9a"},"schema_version":"1.0"},"canonical_sha256":"99dd8690cd320926a47e385ee4c7b3a89d6ee0d0f73a8840687f0cb0c6224f20","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:23:45.525763Z","signature_b64":"2LJl42Ac1gcOkOsv2XNc2kUV5z/RcFv2Cuz5avJlQrbKqdH0oZrHMBPCgFN9xFouW4Kwo7kAuEnOQYsAAuXrDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99dd8690cd320926a47e385ee4c7b3a89d6ee0d0f73a8840687f0cb0c6224f20","last_reissued_at":"2026-07-04T16:23:45.525306Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:23:45.525306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0107464","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":"2026-07-04T16:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l9tjwL33LBpGheTy1DlhFzuOCzpSqGgVH9mbR9EVT0IEDeZUKQiY4QtYxgUY9jTm4hWBB4oMZ0z1oaLyaHaEBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:35:01.337459Z"},"content_sha256":"c82733f2bfdfc7c8d5b4442e159c6079a1989747ee64132577b8bea00a9189e6","schema_version":"1.0","event_id":"sha256:c82733f2bfdfc7c8d5b4442e159c6079a1989747ee64132577b8bea00a9189e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:THOYNEGNGIESNJD6HBPOJR5TVC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral Consequences of Deviation from Spherical Composition Symmetry in Type Ia Supernovae","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Daniel Kasen, David Branch, E. Baron, R. C. Thomas","submitted_at":"2001-07-24T18:48:04Z","abstract_excerpt":"We investigate the prospects for constraining the maximum scale of clumping in composition that is consistent with observed Type Ia supernova flux spectra. Synthetic spectra generated without purely spherical composition symmetry indicate that gross asymmetries make prominent changes to absorption features. Motivated by this, we consider the case of a single unblended line forming in an atmosphere with perturbations of different scales and spatial distributions. Perturbations of about 1% of the area of the photodisk simply weaken the absorption feature by the same amount independent of the lin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0107464","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/0107464/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":"2026-07-04T16:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6pMM+Zu8EM+4hfJgxzHxgKo4jN/1vlfsroy4KnOpWqVjBZK56rkhD2oKi2BOs33P5odazfPhlXSQbCbpHs8fBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:35:01.337962Z"},"content_sha256":"c4dccf58148ad451afabd098661eb06cc030b17937a204e37587f4931f830173","schema_version":"1.0","event_id":"sha256:c4dccf58148ad451afabd098661eb06cc030b17937a204e37587f4931f830173"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/THOYNEGNGIESNJD6HBPOJR5TVC/bundle.json","state_url":"https://pith.science/pith/THOYNEGNGIESNJD6HBPOJR5TVC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/THOYNEGNGIESNJD6HBPOJR5TVC/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":"2026-08-07T07:35:01Z","links":{"resolver":"https://pith.science/pith/THOYNEGNGIESNJD6HBPOJR5TVC","bundle":"https://pith.science/pith/THOYNEGNGIESNJD6HBPOJR5TVC/bundle.json","state":"https://pith.science/pith/THOYNEGNGIESNJD6HBPOJR5TVC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/THOYNEGNGIESNJD6HBPOJR5TVC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:THOYNEGNGIESNJD6HBPOJR5TVC","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":"830cfb0ab78fb3f9f313215346e39f4e74cc61ed2a407bfea78fb938defbdc9a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-24T18:48:04Z","title_canon_sha256":"ca85679e3829c8b173530c1dceea70de31f9b51065a694de68b21fcae6be78f0"},"schema_version":"1.0","source":{"id":"astro-ph/0107464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0107464","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0107464v1","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0107464","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"THOYNEGNGIES","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"THOYNEGNGIESNJD6","created_at":"2026-07-04T16:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"THOYNEGN","created_at":"2026-07-04T16:23:45Z"}],"graph_snapshots":[{"event_id":"sha256:c4dccf58148ad451afabd098661eb06cc030b17937a204e37587f4931f830173","target":"graph","created_at":"2026-07-04T16:23:45Z","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/0107464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the prospects for constraining the maximum scale of clumping in composition that is consistent with observed Type Ia supernova flux spectra. Synthetic spectra generated without purely spherical composition symmetry indicate that gross asymmetries make prominent changes to absorption features. Motivated by this, we consider the case of a single unblended line forming in an atmosphere with perturbations of different scales and spatial distributions. Perturbations of about 1% of the area of the photodisk simply weaken the absorption feature by the same amount independent of the lin","authors_text":"Daniel Kasen, David Branch, E. Baron, R. C. Thomas","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-07-24T18:48:04Z","title":"Spectral Consequences of Deviation from Spherical Composition Symmetry in Type Ia Supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0107464","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:c82733f2bfdfc7c8d5b4442e159c6079a1989747ee64132577b8bea00a9189e6","target":"record","created_at":"2026-07-04T16:23:45Z","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":"830cfb0ab78fb3f9f313215346e39f4e74cc61ed2a407bfea78fb938defbdc9a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-24T18:48:04Z","title_canon_sha256":"ca85679e3829c8b173530c1dceea70de31f9b51065a694de68b21fcae6be78f0"},"schema_version":"1.0","source":{"id":"astro-ph/0107464","kind":"arxiv","version":1}},"canonical_sha256":"99dd8690cd320926a47e385ee4c7b3a89d6ee0d0f73a8840687f0cb0c6224f20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99dd8690cd320926a47e385ee4c7b3a89d6ee0d0f73a8840687f0cb0c6224f20","first_computed_at":"2026-07-04T16:23:45.525306Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:45.525306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2LJl42Ac1gcOkOsv2XNc2kUV5z/RcFv2Cuz5avJlQrbKqdH0oZrHMBPCgFN9xFouW4Kwo7kAuEnOQYsAAuXrDw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:45.525763Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0107464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c82733f2bfdfc7c8d5b4442e159c6079a1989747ee64132577b8bea00a9189e6","sha256:c4dccf58148ad451afabd098661eb06cc030b17937a204e37587f4931f830173"],"state_sha256":"63128462fe3b5bb54eb61d42acec784362a95be5bf9e4125777fdebbfa1fe376"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hgt9+G/+aJ59mYaxbJyjN/PmUwOfSbEbRLOTi33KGYlCNyiwkV1X3f8/k9CQd9HQuiaXkmKt0o049ATtPhnCBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T07:35:01.341951Z","bundle_sha256":"b93f14e705cd2caddc486e5600f0c155330da26d7ab2b340ffc6fa4a4417866b"}}