{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:ESVZOQ3HVRAFAENPPQRD6WEMDT","short_pith_number":"pith:ESVZOQ3H","canonical_record":{"source":{"id":"astro-ph/9603032","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-03-08T19:43:55Z","cross_cats_sorted":[],"title_canon_sha256":"cf50a4df6c9553b588fc7f15cc57edc67339d0012d3fe6b752175b04c799bee6","abstract_canon_sha256":"208e3a62ba6e1bd123421838cd86211243e3274c173bbe4e4f2502979c5ab4b7"},"schema_version":"1.0"},"canonical_sha256":"24ab974367ac405011af7c223f588c1cdc4070e97d1c73589c1f1230e97e611e","source":{"kind":"arxiv","id":"astro-ph/9603032","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9603032","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9603032v1","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9603032","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"ESVZOQ3HVRAF","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"pith_short_16","alias_value":"ESVZOQ3HVRAFAENP","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"pith_short_8","alias_value":"ESVZOQ3H","created_at":"2026-07-04T15:23:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:ESVZOQ3HVRAFAENPPQRD6WEMDT","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9603032","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-03-08T19:43:55Z","cross_cats_sorted":[],"title_canon_sha256":"cf50a4df6c9553b588fc7f15cc57edc67339d0012d3fe6b752175b04c799bee6","abstract_canon_sha256":"208e3a62ba6e1bd123421838cd86211243e3274c173bbe4e4f2502979c5ab4b7"},"schema_version":"1.0"},"canonical_sha256":"24ab974367ac405011af7c223f588c1cdc4070e97d1c73589c1f1230e97e611e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:23:54.015911Z","signature_b64":"f/0fa/Dafi1xsyUtqNdVSc5xzZ1biF2U6otcBhDaM6kSnrT785UPIb4UDVlb//BJf1WV8UMmjQWjsRkzRLWhBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24ab974367ac405011af7c223f588c1cdc4070e97d1c73589c1f1230e97e611e","last_reissued_at":"2026-07-04T15:23:54.015487Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:23:54.015487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9603032","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":"2026-07-04T15:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KBCWmjAXRR4tiofUBeRhwSEmiN9COzbpnFd6qv5fB3f79TxfPPREWJWHWembTl+ejAcEiW4G+OcT0mtnUPYxDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:28:39.022606Z"},"content_sha256":"dd53ec284867ff700a1f98fd40e592bc37bd7f6e87e3f169e3ef51da76fc60ed","schema_version":"1.0","event_id":"sha256:dd53ec284867ff700a1f98fd40e592bc37bd7f6e87e3f169e3ef51da76fc60ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:ESVZOQ3HVRAFAENPPQRD6WEMDT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Structure of Stationary Photodissociation Fronts","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B.T. Draine (Princeton University Observatory), Frank Bertoldi (Max-Planck-Institut f\\\"ur Extraterrestrische Physik)","submitted_at":"1996-03-08T19:43:55Z","abstract_excerpt":"The structure of stationary photodissociation fronts is revisited. H_2 self- shielding is discussed, including the effects of line overlap. We find that line overlap is important for N(H_2) > 10^{20} cm^{-2}. We compute multiline UV pumping models, and compare these with simple analytic approximations for the effects of self-shielding.\n  The overall fluorescent efficiency of the photodissociation front is obtained for different ratios of chi/n_H (where chi characterizes the intensity of the incident UV) and different dust extinction laws. The dust optical depth tau_{pdr} to the point where 50%"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9603032","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/9603032/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":"2026-07-04T15:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hn3fv6q0l02w9OHswX1G5XKIMOGdJgcelR2ruXsq+SOpfl9c1lvvwFdTgg85/0diWF2NjS71/Ne+z0FhwPSpBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:28:39.023499Z"},"content_sha256":"50a143f1df256e3a1c3177319993240f7b2e88eeb30b751c9112babe1c1eab2b","schema_version":"1.0","event_id":"sha256:50a143f1df256e3a1c3177319993240f7b2e88eeb30b751c9112babe1c1eab2b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT/bundle.json","state_url":"https://pith.science/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT/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":"2026-08-16T17:28:39Z","links":{"resolver":"https://pith.science/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT","bundle":"https://pith.science/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT/bundle.json","state":"https://pith.science/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ESVZOQ3HVRAFAENPPQRD6WEMDT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:ESVZOQ3HVRAFAENPPQRD6WEMDT","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":"208e3a62ba6e1bd123421838cd86211243e3274c173bbe4e4f2502979c5ab4b7","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-03-08T19:43:55Z","title_canon_sha256":"cf50a4df6c9553b588fc7f15cc57edc67339d0012d3fe6b752175b04c799bee6"},"schema_version":"1.0","source":{"id":"astro-ph/9603032","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9603032","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9603032v1","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9603032","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"ESVZOQ3HVRAF","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"pith_short_16","alias_value":"ESVZOQ3HVRAFAENP","created_at":"2026-07-04T15:23:54Z"},{"alias_kind":"pith_short_8","alias_value":"ESVZOQ3H","created_at":"2026-07-04T15:23:54Z"}],"graph_snapshots":[{"event_id":"sha256:50a143f1df256e3a1c3177319993240f7b2e88eeb30b751c9112babe1c1eab2b","target":"graph","created_at":"2026-07-04T15:23:54Z","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/9603032/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The structure of stationary photodissociation fronts is revisited. H_2 self- shielding is discussed, including the effects of line overlap. We find that line overlap is important for N(H_2) > 10^{20} cm^{-2}. We compute multiline UV pumping models, and compare these with simple analytic approximations for the effects of self-shielding.\n  The overall fluorescent efficiency of the photodissociation front is obtained for different ratios of chi/n_H (where chi characterizes the intensity of the incident UV) and different dust extinction laws. The dust optical depth tau_{pdr} to the point where 50%","authors_text":"B.T. Draine (Princeton University Observatory), Frank Bertoldi (Max-Planck-Institut f\\\"ur Extraterrestrische Physik)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-03-08T19:43:55Z","title":"Structure of Stationary Photodissociation Fronts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9603032","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:dd53ec284867ff700a1f98fd40e592bc37bd7f6e87e3f169e3ef51da76fc60ed","target":"record","created_at":"2026-07-04T15:23:54Z","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":"208e3a62ba6e1bd123421838cd86211243e3274c173bbe4e4f2502979c5ab4b7","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-03-08T19:43:55Z","title_canon_sha256":"cf50a4df6c9553b588fc7f15cc57edc67339d0012d3fe6b752175b04c799bee6"},"schema_version":"1.0","source":{"id":"astro-ph/9603032","kind":"arxiv","version":1}},"canonical_sha256":"24ab974367ac405011af7c223f588c1cdc4070e97d1c73589c1f1230e97e611e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24ab974367ac405011af7c223f588c1cdc4070e97d1c73589c1f1230e97e611e","first_computed_at":"2026-07-04T15:23:54.015487Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:54.015487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f/0fa/Dafi1xsyUtqNdVSc5xzZ1biF2U6otcBhDaM6kSnrT785UPIb4UDVlb//BJf1WV8UMmjQWjsRkzRLWhBA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:54.015911Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9603032","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd53ec284867ff700a1f98fd40e592bc37bd7f6e87e3f169e3ef51da76fc60ed","sha256:50a143f1df256e3a1c3177319993240f7b2e88eeb30b751c9112babe1c1eab2b"],"state_sha256":"b43eae2ed9966e01b0b4669879fb825ba32a9265b0d8c1c1282745daf59d5606"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pjfxCStL/zivjGOErO+VcHpTYDltPYrmKAzusKPYxRoaLd9xD9gHpOlRPKZaDYpA1I9FKYNbbDfnYYLiObS1Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T17:28:39.030591Z","bundle_sha256":"3ee4189ae59ad048a111e412387ebc28fc1bc2b7f87f03b96843660d66f31970"}}