G. C. Stewart

TL;DR: The 2XMM catalogue as mentioned in this paper is the largest ever made at X-ray wavelengths, containing 246 897 detections drawn from 3491 public XMM-Newton observations over a 7-year interval, which relate to 191 870 unique sources.

TL;DR: The Advanced Telescope for High Energy Astrophysics (Athena+) mission as discussed by the authors provides the necessary performance (e.g., angular resolution, spectral resolution, survey grasp) to address these questions and revolutionize our understanding of the Hot and Energetic Universe.

TL;DR: The initial results from XMM-Newton observations of the rich cluster of galaxies Abell 1795 are presented in this paper, where spatially-resolved X-ray spectra taken by the European Photon Imaging Cameras (EPIC) show a temperature drop at a radius of - 200 kpc from the cluster center, indicating that the ICM is cooling.

TL;DR: In this article, a composite spectrum from twelve Ginga observations of Seyfert-type active galactic nuclei has been used to model the hard X-ray power-law continuum in a slab (or perhaps a disk) of cold matter.

TL;DR: In this paper, X-ray observations of 45 clusters of galaxies made with the European Xray Observatory Satellite, EXOSAT, are presented, and the 1−20 keV spectra obtained constitute the largest homogeneous spectral sample presently available.