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astro-ph.CO2013★ 27 cited
X-ray emission from the Ultramassive Black Hole candidate NGC1277: implications and speculation on its origin
A. C. Fabian, J. S. Sanders, M. Haehnelt +2
We study the X-ray emission from NGC1277, a galaxy in the core of the Perseus cluster, for which van den Bosch et al. have recently claimed the presence of an UltraMassive Black Ho…
astro-ph.CO2009★ 58 cited
Sub-parsec supermassive Binary Quasars: expectations at z<1
M. Volonteri, J. M. Miller, M. Dotti
We investigate the theoretical expectations for detections of supermassive binary black holes that can be identified as sub-parsec luminous quasars. To-date, only two candidates ha…