{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:52WSEQE46RSH3PKFZ6DRRIWF4R","short_pith_number":"pith:52WSEQE4","canonical_record":{"source":{"id":"1904.07639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-16T13:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"2beefedfe4e2c4a5348bc59c0a8ad92f9f4c9fcc93112e4eeb35325f0b1e0511","abstract_canon_sha256":"eb73b15e1f06c1705cbb2e5c69dd40eba11e57a7d46907e6092a9faad1525dba"},"schema_version":"1.0"},"canonical_sha256":"eead22409cf4647dbd45cf8718a2c5e466085a3fefa7c5c8dc023c1b7017f8f3","source":{"kind":"arxiv","id":"1904.07639","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.07639","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"arxiv_version","alias_value":"1904.07639v1","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.07639","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"pith_short_12","alias_value":"52WSEQE46RSH","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"52WSEQE46RSH3PKF","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"52WSEQE4","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:52WSEQE46RSH3PKFZ6DRRIWF4R","target":"record","payload":{"canonical_record":{"source":{"id":"1904.07639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-16T13:13:07Z","cross_cats_sorted":[],"title_canon_sha256":"2beefedfe4e2c4a5348bc59c0a8ad92f9f4c9fcc93112e4eeb35325f0b1e0511","abstract_canon_sha256":"eb73b15e1f06c1705cbb2e5c69dd40eba11e57a7d46907e6092a9faad1525dba"},"schema_version":"1.0"},"canonical_sha256":"eead22409cf4647dbd45cf8718a2c5e466085a3fefa7c5c8dc023c1b7017f8f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:54.276925Z","signature_b64":"VhtY70XGETv/oEflEml2EN8PaeeJ7oB23CbVtaLoDYNDcGq3XV8w3lUmKakFws9wFeAZGpxQ85dNBaNS8sNXAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eead22409cf4647dbd45cf8718a2c5e466085a3fefa7c5c8dc023c1b7017f8f3","last_reissued_at":"2026-05-17T23:44:54.276083Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:54.276083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.07639","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":"2026-05-17T23:44:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WQZ4WX0jkC/lDIyTz6NynLsxzK0YiU2Fxy77hml5eD8rxGP11LlQx1S+FOlJHwvWuIFlj+lBG66IdVh4iUqaAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:17:21.792877Z"},"content_sha256":"b2b02d5705b26d0b7fa8c7bb220a50c66792b515d1180e6a65a320800c98eb07","schema_version":"1.0","event_id":"sha256:b2b02d5705b26d0b7fa8c7bb220a50c66792b515d1180e6a65a320800c98eb07"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:52WSEQE46RSH3PKFZ6DRRIWF4R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational signatures of end-dominated collapse in the S242 filamentary structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Devendra K. Ojha, Igor I. Zinchenko, Lev E. Pirogov, Lokesh K. Dewangan, Olga L. Ryabukhina","submitted_at":"2019-04-16T13:13:07Z","abstract_excerpt":"We present new CO (13CO(1-0) and C18O(1-0)) and CS(2-1) line observations of an elongated filamentary structure (length ~30 pc) in the star-forming site S242, which were taken with the OSO-20m telescope. One filament's end hosts the S242 HII region, while the other end contains Planck cold clumps. Several sub-regions are identified in the filament, and are supersonic with Mach number of 2.7-4.0. The study of the dynamical states shows supercritical nature of the sub-regions (except central part), which could not be supported by a combination of thermal and turbulent motions. Young stellar obje"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.07639","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":"2026-05-17T23:44:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hRgAceIsLBJuzYR4RadxS4IAAzzOtqoBhG+Tc7TM7MYKwCL9b/TKHR2RTXdru93ri/C5cdt6Z9t9or7YEpd3Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:17:21.793537Z"},"content_sha256":"a9213a45ba7dfdc18d7b3a3b157f0f1ac1e1cbd145c5abcac5ef283e33c43000","schema_version":"1.0","event_id":"sha256:a9213a45ba7dfdc18d7b3a3b157f0f1ac1e1cbd145c5abcac5ef283e33c43000"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/52WSEQE46RSH3PKFZ6DRRIWF4R/bundle.json","state_url":"https://pith.science/pith/52WSEQE46RSH3PKFZ6DRRIWF4R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/52WSEQE46RSH3PKFZ6DRRIWF4R/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":"2026-05-31T03:17:21Z","links":{"resolver":"https://pith.science/pith/52WSEQE46RSH3PKFZ6DRRIWF4R","bundle":"https://pith.science/pith/52WSEQE46RSH3PKFZ6DRRIWF4R/bundle.json","state":"https://pith.science/pith/52WSEQE46RSH3PKFZ6DRRIWF4R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/52WSEQE46RSH3PKFZ6DRRIWF4R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:52WSEQE46RSH3PKFZ6DRRIWF4R","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":"eb73b15e1f06c1705cbb2e5c69dd40eba11e57a7d46907e6092a9faad1525dba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-16T13:13:07Z","title_canon_sha256":"2beefedfe4e2c4a5348bc59c0a8ad92f9f4c9fcc93112e4eeb35325f0b1e0511"},"schema_version":"1.0","source":{"id":"1904.07639","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.07639","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"arxiv_version","alias_value":"1904.07639v1","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.07639","created_at":"2026-05-17T23:44:54Z"},{"alias_kind":"pith_short_12","alias_value":"52WSEQE46RSH","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"52WSEQE46RSH3PKF","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"52WSEQE4","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:a9213a45ba7dfdc18d7b3a3b157f0f1ac1e1cbd145c5abcac5ef283e33c43000","target":"graph","created_at":"2026-05-17T23:44:54Z","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"},"paper":{"abstract_excerpt":"We present new CO (13CO(1-0) and C18O(1-0)) and CS(2-1) line observations of an elongated filamentary structure (length ~30 pc) in the star-forming site S242, which were taken with the OSO-20m telescope. One filament's end hosts the S242 HII region, while the other end contains Planck cold clumps. Several sub-regions are identified in the filament, and are supersonic with Mach number of 2.7-4.0. The study of the dynamical states shows supercritical nature of the sub-regions (except central part), which could not be supported by a combination of thermal and turbulent motions. Young stellar obje","authors_text":"Devendra K. Ojha, Igor I. Zinchenko, Lev E. Pirogov, Lokesh K. Dewangan, Olga L. Ryabukhina","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-16T13:13:07Z","title":"Observational signatures of end-dominated collapse in the S242 filamentary structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.07639","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:b2b02d5705b26d0b7fa8c7bb220a50c66792b515d1180e6a65a320800c98eb07","target":"record","created_at":"2026-05-17T23:44:54Z","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":"eb73b15e1f06c1705cbb2e5c69dd40eba11e57a7d46907e6092a9faad1525dba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-16T13:13:07Z","title_canon_sha256":"2beefedfe4e2c4a5348bc59c0a8ad92f9f4c9fcc93112e4eeb35325f0b1e0511"},"schema_version":"1.0","source":{"id":"1904.07639","kind":"arxiv","version":1}},"canonical_sha256":"eead22409cf4647dbd45cf8718a2c5e466085a3fefa7c5c8dc023c1b7017f8f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eead22409cf4647dbd45cf8718a2c5e466085a3fefa7c5c8dc023c1b7017f8f3","first_computed_at":"2026-05-17T23:44:54.276083Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:54.276083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VhtY70XGETv/oEflEml2EN8PaeeJ7oB23CbVtaLoDYNDcGq3XV8w3lUmKakFws9wFeAZGpxQ85dNBaNS8sNXAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:54.276925Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.07639","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b2b02d5705b26d0b7fa8c7bb220a50c66792b515d1180e6a65a320800c98eb07","sha256:a9213a45ba7dfdc18d7b3a3b157f0f1ac1e1cbd145c5abcac5ef283e33c43000"],"state_sha256":"6b312005933324918aa93988cb31a3054db07cd5a6b11be6dc4522f173153d5f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EHrQ2zpgGDghbnTdPJSinEVQT7NEzYLMuzQaRLhVfKTDlQk0h6AkJ1Dq7r+Cdw5qFOwjXMu9A/YiB9eYh2j5AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:17:21.796613Z","bundle_sha256":"0aa5ececa73ac6e626a9d7be45939ce42080d37846f01310437e3885caf543c7"}}