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Suzaku Observations of the Cluster of Galaxies Abell 2052

机译：朱雀对阿贝尔2052年星系团的观测

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摘要

The results from Suzaku X-ray Imaging Spectrometer (XIS) observations of relaxed cluster of galaxies, Abell 2052, are presented. Offset pointing data were used to estimate the Galactic foreground emission in the direction of the cluster. Significant soft X-ray excess emission above this foreground, the intracluster medium emission, and other background components was confirmed and resolved both radially and spectroscopically. This excess can be described either by (a) local variations of known Galactic emission components or by (b) an additional thermal component with a temperature of about 0.2 keV, possibly associated with the cluster. The radial temperature and metallicity profiles of the intracluster medium were measured within similar to 20' in radius (about 60% of the virial radius) from the cluster center. The temperature drops radially to 0.5-0.6 of the peak value at a radius of similar to 15'. The gas-mass-weighted metal abundance averaged over the observed region was found to be 0.21 +/- 0.05 times solar.
机译：介绍了朱雀X射线成像光谱仪（XIS）对星系松弛星团Abell 2052的观测结果。偏移指向数据用于估计星团方向上的银河前景发射。确认并在径向和光谱上解析了高于此前景的明显的软X射线过量发射，簇内介质发射以及其他背景成分。可以通过（a）已知星系发射分量的局部变化或（b）可能与该簇相关的温度约为0.2 keV的附加热分量来描述这种过量。在距簇中心约20'的半径（约为病毒半径的60％）内测量了簇内介质的径向温度和金属度分布。温度以类似于15'的半径径向下降到峰值的0.5-0.6。发现在整个观察区域内平均获得的气体质量加权金属丰度为太阳光的0.21 +/- 0.05倍。

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