8th HEAD Meeting, 8-11 September, 2004
Session 2 Galaxy Clusters and the Intergalactic Medium
Poster, Wednesday, September 8, 2004, 9:00am-10:00pm

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[2.16] The Temperature Profile of A1795 Near Its Virial Radius

J. A. Irwin, C. R. Mullis (European Southern Observatory), R. A. Dupke, J. N. Bregman (University of Michigan)

While nearly all hydrodynamical simulations of the hot gas contained within clusters of galaxies predict a rapid decline in the temperature of the hot gas outside of ~50% of the virial radius, observational evidence of this decline has been sparse, owing to low X-ray count rates at large radii. In this poster, we use multiple offset XMM-Newton observations to determine the temperature (and abundance) behavior of the cluster gas at large (~70% of the virial radius) radii within A1795, one of the brightest relaxed clusters in the local Universe. We will compare the observations to simulations and discuss the implications of our results.

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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.