Probing the astrophysics of cluster outskirts | Astronomy & Astrophysics (A&A)

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Table 1:

Fitting parameters from ICP temperature profiles.
Cluster	c^*	a	$r_{\rm b}/R$	a'	$\chi^2$ ^**
A1795	$8.5^{\rm +1.9}_{-1.9}$	$1.2^{\rm +0.3}_{-0.3}$	$0.28^{\rm +0.02}_{-0.02}$	$1.8^{\rm +1.3}_{-1.3}$	0.3 (2.6)
PKS0745-191	$7.6^{\rm +1.7}_{-1.7}$	$1.9^{\rm +1.3}_{-1.3}$	$0.23^{\rm +0.03}_{-0.03}$	$1.1^{\rm +0.7}_{-0.7}$	1.4 (4.4)
A2204	$5.5^{\rm +1.1}_{-1.1}$	$1.5^{\rm +1.1}_{-1.1}$	$0.31^{\rm +0.07}_{-0.07}$	$0.6^{\rm +0.4}_{-0.4}$	1.1 (2.1)
A1413	$8.3^{\rm +1.7}_{-1.7}$	$0.9^{\rm +0.3}_{-0.3}$	$0.27^{\rm +0.07}_{-0.07}$	$0.2^{\rm +0.03}_{-0.03}$	1.2 (1.9)
A1689 $^{^\dag }$	$12.4^{\rm +5.3}_{-5.3}$	$0.7^{\rm +0.3}_{-0.3}$	$0.5^{\rm +0.1}_{-0.1}$	$1.6^{\rm +1.2}_{-1.2}$	1.5 (1.7)

Notes. ^(*) DM concentration estimated from X rays. ^(**) Reduced $\chi^2$ values for fits with the entropy run in Eq. (4); in parenthesis the values with a'=0, corresponding to Eq. (1). $^{(\dag )}$ CC classification is controversial (see Riemer-Sørensen et al. 2009).

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