A. C. Fabian

TL;DR: In this paper, the authors highlight the importance of Compton down-scattering in determining the individual source spectra and the fit to the X-ray background spectrum, and demonstrate how parameter space opens up considerably if a super-solar iron abundance is assumed for the absorbing material.

TL;DR: In this article, the authors present a position sensitive proportional counter (PSPC) observation of the radio galaxy Cygnus-A and show that the X-ray emission in the radio band is dominated by thermal emission from the hot intracluster medium of the associated cluster.

TL;DR: In this article, pointed ROSAT PSPC observations of five of the most luminous, intermediate redshift (0 1 0 15) clusters of galaxies detected in the ROSAT All-Sky Survey are combined with optical CCD images and spectra to examine the relationship between clusters and their central cluster galaxies (CCGs).

TL;DR: In this article, principal component analysis (PCA) was used to identify at least 12 qualitatively different patterns of spectral variability, involving several different mechanisms, including five sources which show evidence of variable relativistic reflection (MCG-6-30-15, NGC 4051, 1H 0707−495, nGC 3516 and Mrk 766).