Norbert Schartel

TL;DR: The XMM-Newton Observatory is a cornerstone mission of the European Space Agency's Horizon 2000 programme, and is the largest scientific satellite it has launched to date as mentioned in this paper, which has been enabled by the unprecedentedly large effective area of the three mirror modules, which are briefly described.

TL;DR: In this paper, the authors present results of a systematic analysis of the XMM-Newton spectra of 40 quasars (QSOs) (z ≤ 1.72) from the Palomar-Green (PG) Bright Quasar Survey sample (MB < −23).

TL;DR: X-ray observations of the core of the Perseus cluster reveal a remarkably quiescent atmosphere in which the gas has a line-of-sight velocity dispersion of 164 ± 10 kilometres per second in the region 30–60 kiloparsecs from the central nucleus, infering that a total cluster mass determined from hydrostatic equilibrium in a central region would require little correction for turbulent pressure.

TL;DR: In particular in the 5-10 keV band these observations present the deepest X-ray survey ever, about a factor 20 more sensitive than the previous BeppoSAX observations.

TL;DR: The first deep X-ray survey with the XMM-Newton observatory during the performance verification phase was reported in this article, where the European Photon Imaging Camera (EPIC) detectors reached a flux limit of 0.31, 1.4, and 2.4 X 10−15−15 cm−2 s−1, respectively in the 0.5-2, 2-10, and 5-10 keV bands.