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On the detectability of distant Compton-thick obscured quasars
A. C. Fabian, R. J. Wilman, C. S. Crawford
Chandra and XMM-Newton have resolved the 2-8 keV X-ray Background (XRB) into point sources. Many of the fainter sources are obscured active galactic nuclei (AGN) with column densit…
Multi-wavelength observations of serendipitous Chandra sources
P. Gandhi, C. S. Crawford, A. C. Fabian +4
We describe progress in a programme to study a sample of sources typical of those which contribute a large fraction of the hard X-ray background. The sources are selected from the…
Multi-wavelength observations of serendipitous Chandra X-ray sources in the field of A2390
C. S. Crawford, P. Gandhi, A. C. Fabian +4
We present optical spectra and near-infrared imaging of a sample of serendipitous X-ray sources detected in the field of Chandra observations of the A2390 cluster of galaxies. The…
Detecting high redshift evolved galaxies as the hosts of optically faint hard X-ray sources
L. L. Cowie, A. J. Barger, M. W. Bautz +8
We combine deep Subaru near-infrared images of the massive lensing clusters A2390 and A370 with Keck optical data to map the spectral energy distributions (SEDs) of Chandra X-ray s…
Chandra detection of the intracluster medium around 3C294 at z=1.786
A. C. Fabian, C. S. Crawford, S. Ettori +1
We present a Chandra observation of the powerful radio galaxy 3C294 showing clear evidence for a surrounding intracluster medium. At a redshift of 1.786 this is the most distant cl…