{"paper":{"title":"1H0419-577: a two-state Seyfert Galaxy?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Osservatorio Astronomico di Bologna, (3) Dep. of Astron. & Astophys., (4) SSD/ESTEC. Noordwijk, (5) Mullard Space Science Laboratory, A.Comastri, A.Parmar (4), Dorking, E.M.Puchnarewicz (5) ((1) Beppo-SAX SDC, G.Stirpe (2), Italy, M.Guainazzi (1), Penn State Un., Roma, The Netherlands, U.K.), Un. College London, U.S.A., W.N.Brandt (3)","submitted_at":"1997-12-18T13:31:44Z","abstract_excerpt":"The preliminary results of the BeppoSAX observation of the radio-quiet AGN 1H0419-577 are presented. Despite its broad line optical spectrum, the intermediate X-ray spectrum (i.e. 2--10 keV) is flatter than typically observed in Seyfert 1s and no iron line is significantly detected. Even more intriguingly, a 1992 ROSAT pointed observation suggests a dramatic (~ 1) change in the spectral shape for E < 2 keV. Such behavior is briefly discussed in the framework of our current understanding of Comptonization scenarios in the nuclear regions of radio-quiet AGN."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9712248","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"}