2008ApJ...674L..69G

It has been known for more than a decade that BALQSOs (broad absorption line quasars) are highly attenuated in the X-ray regime compared to other quasars, especially in the soft band (<1 keV). Using X-ray selection techniques, we have found ``soft X-ray-loud'' BALQSOs that, by definition, have soft X-ray (0.3 keV) to UV (3000 Å) flux density ratios that are higher than typical non-BAL radio-quiet quasars. Our sample of three sources includes one LoBALQSO (low-ionization BALQSO), which is generally considered to be the most highly attenuated in X-rays. The three QSOs are the only known BALQSOs that have X-ray observations that are consistent with no intrinsic soft X-ray absorption. The existence of a large X-ray luminosity and the hard ionizing continuum that it presents to potential UV absorption gas is in conflict with the ionization states that are conducive to line-driving forces within BAL winds (especially for the LoBALs).