50 citations · 55 across the 3 of their papers we have counts for
4 papers
Vanishing Absorption and Blueshifted Emission in FeLoBAL Quasars
Alireza Rafiee, Patrik Pirkola, Patrick B. Hall +3
We study the dramatic decrease in iron absorption strength in the iron low-ionization broad absorption line quasar SDSS J084133.15+200525.8. We report on the continued weakening of…
Wide Field Multiband Imaging of Low Redshift Quasar Environments
Jennifer E. Scott, Alireza Rafiee, Jill Bechtold +3
We present photometry of the large scale environments of a sample of twelve broad line AGN with from deep images in the SDSS , , , and filters taken…
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…
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…