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- W2154759085 abstract "We present results from a BeppoSAX observation of the broad absorption line (BAL) QSO CSO 755, which was observed as part of our program to investigate the X-ray properties of highly polarized BAL QSOs. CSO 755 is clearly detected by the BeppoSAX Medium-Energy Concentrator Spectrometers, making it the highest redshift (z=2.88) and most optically luminous (MV=-27.4) BAL QSO seen in X-rays. It is detected in several energy bands including the rest-frame 21-39 keV band, but we are able to place only loose constraints upon its X-ray spectral shape. Our X-ray detection is consistent with the hypothesis that the BAL QSOs with high optical continuum polarization tend to be the X-ray brighter members of the class. We examine a scattering interpretation of a polarization/X-ray flux connection, and we discuss the data needed to prove or refute such a connection. We also discuss a probable ROSAT detection of CSO 755. The observed-frame 2-10 keV flux from BeppoSAX (1.3x10-13 ergs cm-2 s-1) is high enough to allow X-Ray Multimirror Mission spectroscopy, and studies of iron K-line emission should prove of particular interest if a large amount of scattered X-ray flux is present." @default.
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- W2154759085 date "1999-11-10" @default.
- W2154759085 modified "2023-09-23" @default.
- W2154759085 title "X-Rays from the Highly Polarized Broad Absorption Line QSO CSO 755" @default.
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- W2154759085 doi "https://doi.org/10.1086/312346" @default.
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