{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ULSD6RQCYW2FNJQ55MYVMVFWJI","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":"68ccc69250ec1f5b974a85e4b1d74579098aa9eddac6b96e75d562d2af164a2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-04-19T17:09:29Z","title_canon_sha256":"b338a8936c72c65f9d095232b4d2a3cc5006577b5cb231bc4a7e4abaf35c3c4b"},"schema_version":"1.0","source":{"id":"1304.5481","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5481","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5481v1","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5481","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"ULSD6RQCYW2F","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"ULSD6RQCYW2FNJQ5","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"ULSD6RQC","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:02701328e9adfd25308b607e3976a0cdf0e696f1d9ec0d2a2d7c8bd773aa1602","target":"graph","created_at":"2026-05-18T01:50:24Z","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":"The parameters of the Galactic spiral wave are re-determined using a modified periodogram (spectral) analysis of the galactocentric radial velocities of 58 masers with known trigonometric parallaxes, proper motions, and line-of-site velocities. The masers span a wide range of galactocentric distances, $3<$R$<14$ kpc, which, combined with a large scatter of position angles $\\theta$ of these objects in the Galactic plane XY, required an accurate account of logarithmic dependence of spiral-wave perturbations on both galactocentric distance and position angle. A periodic signal was detected corres","authors_text":"A.T. Bajkova, V.V. Bobylev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-04-19T17:09:29Z","title":"Re-determining the Galactic spiral density wave parameters from data on masers with trigonometric parallaxes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5481","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:b3717abe14dbf14e9f4652832466e2f9bbd79bb6da673d36d1d7dd3f337a756c","target":"record","created_at":"2026-05-18T01:50:24Z","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":"68ccc69250ec1f5b974a85e4b1d74579098aa9eddac6b96e75d562d2af164a2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-04-19T17:09:29Z","title_canon_sha256":"b338a8936c72c65f9d095232b4d2a3cc5006577b5cb231bc4a7e4abaf35c3c4b"},"schema_version":"1.0","source":{"id":"1304.5481","kind":"arxiv","version":1}},"canonical_sha256":"a2e43f4602c5b456a61deb315654b64a3b2ee71f71020d225925f001049d8419","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2e43f4602c5b456a61deb315654b64a3b2ee71f71020d225925f001049d8419","first_computed_at":"2026-05-18T01:50:24.380451Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:24.380451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mWY9UikcWvVY53Bm+Kc06Jk83IndzrrNKi5frOtX8jeGZJx3ll/0hueYa39tjkakD+jzVrVo40xUTjXeBHERBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:24.381224Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.5481","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3717abe14dbf14e9f4652832466e2f9bbd79bb6da673d36d1d7dd3f337a756c","sha256:02701328e9adfd25308b607e3976a0cdf0e696f1d9ec0d2a2d7c8bd773aa1602"],"state_sha256":"825d7d502b11fb79459d173b39d593b1b8672163eb152b8c2da69f65c2f9bd6b"}