Previous | Session 146 | Next
M. Sun, W. Forman, A. Vikhlinin, C. Jones, M. Markevitch, S. S. Murray (Harvard CFA)
We present radial properties of X-ray emitting gas in about 15 galaxy groups and clusters derived from CHANDRA data, with emphasis on their entropy distributions. Only relaxed systems are chosen for our study, excluding systems with mergers or with significantly disturbed gas cores. It is found that the inner entropy profiles of galaxy groups are flatter than predicted from simulations and flatter than the inner entropy profiles of hot clusters with cooling cores. Clusters with isentropic cores are also found. Variations are found in the inner entropy profiles of these systems, which reflect differences in the physical states of their gas cores. Gas temperature and abundance profiles are also presented and discussed.
Previous | Session 146 | Next
Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.