Spatially resolved spectroscopy of the cluster of galaxies A 2199

被引：1
|
作者：
Kaastra, JS [1 ]
Bleeker, JAM [1 ]
Mewe, R [1 ]
机构：
[1] SRON, NL-3584 CA Utrecht, Netherlands
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1999年 / 69卷 / 1-3期
关键词：
D O I：
10.1016/S0920-5632(98)00292-8
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The X-ray spectrum of the bright cD cluster of galaxies A 2199 is studied using all instruments of BeppoSAX. Spatially resolved spectroscopy with the MECS instrument shows the presence of spectral hardening in the outer parts of the cluster. The presence of a hard tail is also confirmed by the simultaneous PDS observations. Our analysis shows that the hard component cannot be due to a population of point sources like AGN but corresponds to a diffuse non-thermal component. We also discuss the presence of resonance scattering in this cluster.
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页码：567 / 572
页数：6
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