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J. R. Peterson (Columbia), M. Audard (PSI), E. Behar (Columbia), A. J. den Boggende (SRON), A. C. Brinkman (SRON), G. Branduardi-Raymont (MSSL), J. Cottam (Columbia), C. Erd (ESTEC), C. Ferringo (SRON), M. Guedel (PSI), J. W. den Herder (SRON), J. G. Jernigan (Berkeley), J. S. Kaastra (SRON), S. M. Kahn (Columbia), R. Mewe (SRON), F. B. S. Paerels (Columbia), A. P. Rasmussen (Columbia), M. Sako (Columbia), T. Tamura (SRON), I. Sakelliou (MSSL), K. Thomsen (SRON), C. de Vries (SRON)
We present high-resolution X-ray spectra with the Reflection Grating Spectrometer (RGS) and medium-resolution X-ray spectra and images with the European Photon Imaging Camera (EPIC) of clusters of galaxies. The RGS has the unique ability to produce high-resolution spectra of moderately extended objects. This has enabled detailed spectroscopy of compact and luminous clusters of galaxies. We present the first spectra of a selection of clusters that have been observed with the XMM-Newton. Through spatially-resolved spectroscopy, we constrain the temperature and density structure of the X-ray emitting gas. We make elemental abundance determinations and emission line optical depth measurements. We relate the measurements to cooling-flow models, discuss the dark matter fraction of clusters, and address the origin of the intergalactic medium.
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