{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DNGX67PVANS5ZYTERCFF5G3MB5","short_pith_number":"pith:DNGX67PV","canonical_record":{"source":{"id":"1808.03459","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-10T08:59:48Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"d0f62649ab3799475810e1760bd2db85a70971edc4e2dfd5c335942c9a367b47","abstract_canon_sha256":"076fad9a198f86b7531aa67df8222c9b4c1cf85072a446b14b824d9abac6d171"},"schema_version":"1.0"},"canonical_sha256":"1b4d7f7df50365dce264888a5e9b6c0f595c61bd8e4ea7d068d3ea2d0ccbbdea","source":{"kind":"arxiv","id":"1808.03459","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03459","created_at":"2026-05-18T00:03:45Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03459v1","created_at":"2026-05-18T00:03:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03459","created_at":"2026-05-18T00:03:45Z"},{"alias_kind":"pith_short_12","alias_value":"DNGX67PVANS5","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DNGX67PVANS5ZYTE","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DNGX67PV","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DNGX67PVANS5ZYTERCFF5G3MB5","target":"record","payload":{"canonical_record":{"source":{"id":"1808.03459","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-10T08:59:48Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"d0f62649ab3799475810e1760bd2db85a70971edc4e2dfd5c335942c9a367b47","abstract_canon_sha256":"076fad9a198f86b7531aa67df8222c9b4c1cf85072a446b14b824d9abac6d171"},"schema_version":"1.0"},"canonical_sha256":"1b4d7f7df50365dce264888a5e9b6c0f595c61bd8e4ea7d068d3ea2d0ccbbdea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:45.684612Z","signature_b64":"9VdhxPZ2MvdClVva6S+sP3eNBCf43FPB6j69QSmCumElHs2B1OqQMXRgDezXkK/uWt07dZopcBoR0DlDM+aiCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b4d7f7df50365dce264888a5e9b6c0f595c61bd8e4ea7d068d3ea2d0ccbbdea","last_reissued_at":"2026-05-18T00:03:45.684031Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:45.684031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.03459","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":"2026-05-18T00:03:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1K63CtG7HjgtOMtGp75X9RqMWKTlPJaWcdq5srstcujig+X5v8d8F9gmZ2P2oO9riV/+4eP4MFK/mnHbbLwEDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:47:44.195459Z"},"content_sha256":"a9300de958a27888d04c3d6c44d71bc5712c1f1fc9fccd653545699c15f8b84b","schema_version":"1.0","event_id":"sha256:a9300de958a27888d04c3d6c44d71bc5712c1f1fc9fccd653545699c15f8b84b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DNGX67PVANS5ZYTERCFF5G3MB5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interactions between Gas Dynamics and Magnetic Fields in the Massive Dense Cores of the DR21 Filament","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Hauyu B. Liu, Josep M. Girart, Keping Qiu, Qizhou Zhang, Shih-Ping Lai, Tao-Chung Ching","submitted_at":"2018-08-10T08:59:48Z","abstract_excerpt":"We report Submillimeter Array molecular line observations in the 345 GHz band of five massive dense cores, Cyg-N38, Cyg-N43, Cyg-N48, Cyg-N51, and Cyg-N53 in the DR21 filament. The molecular line data reveal several dynamical features of the cores: (1) prominent outflows in all cores seen in the CO and SiO lines, (2) significant velocity gradients in Cyg-N43 and Cyg-N48 seen in the H13CN and H13CO+ lines suggesting 0.1-pc-scale rotational motions, and (3) possible infalls in Cyg-N48 found in the SiO and SO lines. Comparing the molecular line data and our dust polarization data in Ching et al. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03459","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":"2026-05-18T00:03:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/IcCEBAi4xVXEW2envLuGmx+t329UGRbwv9kaU/CexnUa2rA6kjplB+vXJ6mQi0dL/5hl6tOJr24dM+SlzedDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:47:44.195811Z"},"content_sha256":"67e1c06fd59a33550201291c872d4be02735c996a667ab51d3e9e0b11faf9e32","schema_version":"1.0","event_id":"sha256:67e1c06fd59a33550201291c872d4be02735c996a667ab51d3e9e0b11faf9e32"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DNGX67PVANS5ZYTERCFF5G3MB5/bundle.json","state_url":"https://pith.science/pith/DNGX67PVANS5ZYTERCFF5G3MB5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DNGX67PVANS5ZYTERCFF5G3MB5/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":"2026-06-02T19:47:44Z","links":{"resolver":"https://pith.science/pith/DNGX67PVANS5ZYTERCFF5G3MB5","bundle":"https://pith.science/pith/DNGX67PVANS5ZYTERCFF5G3MB5/bundle.json","state":"https://pith.science/pith/DNGX67PVANS5ZYTERCFF5G3MB5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DNGX67PVANS5ZYTERCFF5G3MB5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DNGX67PVANS5ZYTERCFF5G3MB5","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":"076fad9a198f86b7531aa67df8222c9b4c1cf85072a446b14b824d9abac6d171","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-10T08:59:48Z","title_canon_sha256":"d0f62649ab3799475810e1760bd2db85a70971edc4e2dfd5c335942c9a367b47"},"schema_version":"1.0","source":{"id":"1808.03459","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03459","created_at":"2026-05-18T00:03:45Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03459v1","created_at":"2026-05-18T00:03:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03459","created_at":"2026-05-18T00:03:45Z"},{"alias_kind":"pith_short_12","alias_value":"DNGX67PVANS5","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DNGX67PVANS5ZYTE","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DNGX67PV","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:67e1c06fd59a33550201291c872d4be02735c996a667ab51d3e9e0b11faf9e32","target":"graph","created_at":"2026-05-18T00:03:45Z","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"},"paper":{"abstract_excerpt":"We report Submillimeter Array molecular line observations in the 345 GHz band of five massive dense cores, Cyg-N38, Cyg-N43, Cyg-N48, Cyg-N51, and Cyg-N53 in the DR21 filament. The molecular line data reveal several dynamical features of the cores: (1) prominent outflows in all cores seen in the CO and SiO lines, (2) significant velocity gradients in Cyg-N43 and Cyg-N48 seen in the H13CN and H13CO+ lines suggesting 0.1-pc-scale rotational motions, and (3) possible infalls in Cyg-N48 found in the SiO and SO lines. Comparing the molecular line data and our dust polarization data in Ching et al. ","authors_text":"Hauyu B. Liu, Josep M. Girart, Keping Qiu, Qizhou Zhang, Shih-Ping Lai, Tao-Chung Ching","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-10T08:59:48Z","title":"Interactions between Gas Dynamics and Magnetic Fields in the Massive Dense Cores of the DR21 Filament"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03459","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:a9300de958a27888d04c3d6c44d71bc5712c1f1fc9fccd653545699c15f8b84b","target":"record","created_at":"2026-05-18T00:03:45Z","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":"076fad9a198f86b7531aa67df8222c9b4c1cf85072a446b14b824d9abac6d171","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-10T08:59:48Z","title_canon_sha256":"d0f62649ab3799475810e1760bd2db85a70971edc4e2dfd5c335942c9a367b47"},"schema_version":"1.0","source":{"id":"1808.03459","kind":"arxiv","version":1}},"canonical_sha256":"1b4d7f7df50365dce264888a5e9b6c0f595c61bd8e4ea7d068d3ea2d0ccbbdea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b4d7f7df50365dce264888a5e9b6c0f595c61bd8e4ea7d068d3ea2d0ccbbdea","first_computed_at":"2026-05-18T00:03:45.684031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:45.684031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9VdhxPZ2MvdClVva6S+sP3eNBCf43FPB6j69QSmCumElHs2B1OqQMXRgDezXkK/uWt07dZopcBoR0DlDM+aiCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:45.684612Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.03459","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9300de958a27888d04c3d6c44d71bc5712c1f1fc9fccd653545699c15f8b84b","sha256:67e1c06fd59a33550201291c872d4be02735c996a667ab51d3e9e0b11faf9e32"],"state_sha256":"c634ef78b684b95dd41f1c6d6fbc53fed6094c531b369c6d77d4a64d584352cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DIUPNugJXXUtujC84maEJD20m3TtNUyYLkt21k0r173gHC0z3PukpVRFcKNi3vsqD2VwhumxyrhVlFTjXaQRCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T19:47:44.197774Z","bundle_sha256":"c8621ced3d8109f9dbd29bc3df171b0dfc3dbbf4bc2e83d4b0cb5a0809e57057"}}