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Thermal structure of cooling clusters

Published online by Cambridge University Press:  06 October 2004

Rocco Piffaretti ,
J. Kaastra ,
T. Tamura  and
J. R. Peterson
Rocco Piffaretti
Affiliation:
Institute for Theoretical Physics, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland email: [email protected] Laboratory for Astrophysics, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
J. Kaastra
Affiliation:
SRON, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
T. Tamura
Affiliation:
ISAS, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan
J. R. Peterson
Affiliation:
KIPAC, Stanford University, PO Box 90450, MS 29, Stanford, CA 94039, USA
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Abstract

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We present spatially resolved X-ray spectra taken with the EPIC cameras of XMM-Newton of a sample of 17 cooling clusters and three non-cooling clusters for comparison. The deprojected spectra are analyzed with a single-temperature model. All cooling clusters show a central decrement of the average temperature, most of them of a factor of $\sim$2. Three clusters show a weak temperature decrement, while two others have a very strong temperature decrement. We investigate the role of heat conduction by electrons and find that the theoretically predicted conductivity rates are not high enough to balance radiation losses.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUC195 , March 2004 , pp. 131 - 133
Copyright
© 2004 International Astronomical Union