{"paper":{"title":"The cosmic X-ray background and the population of the most heavily obscured AGNs","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) Uni Ferrara, (3) INAF/OA Bologna, (4) INAF/OA Roma, (5) Uni Bologna, 6), (6) INAF/IRA, (7) INAF/IASF Roma), Andrea Comastri (3), Eliana Palazzi (1) ((1) INAF/IASF Bologna, Enrico Costa (7), Fabrizio Fiore (4), Filippo Frontera (1, Giancarlo Setti (5, Lorenzo Amati (1), Mauro Orlandini (1), Nicola Masetti (1), Raffaella Landi (1)","submitted_at":"2006-11-07T16:54:17Z","abstract_excerpt":"We report on an accurate measurement of the CXB in the 15-50 keV range performed with the Phoswich Detection System (PDS) instrument aboard the BeppoSAX satellite. We establish that the most likely CXB intensity level at its emission peak (26-28 keV) is ~40 keV/cm2/s/sr, a value consistent with that derived from the best available CXB measurement obtained over 25 years ago with the first High Energy Astronomical Observatory satellite mission (HEAO-1; Gruber et al. 1999), whose intensity, lying well below the extrapolation of some lower energy measurements performed with focusing telescopes, wa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0611228","kind":"arxiv","version":2},"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"}