Suzaku Constraints on Soft and Hard Excess Emissions from Abell 2199

2010 
The nearby (z = 0.03015) cluster of galaxies Abell 2199 was observed by Suzaku in X-rays, with five pointings for � 20 ks each. From the XIS data, the temperature and metal abundance profiles were derived out to � 700 kpc (0.4 times the virial radius). Both of these quantities decrease gradually from the center to peripheries by a factor of � 2, while the oxygen abundance tends to be flat. The temperature within 12 0 (� 430 kpc) is � 4k eV, and the 0.5–10 keV X-ray luminosity integrated up to 30 0 is (2.9 ˙ 0.1) � 10 44 erg s � 1 , in agreement with previous XMM-Newton measurements. Above this thermal emission, no significant excess was found either in the XIS range below � 1 keV, or in the HXD-PIN range above � 15 keV. The 90%-confidence upper limit on the emission measure of an assumed 0.2 keV warm gas is (3.7–7.5) � 10 62 cm � 3 arcmin � 2 , which is 3.7–7.6 times tighter than the detection reported with XMM-Newton. The 90%-confidence upper limit on the 20–80 keV luminosity of any power-law component is 1.8 � 10 43 erg s � 1 , assuming a photon index of 2.0. Although this upper limit does not reject the possible 2.1 � detection by the BeppoSAX PDS, it is a factor of 2.1 tighter than that of the PDS if both are considered upper limits. The non-detection of the hard excess can be reconciled with the upper limit on diffuse radio emission, without invoking very low magnetic fields (< 0.073 � G) which were suggested previously.
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