Amin Talebi BezminAbadi, Ashraf Mohabati Mobarez, Abolghasem Ajami, Alireza Rafiee, Tarang Taghwaii
(Received 17 March, 2009; Accepted 8 July, 2009)AbstractBackground and purpose: Helicobacter pylori, which infect approximately one half of the world’s population, are an important risk factor in...
Rapidly Spinning Black Holes in Quasars: An Open Question (2008)
Rafiee, Alireza, Hall, Patrick B.
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 thus that quasars do...
Acceleration and Substructure Constraints in a Quasar Outflow (2007)
Hall, Patrick B., Sadavoy, Sarah I., Hutsemekers, Damien, Everett, John E., Rafiee, Alireza
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 of two other...