4 papers
Quasar Outflow Deceleration or Acceleration: Predictions and a Search
Patrick B. Hall, E. Weiss, W. N. Brandt +1
Quasar winds can shock and sweep up ambient interstellar medium (ISM) gas, contributing to galactic quenching. We combine and extend past models of energy-conserving shock bubbles…
Quasar winds caught on acceleration and deceleration
Weimin Yi, P. B. Hall, Zunlin Yuan +5
We present an observational study of wind acceleration based on four low-ionization broad absorption line (LoBAL) quasars (J0136, J1238, J1259, J1344). J0136 and J1344 (group-1) ar…
A cooling flow around the low-redshift quasar H1821+643
H. R. Russell, P. E. J. Nulsen, A. C. Fabian +7
H1821+643 is the nearest quasar hosted by a galaxy cluster. The energy output by the quasar, in the form of intense radiation and radio jets, is captured by the surrounding hot atm…
The aox--HeII EW Connection in Radio-Loud Quasars
John D. Timlin, Shifu Zhu, W. Niel Brandt +1
Radio-loud quasars (RLQs) are known to produce excess X-ray emission, compared to radio-quiet quasars (RQQs) of the same luminosity, commonly attributed to jet-related emission. Re…