X-ray Spectroscopy of the Cluster of Galaxies Abell 1795 with XMM-Newton

Abstract

The initial results from XMM-Newton observations of the rich cluster of galaxies Abell 1795 are presented. The spatially-resolved X-ray spectra taken by the European Photon Imaging Cameras (EPIC) show a temperature drop at a radius of $\sim 200$ kpc from the cluster center, indicating that the ICM is cooling. Both the EPIC and the Reflection Grating Spectrometers (RGS) spectra extracted from the cluster center can be described by an isothermal model with a temperature of $\sim 4$ keV. The volume emission measure of any cool component ($<1$ keV) is less than a few % of the hot component at the cluster center. A strong OVIII Lyman-alpha line was detected with the RGS from the cluster core. The O abundance and its ratio to Fe at the cluster center is 0.2--0.5 and 0.5--1.5 times the solar value, respectively.

Accepted: A&A Letters, 2001, 6 pages

References in corpus (5)

• The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• X-ray Imaging Spectroscopy of Abell 1835
• XMM-Newton observations of the cluster of galaxies Sersic 159-03
• The properties of cooling flows in X-ray luminous clusters of galaxies
• UV observations of the galaxy cluster Abell 1795 with the optical monitor on XMM-Newton

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