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astro-ph2003
High redshift quasars and the supermassive black hole mass budget: constraints on quasar formation models
J. M. Bromley, R. S. Somerville, A. C. Fabian
We investigate the constraints on models of supermassive black hole (SMBH) and quasar formation obtainable from two recent observational developments: the discovery of luminous qua…
astro-ph2003
An X-ray absorption analysis of the high-velocity system in NGC 1275
K. Gillmon, J. S. Sanders, A. C. Fabian
We present an X-ray absorption analysis of the high-velocity system (HVS) in NGC 1275 using results from a deep 200 ks Chandra observation. We are able to describe the morphology o…
astro-ph2003
Extended X-ray emission in the high redshift quasar GB 1508+5714 at z=4.3
W. Yuan, A. C. Fabian, A. Celotti +1
We report the discovery of extended X-ray emission around the powerful high-redshift quasar GB 1508+5714 at z=4.3, revealed in a long Chandra ACIS observation. The emission feature…