2.3k citations · 41.1k across the 542 of their papers we have counts for
13 papers · 2 filters
The effect of radiation pressure on dusty absorbing gas around AGN
A. C. Fabian, R. V. Vasudevan, P. Gandhi
Many Active Galactic Nuclei (AGN) are surrounded by gas which absorbs the radiation produced by accretion onto the central black hole and obscures the nucleus from direct view. The…
Broad iron K-alpha emission lines as a diagnostic of black hole spin
Christopher S. Reynolds, Andrew C. Fabian
We address the ability of broad iron emission lines from black hole accretion disks to diagnose the spin of the black hole. Using a high-resolution 3-dimensional MHD simulation of…
XMM-Newton and Broad Iron Lines
A. C. Fabian
Iron line emission is common in the X-ray spectra of accreting black holes. When the line emission is broad or variable then it is likely to originate from close to the black hole.…
Cool X-ray emitting gas in the core of the Centaurus cluster of galaxies
J. S. Sanders, A. C. Fabian, S. W. Allen +3
We use a deep XMM-Newton Reflection Grating Spectrometer observation to examine the X-ray emission from the core of the Centaurus cluster of galaxies. We clearly detect Fe-XVII emi…
Implications of very rapid TeV variability in blazars
Mitchell C. Begelman, Andrew C. Fabian, Martin J. Rees
We discuss the implications of rapid (few-minute) variability in the TeV flux of blazars, which has been observed recently with the HESS and MAGIC telescopes. The variability times…
Radio Source Heating in the ICM: The Example of Cygnus A
Elena Belsole, Andrew C. Fabian
One of the most promising solutions for the cooling flow problem involves energy injection from the central AGN. However it is still not clear how collimated jets can heat the ICM…
X-ray active galactic nuclei in the core of the Perseus cluster
S. Santra, J. S. Sanders, A. C. Fabian
We present a study of the X-ray emission from the nuclei of galaxies observed in the core of the Perseus cluster in a deep exposure with Chandra. Point sources are found coincident…
Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
R. V. Vasudevan, A. C. Fabian
(Abridged) The X-ray background can be used to constrain the accretion history of Supermassive Black Holes (SMBHs) in Active Galactic Nuclei (AGN). A knowledge of the hard X-ray bo…
Fields and Filaments in the Core of the Centaurus Cluster
G. B. Taylor, A. C. Fabian, G. Gentile +3
We present high resolution images of the Faraday Rotation Measure (RM) structure of the radio galaxy PKS 1246-410, at the center of the Centaurus cluster. Comparison with Halpha-li…
The high energy emission of GRO J1655-40 as revealed with INTEGRAL spectroscopy of the 2005 outburst
M. D. Caballero-Garcia, J. M. Miller, E. Kuulkers +10
We present broadband (3-500 keV) INTEGRAL X-ray spectra and X-ray/optical light curves of the luminous black hole X-ray transient and relativistic jet source GRO J1655-40. Our anal…
A deeper X-ray study of the core of the Perseus galaxy cluster: the power of sound waves and the distribution of metals and cosmic rays
J. S. Sanders, A. C. Fabian
We make a further study of the very deep Chandra observation of the X-ray brightest galaxy cluster, A426 in Perseus. We examine the radial distribution of energy flux inferred by t…
The luminous X-ray hotspot in 4C 74.26: synchrotron or inverse-Compton emission?
M. C. Erlund, A. C. Fabian, Katherine M. Blundell +2
We report the discovery of an X-ray counterpart to the southern radio hotspot of the largest-known radio quasar 4C 74.26 (whose redshift is z=0.104). Both XMM-Newton and Chandra im…
A longer XMM-Newton look at I Zwicky 1: physical conditions and variability of the ionised absorbers
E. Costantini, L. C. Gallo, W. N. Brandt +2
We present a spectral analysis of the narrow-line Seyfert 1 galaxy I Zwicky 1, focusing on the characteristics of the ionised absorbers as observed with XMM-Newton in 2005. The sof…