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Optical and near-infrared observations of hard serendipitous Chandra sources
C. S. Crawford, P. Gandhi, A. C. Fabian
We have been carrying out a successful observational programme targeted at finding the highly obscured quasars that are thought to be the main contributors to the hard X-ray backgr…
Extended X-ray emission around four 3C quasars at 0.55<z<0.75 observed with Chandra
C. S. Crawford, A. C. Fabian
We report on the detection of a soft spatially-extended component of X-ray emission around four intermediate-redshift 3C quasars observed with Chandra: 3C254, 3C263, 3C275.1 and 3C…
XMM-Newton observations of two hyperluminous IRAS galaxies: Compton-thick quasars with obscuring starbursts
R. J. Wilman, A. C. Fabian, C. S. Crawford +1
We present XMM-Newton observations of two hyperluminous IRAS galaxies (L_Bol>1E13 L_sun), neither of which was previously detected by ROSAT. Published models of the infrared SEDs i…
VLT near-infrared spectra of hard serendipitous Chandra sources
P. Gandhi, C. S. Crawford, A. C. Fabian
We present near-infrared long-slit spectra of eight optically-dim X-ray sources obtained with ISAAC on the Very Large Telescope. Six of the sources have hard X-ray emission with a…
Exciting molecular hydrogen in the central galaxies of cooling flows
R. J. Wilman, A. C. Edge, R. M. Johnstone +3
The origin of rovibrational H_2 emission in the central galaxies of cooling flow clusters is poorly understood. Here we address this issue using data from our near-infrared spectro…
A survey of molecular hydrogen in the central galaxies of cooling flows
A. C. Edge, R. J. Wilman, R. M. Johnstone +3
We present a large sample of H- and K-band spectra of 32 optically line luminous central cluster galaxies. We find significant rovibrational H_2 emission in 23 of these galaxies as…