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HEAD 2000, November 2000 Session 13. Clusters of Galaxies

Summary: HEAD 2000, November 2000
Session 13. Clusters of Galaxies
Display, Tuesday, November 7, 2000, 8:00am­6:00pm, Bora Bora Ballroom
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[13.22] X­ray Spectroscopy of Clusters of Galaxies with
J. R. Peterson (Columbia), M. Audard (PSI), E. Behar (Columbia), A. J. den Boggende (SRON), A. C.
Brinkman (SRON), G. Branduardi­Raymont (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 high­resolution X­ray spectra with the Reflection Grating Spectrometer (RGS) and
medium­resolution X­ray spectra and images with the European Photon Imaging Camera (EPIC) of
clusters of galaxies. The RGS has the unique ability to produce high­resolution 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 XMM­Newton.
Through spatially­resolved spectroscopy, we constrain the temperature and density structure of the
X­ray emitting gas. We make elemental abundance determinations and emission line optical depth
measurements. We relate the measurements to cooling­flow models, discuss the dark matter fraction of


Source: Audard, Marc - INTEGRAL Science Data Centre & Observatory of Geneva, Université de Genève
Guedel, Manuel - Institut für Astronomie, Universität Wien


Collections: Physics