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The ROSAT Brightest Cluster Sample (BCS) - I. The compilation of the sample and the cluster log N-log S distribution
H. Ebeling, A. C. Edge, H. Böhringer +5
We present a 90 per cent flux-complete sample of the 201 X-ray brightest clusters of galaxies in the northern hemisphere (dec > 0 deg), at high Galactic latitudes (|b| > 20 deg), w…
A Simultaneous ASCA and RXTE Long Look at the Seyfert 1 Galaxy MCG--6-30-15
J. C. Lee, A. C. Fabian, K. Iwasawa +2
We report on a joint RXTE and ASCA observation spanning 400~ks of the Seyfert 1 galaxy MCG--6-30-15. The low energy coverage of ASCA coupled with the high energy coverage of…
One more surprise from the Circinus Galaxy: BeppoSAX discovery of a transmission component in hard X-rays
G. Matt, M. Guainazzi, R. Maiolino +11
The Circinus Galaxy has been observed, for the first time above 10 keV, by BeppoSAX. An excess emission above the extrapolation of the best fit 0.1--10 keV spectrum is apparent in…
Iron line profiles including emission from within the innermost stable orbit of a black hole accretion disc
A. J. Young, R. R. Ross, A. C. Fabian
Reynolds & Begelman (1997) have recently proposed a model in which the broad and extremely redshifted iron line seen during a deep minimum of the light curve of the Seyfert 1 galax…
X-ray iron line reverberation from black hole accretion disks
C. S. Reynolds, A. J. Young, M. C. Begelman +1
The relativistically broad X-ray iron line seen in many AGN spectra is thought to originate from the central regions of the putative black hole accretion disk. Both the line profil…
X-ray spectroscopy of the broad line radio galaxy 3C111
C. S. Reynolds, K. Iwasawa, C. S. Crawford +1
We present an ASCA observation of the broad line radio galaxy 3C111. The X-ray spectrum is well described by a model consisting of a photoelectrically-absorbed power-law form. The…
X-Ray Emission Line Ratios and Multiphase Gas in Elliptical Galaxies and Galaxy Clusters
David A. Buote, Claude R. Canizares, A. C. Fabian
We examine the K shell emission lines produced by isothermal and simple multiphase models of the hot gas in elliptical galaxies and galaxy clusters to determine the most effective…
The changing X-ray period of the Seyfert galaxy IRAS18325-5926
A. C. Fabian, J. C. Lee, W. N. Brandt +3
We report on two observations of the Seyfert galaxy IRAS18325-5926 made in 1997 December and 1998 February with the Rossi X-ray Timing Explorer (RXTE). We find evidence for periodi…
The impact of cooling flows on the Tx-Lbol relation for the most luminous clusters
S. W. Allen, A. C. Fabian
We examine the effects of cooling flows on the T_X-L_Bol relation for a sample of the most X-ray luminous (L_Bol > 10^45 erg/s) clusters of galaxies known. Using high-quality ASCA…
Detection of an X-ray periodicity in the Seyfert galaxy IRAS18325-5926
K. Iwasawa, A. C. Fabian, W. N. Brandt +4
We report the detection of a 58 ks (16 hr) periodicity in the 0.5-10 keV X-ray light curve of the Seyfert galaxy IRAS18325-5926 (Fairall49), obtained from a 5-day ASCA observation.…