{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:MTWOVYE7C4MF32UKD6GGSWASIT","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":"b65f5baa5815c556d80ba4a13f1354058fbd3daa42bf2ee5ea38f289896d45d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-09T18:00:00Z","title_canon_sha256":"d644b7e980f85462977ce1cdd771632112d786483a9ed9d5d91d8f81536c8239"},"schema_version":"1.0","source":{"id":"2003.04318","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.04318","created_at":"2026-07-05T01:12:40Z"},{"alias_kind":"arxiv_version","alias_value":"2003.04318v2","created_at":"2026-07-05T01:12:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.04318","created_at":"2026-07-05T01:12:40Z"},{"alias_kind":"pith_short_12","alias_value":"MTWOVYE7C4MF","created_at":"2026-07-05T01:12:40Z"},{"alias_kind":"pith_short_16","alias_value":"MTWOVYE7C4MF32UK","created_at":"2026-07-05T01:12:40Z"},{"alias_kind":"pith_short_8","alias_value":"MTWOVYE7","created_at":"2026-07-05T01:12:40Z"}],"graph_snapshots":[{"event_id":"sha256:4051d8cc655d0a5a661caffe9dc348501fa934d6693627b269a9c73af92bc5b1","target":"graph","created_at":"2026-07-05T01:12:40Z","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/2003.04318/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a novel method for determining the total matter surface density of the Galactic disk by analysing the kinematics of a dynamically cold stellar stream that passes through or close to the Galactic plane. The method relies on the fact that the vertical component of energy for such stream stars is approximately constant, such that their vertical positions and vertical velocities are interrelated via the matter density of the Galactic disk. By testing our method on mock data stellar streams, with realistic phase-space dispersions and Gaia uncertainties, we demonstrate that it is applicab","authors_text":"Axel Widmark, Khyati Malhan, Pablo F. de Salas, Sofia Sivertsson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-09T18:00:00Z","title":"Measuring the Matter Density of the Galactic Disk Using Stellar Streams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.04318","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:c0df0e70534b47448c9bb12c9a90af92f26870d36899e946293496adb1c0d3b4","target":"record","created_at":"2026-07-05T01:12:40Z","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":"b65f5baa5815c556d80ba4a13f1354058fbd3daa42bf2ee5ea38f289896d45d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-09T18:00:00Z","title_canon_sha256":"d644b7e980f85462977ce1cdd771632112d786483a9ed9d5d91d8f81536c8239"},"schema_version":"1.0","source":{"id":"2003.04318","kind":"arxiv","version":2}},"canonical_sha256":"64eceae09f17185dea8a1f8c69581244edb9515db50f347830cd9d4f6b2ec719","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64eceae09f17185dea8a1f8c69581244edb9515db50f347830cd9d4f6b2ec719","first_computed_at":"2026-07-05T01:12:40.526973Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:12:40.526973Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JvOnSZNgGot6neqGy5cZr/F+ccoVx66PwRBFSJvZW0iU0yWGZxdXhVwJUOZIoy576tFzTyvKQUhQwJFsb35GCA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:12:40.527418Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.04318","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0df0e70534b47448c9bb12c9a90af92f26870d36899e946293496adb1c0d3b4","sha256:4051d8cc655d0a5a661caffe9dc348501fa934d6693627b269a9c73af92bc5b1"],"state_sha256":"eb291c3d23279442b28d16ff29f35e7f3c7f5ae73649a54636ac6ae37e95a910"}