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X-ray Absorption in Radio-Quiet QSOs
W. N. Brandt, S. C. Gallagher, A. Laor +1
Major flows of ionized gas are thought to be present in the nuclei of most luminous QSOs, and absorption by these flows often has a significant effect upon the observed X-ray conti…
X-ray Observations of Optically-Selected, Radio-Quiet Quasars I: The ASCA results
I. M. George, T. J. Turner, T. Yaqoob +5
We present the result of 27 ASCA observations of 26 radio-quiet quasars (RQQs) from the PG survey. All the RQQs were detected except 2 BALQSOs. We find the variability characterist…
X-rays from the Highly Polarized Broad Absorption Line QSO CSO 755
W. N. Brandt, A. Comastri, S. C. Gallagher +3
We present results from a BeppoSAX observation of the BAL QSO CSO 755, observed as part of our program to investigate the X-ray properties of highly polarized BAL QSOs. CSO 755 is…
On the Nature of Soft X-ray Weak Quasi-Stellar Objects
W. N. Brandt, A. Laor, Beverley J. Wills
Recent studies of QSOs with ROSAT suggest the existence of a significant population of Soft X-ray Weak QSOs (SXW QSOs) where the soft X-ray flux is ~ 10-30 times smaller than in ty…
The Spectral Signature of Dust Scattering and Polarization in the Near IR to Far UV. I. Optical Depth and Geometry Effects
Victor G. Zubko, Ari Laor
Spectropolarimetry from the near IR to the far UV of light scattered by dust provides a valuable diagnostic of the dust composition, grain size distribution and spatial distributio…