{"paper":{"title":"Variability and the X-ray/UV ratio of active galactic nuclei. II. Analysis of a low-redshift Swift sample","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"D. Trevese, F. Vagnetti, M. Antonucci","submitted_at":"2012-12-14T10:30:32Z","abstract_excerpt":"Variability, both in X-ray and optical/UV, affects the well-known anti-correlation between the $\\alpha_{ox}$ spectral index and the UV luminosity of active galactic nuclei, contributing part of the dispersion around the average correlation (\"intra-source dispersion\"), in addition to the differences among the time-average $\\alpha_{ox}$ values from source to source (\"inter-source dispersion\"). We want to evaluate the intrinsic $\\alpha_{ox}$ variations in individual objects, and their effect on the dispersion of the $\\alpha_{ox}-L_{UV}$ anti-correlation. We use simultaneous UV/X-ray data from Swi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.3432","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"}