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X-ray continuum variability of MCG-6-30-15
S. Vaughan, A. C. Fabian, K. Nandra
This paper presents a comprehensive examination of the X-ray continuum variability of the bright Seyfert 1 galaxy MCG-6-30-15. The source clearly shows the strong, linear correlati…
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…
X-ray background synthesis: the infrared connection
P. Gandhi, A. C. Fabian
We present a synthesis model of the X-ray background based on the cross-correlation between mid-infrared and X-ray surveys, where the distribution of type 2 sources is assumed to f…
A Chandra observation of the H2O megamaser IC2560
K. Iwasawa, P. R. Maloney, A. C. Fabian
A short Chandra ACIS-S observation of the Seyfert 2 galaxy IC 2560, which hosts a luminous nuclear water megamaser, shows: 1) the X-ray emission is extended; 2) the X-ray spectrum…