{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:6HBPVOALBN7QGQEZLK4PBHJXQI","short_pith_number":"pith:6HBPVOAL","canonical_record":{"source":{"id":"0804.0822","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-04T23:38:20Z","cross_cats_sorted":[],"title_canon_sha256":"a06d65a540a1f5dbd09a41fbadcb942e292399b36c89d7e13a898fb6f77a3521","abstract_canon_sha256":"ee1a370004b4bb259daf6678a4f1ebaf2bccb5de3678ecc7e9d5419aa6dd8149"},"schema_version":"1.0"},"canonical_sha256":"f1c2fab80b0b7f0340995ab8f09d37823ac01b575e4e9917145fee0b7241c38d","source":{"kind":"arxiv","id":"0804.0822","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0804.0822","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"arxiv_version","alias_value":"0804.0822v2","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0804.0822","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"pith_short_12","alias_value":"6HBPVOALBN7Q","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"pith_short_16","alias_value":"6HBPVOALBN7QGQEZ","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"pith_short_8","alias_value":"6HBPVOAL","created_at":"2026-07-04T17:10:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:6HBPVOALBN7QGQEZLK4PBHJXQI","target":"record","payload":{"canonical_record":{"source":{"id":"0804.0822","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-04T23:38:20Z","cross_cats_sorted":[],"title_canon_sha256":"a06d65a540a1f5dbd09a41fbadcb942e292399b36c89d7e13a898fb6f77a3521","abstract_canon_sha256":"ee1a370004b4bb259daf6678a4f1ebaf2bccb5de3678ecc7e9d5419aa6dd8149"},"schema_version":"1.0"},"canonical_sha256":"f1c2fab80b0b7f0340995ab8f09d37823ac01b575e4e9917145fee0b7241c38d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:10:13.443447Z","signature_b64":"uu7RT65F2gVeFU17veuTdbNt5LKHyxylo1aFbwE0bHnNjddwdoZswys4l/9BtexxG4CSYgaa/nRz2tFmGuGJCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f1c2fab80b0b7f0340995ab8f09d37823ac01b575e4e9917145fee0b7241c38d","last_reissued_at":"2026-07-04T17:10:13.442885Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:10:13.442885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0804.0822","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:10:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jeWeZYrsj9JCFJODVFuWcx023MPESp5IXw259t/P6u+xXsn4hEgn9wGcIziR+QcKoCH5005DmeePSYn16r87BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:04:50.878203Z"},"content_sha256":"7af17ec88eb327ceff865eebac0d308f74163c7388cf676c0ea701e1cbc04c25","schema_version":"1.0","event_id":"sha256:7af17ec88eb327ceff865eebac0d308f74163c7388cf676c0ea701e1cbc04c25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:6HBPVOALBN7QGQEZLK4PBHJXQI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Different Structures of the Two Classes of Starless Cores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Eric Keto, Paola Caselli","submitted_at":"2008-04-04T23:38:20Z","abstract_excerpt":"We describe a model for the thermal and dynamical equilibrium of starless cores that includes the radiative transfer of the gas and dust and simple CO chemistry. The model shows that the structure and behavior of the cores is significantly different depending on whether the central density is either above or below about 10^5 cm-3. This density is significant as the critical density for gas cooling by gas-dust collisions and also as the critical density for dynamical stability, given the typical properties of the starless cores. The starless cores thus divide into two classes that we refer to a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0804.0822","kind":"arxiv","version":2},"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/0804.0822/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":"2026-07-04T17:10:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NWbIXun2fcUmLzOnIP6atL+PR6OLZZ1LxqoAx6xvW6q7WrA4eNAWm0d4Q5UQzlpz+prBWlrstRb2LRCl2tkFDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:04:50.878744Z"},"content_sha256":"d310620a6c5e30c12a2ccb0c737778f89a14d04c7b2c5eb56f04b3e441165f01","schema_version":"1.0","event_id":"sha256:d310620a6c5e30c12a2ccb0c737778f89a14d04c7b2c5eb56f04b3e441165f01"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6HBPVOALBN7QGQEZLK4PBHJXQI/bundle.json","state_url":"https://pith.science/pith/6HBPVOALBN7QGQEZLK4PBHJXQI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6HBPVOALBN7QGQEZLK4PBHJXQI/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":"2026-08-16T17:04:50Z","links":{"resolver":"https://pith.science/pith/6HBPVOALBN7QGQEZLK4PBHJXQI","bundle":"https://pith.science/pith/6HBPVOALBN7QGQEZLK4PBHJXQI/bundle.json","state":"https://pith.science/pith/6HBPVOALBN7QGQEZLK4PBHJXQI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6HBPVOALBN7QGQEZLK4PBHJXQI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:6HBPVOALBN7QGQEZLK4PBHJXQI","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":"ee1a370004b4bb259daf6678a4f1ebaf2bccb5de3678ecc7e9d5419aa6dd8149","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-04T23:38:20Z","title_canon_sha256":"a06d65a540a1f5dbd09a41fbadcb942e292399b36c89d7e13a898fb6f77a3521"},"schema_version":"1.0","source":{"id":"0804.0822","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0804.0822","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"arxiv_version","alias_value":"0804.0822v2","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0804.0822","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"pith_short_12","alias_value":"6HBPVOALBN7Q","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"pith_short_16","alias_value":"6HBPVOALBN7QGQEZ","created_at":"2026-07-04T17:10:13Z"},{"alias_kind":"pith_short_8","alias_value":"6HBPVOAL","created_at":"2026-07-04T17:10:13Z"}],"graph_snapshots":[{"event_id":"sha256:d310620a6c5e30c12a2ccb0c737778f89a14d04c7b2c5eb56f04b3e441165f01","target":"graph","created_at":"2026-07-04T17:10:13Z","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/0804.0822/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe a model for the thermal and dynamical equilibrium of starless cores that includes the radiative transfer of the gas and dust and simple CO chemistry. The model shows that the structure and behavior of the cores is significantly different depending on whether the central density is either above or below about 10^5 cm-3. This density is significant as the critical density for gas cooling by gas-dust collisions and also as the critical density for dynamical stability, given the typical properties of the starless cores. The starless cores thus divide into two classes that we refer to a","authors_text":"Eric Keto, Paola Caselli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-04T23:38:20Z","title":"The Different Structures of the Two Classes of Starless Cores"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0804.0822","kind":"arxiv","version":2},"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":"sha256:7af17ec88eb327ceff865eebac0d308f74163c7388cf676c0ea701e1cbc04c25","target":"record","created_at":"2026-07-04T17:10:13Z","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":"ee1a370004b4bb259daf6678a4f1ebaf2bccb5de3678ecc7e9d5419aa6dd8149","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-04T23:38:20Z","title_canon_sha256":"a06d65a540a1f5dbd09a41fbadcb942e292399b36c89d7e13a898fb6f77a3521"},"schema_version":"1.0","source":{"id":"0804.0822","kind":"arxiv","version":2}},"canonical_sha256":"f1c2fab80b0b7f0340995ab8f09d37823ac01b575e4e9917145fee0b7241c38d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1c2fab80b0b7f0340995ab8f09d37823ac01b575e4e9917145fee0b7241c38d","first_computed_at":"2026-07-04T17:10:13.442885Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:10:13.442885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uu7RT65F2gVeFU17veuTdbNt5LKHyxylo1aFbwE0bHnNjddwdoZswys4l/9BtexxG4CSYgaa/nRz2tFmGuGJCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:10:13.443447Z","signed_message":"canonical_sha256_bytes"},"source_id":"0804.0822","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7af17ec88eb327ceff865eebac0d308f74163c7388cf676c0ea701e1cbc04c25","sha256:d310620a6c5e30c12a2ccb0c737778f89a14d04c7b2c5eb56f04b3e441165f01"],"state_sha256":"74514aa567886510de1a2761c43f9b68a0a7ef46a6eef5650fd8a847ba0a3a6c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EWbYQpynH6yuMkqIGpGick8ygoJuu9mURMyjcyy9e6fCjT2ej4BjrsMT9mxmpw1Q3OIWjwz/MTJDYqbh74lPBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T17:04:50.882322Z","bundle_sha256":"e5e104a75ebb48d0c6f36d737d359d97a40b99b0042d083214ff64beda17e58b"}}