Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20514603s&link_type=abstract
American Astronomical Society Meeting 205, #146.03; Bulletin of the American Astronomical Society, Vol. 36, p.1591
Astronomy and Astrophysics
Astronomy
Scientific paper
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.
Forman William
Jones Christine
Markevitch Maxim
Murray Stephen S.
Sun Mingrui
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