X-ray spectroscopy of galaxy clusters.

X-ray spectroscopy of galaxy clusters.
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星系团的 X 射线光谱。

DOI:
10.1007/978-94-011-1022-8_23
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发表时间:
1994
影响因子:
4.8
通讯作者:
M. Arnaud
M. Arnaud
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
M. Arnaud

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在过去的几年中,x射线卫星EXOSAT和GlNGA获得的结果,结合爱因斯坦卫星(SSS和MPC)的更古老的数据,大大增加了我们对星系团内介质光谱特性的认识。在x射线光谱学中已经观察到大约100个星团,可以进行详细的统计研究。GlNGA卫星提供了非常精确的发射加权温度和铁丰度的估计,在附近星团的大样本上,这些数量的空间分布的一些指示,以及第一次,遥远星团的光谱数据(0.1 < z < 0.3)。空间分辨光谱测量仍然很少,但正在增加。这些数据揭示了一些长期存在的问题,如星系团内部介质的起源和富集,气体的能量含量和加热,星系团的形成和演化以及宇宙学参数。
In the past few years, the results obtained with the X-ray satellites EXOSAT and GlNGA, combined with more ancient data from the EINSTEIN satellite (SSS and MPC), have greatly increased our knowledge of the spectroscopic properties of the intra-cluster medium. About 100 clusters have now been observed in X-ray spectroscopy, allowing detailed statistical studies. The GlNGA satellite has provided very precise estimates of the overall emission weighted temperature and iron abundance on a large sample of nearby clusters, some indication on the spatial distribution of these quantities and, for the first time, spectroscopic data on distant clusters (0.1 < z < 0.3). Spatially resolved spectral measurements are still scarce but increasing. These data have shed some light on long standing problems like the origin and enrichment of the intra-cluster medium, the energy content and heating of the gas, the formation and evolution of clusters and the cosmological parameters.
K.Koyama:“室女座星系团内气体中的铁分布”自然。
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