The Frequency of Intrinsic X-Ray Weakness among Broad Absorption Line Quasars

• Published in: The Astrophysical journal Vol. 859; no. 2; pp. 113 - 123
• Main Authors: Liu, Hezhen, Luo, B., Brandt, W. N., Gallagher, S. C., Garmire, G. P.
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.06.2018; IOP Publishing
• Subjects: Absorption; Active galactic nuclei; Astrophysics; galaxies: active; Ionization; Polls & surveys; Power law; Quasars; quasars: absorption lines; Target detection; Ultraviolet spectra; X-rays: general

We present combined 14-37 ks Chandra observations of seven z = 1.6-2.7 broad absorption line (BAL) quasars selected from the Large Bright Quasar Survey (LBQS). These seven objects are high-ionization BAL (HiBAL) quasars, and they were undetected in the Chandra hard band (2-8 keV) in previous observa...