{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:FEYB5SNX3L6746NBZHASL6W7OJ","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":"ac7c9c2f81e7fa5654084f4f743dfc8957d17e08ecd65f20247427cb47c85e5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-11T19:56:00Z","title_canon_sha256":"2fc6b237158c83eeff27e95b35fd79765590ce099ee97b8477362fcbcd6bf92b"},"schema_version":"1.0","source":{"id":"1101.2191","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.2191","created_at":"2026-05-18T02:03:42Z"},{"alias_kind":"arxiv_version","alias_value":"1101.2191v2","created_at":"2026-05-18T02:03:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.2191","created_at":"2026-05-18T02:03:42Z"},{"alias_kind":"pith_short_12","alias_value":"FEYB5SNX3L67","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"FEYB5SNX3L6746NB","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"FEYB5SNX","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:b39e1f06fd81ce508cb53e5ee1d48fa3d33cfb25ecb0545daef072a822405a75","target":"graph","created_at":"2026-05-18T02:03:42Z","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":"Using archival observations recorded over a 5+ year timeframe with the NASA Galaxy Evolution Explorer (GALEX) satellite, we present a study of the ultraviolet (UV) variability of 4360 quasars of redshifts up to z=2.5 that have optical counterparts in the Sloan Digital Sky Survey DR5 spectroscopic catalog. The observed changes in both the far UV (FUV: 1350-1785A) and near UV (NUV: 1770-2830A) AB magnitudes as a function of time may help differentiate between models of the emission mechanisms thought to operate in these active galaxies. A list of NUV and FUV variable quasars was derived from the","authors_text":"Barry Y. Welsh, James D. Neill, Jonathan M. Wheatley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-11T19:56:00Z","title":"GALEX observations of quasar variability in the ultraviolet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.2191","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:ea9a51a7503c11b2e67ad6125d2f9a7df3ba89acfe5facffd296dd7714ba5742","target":"record","created_at":"2026-05-18T02:03:42Z","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":"ac7c9c2f81e7fa5654084f4f743dfc8957d17e08ecd65f20247427cb47c85e5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-11T19:56:00Z","title_canon_sha256":"2fc6b237158c83eeff27e95b35fd79765590ce099ee97b8477362fcbcd6bf92b"},"schema_version":"1.0","source":{"id":"1101.2191","kind":"arxiv","version":2}},"canonical_sha256":"29301ec9b7dafdfe79a1c9c125fadf7246c7bdb07b5ed93ec5be5ebbb27c3cc4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29301ec9b7dafdfe79a1c9c125fadf7246c7bdb07b5ed93ec5be5ebbb27c3cc4","first_computed_at":"2026-05-18T02:03:42.903005Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:42.903005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4zMTOTwkodvS+9zlzfxjfn43ffa3cG0LUUqt+aVX1gpM65LPXku+WrprbR1wgBxwDF2E42ecZig/IHrWQnxtCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:42.903496Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.2191","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea9a51a7503c11b2e67ad6125d2f9a7df3ba89acfe5facffd296dd7714ba5742","sha256:b39e1f06fd81ce508cb53e5ee1d48fa3d33cfb25ecb0545daef072a822405a75"],"state_sha256":"950752f71e76d4e4c4175a09cd707fec00de99ca61f21ce45aafdfc9c74a89ae"}