50 citations · 55 across the 3 of their papers we have counts for
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astro-ph2008★ 4 cited
Rapidly Spinning Black Holes in Quasars: An Open Question
Alireza Rafiee, Patrick B. Hall
Wang et al. (2006) estimated an average radiative efficiency of 30% -- 35% for quasars at moderate redshift. We find that their method is not independent of quasar lifetimes and th…
astro-ph2007★ 50 cited
Acceleration and Substructure Constraints in a Quasar Outflow
Patrick B. Hall, Sarah I. Sadavoy, Damien Hutsemekers +2
We present observations of probable line-of-sight acceleration of a broad absorption trough of C IV in the quasar SDSS J024221.87+004912.6. We also discuss how the velocity overlap…