127 citations · 1.2k across the 39 of their papers we have counts for
8 papers · 1 filter
A deep Chandra observation of the hot gaseous halo around a rare, extremely massive and relativistic jet launching spiral galaxy
S. A. Walker, J. Bagchi, A. C. Fabian
We present a deep Chandra observation of the extremely massive spiral galaxy 2MASX J23453268-0449256, the first X-ray observation of this very rare system which features the larges…
Exploring the origin of a large cavity in Abell 1795 using deep Chandra observations
S. A. Walker, A. C. Fabian, P. Kosec
We examine deep stacked Chandra observations of the galaxy cluster Abell 1795 (over 700ks) to study in depth a large (34 kpc radius) cavity in the X-ray emission. Curiously, despit…
The X-ray spectrum of the cooling-flow quasar H1821+643 : A massive black hole feeding off the intracluster medium
Christopher S. Reynolds, Anne M. Lohfink, Arif Babul +4
We present a deep Suzaku observation of H1821+643, an extremely rare example of a powerful quasar hosted by the central massive galaxy of a rich cooling-core cluster of galaxies. I…
The effect of the quasar H1821+643 on the surrounding intracluster medium: revealing the underlying cooling flow
S. A. Walker, A. C. Fabian, H. R. Russell +1
We present a detailed study of the thermodynamic properties of the intracluster medium of the only low redshift galaxy cluster to contain a highly luminous quasar, H1821+643. The c…
Do high redshift quasars have powerful jets?
A. C. Fabian, S. A. Walker, A. Celotti +4
Double-lobed radio galaxies a few 100s of kpc in extent, like Cygnus A, are common at redshifts of 1 to 2, arising from some 10 per cent of the most powerful Active Galactic Nuclei…
Large scale gas sloshing out to half the virial radius in the strongest cool core REXCESS galaxy cluster, RXJ2014.8-2430
S. A. Walker, A. C. Fabian, J. S. Sanders
We search the cool core galaxy clusters in the REXCESS sample for evidence of large scale gas sloshing, and find clear evidence for sloshing in RXJ2014.8-2430, the strongest cool c…