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首页> 外文会议>Conference on X-ray Universe >LOW MASS X-RAY BINARIES AND GLOBULAR CLUSTERS IN EARLY-TYPE GALAXIES
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LOW MASS X-RAY BINARIES AND GLOBULAR CLUSTERS IN EARLY-TYPE GALAXIES

机译：早期星系的低质量X射线二进制文件和球状簇

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Chandra observations have allowed the detection of a large number of low mass X-ray binaries (LMXBs) in early-type galaxies. Comparisons to catalogs of globular clusters (GCs) from Hubble Space Telescope observations have shown that a high fraction of the LMXBs in early-type galaxies are associated with GCs. The fraction of LMXBs associated with globular clusters increases along the Hubble sequence from spiral bulges to SOs to Es to cDs. On the other hand, the fraction of globular clusters which contain X-ray sources appears to be roughly constant (～4% for L{sub}X≥10{sup}38 ergs/s, ～10% for L{sub}X≥10{sup}37 ergs/s). There is a strong tendency for the X-ray sources to be associated with the optically more luminous GCs. There is a trend for the X-ray sources to be found preferentially in redder, more metal-rich GCs, which is independent of optical luminosity correlation. The relative role of formation of LMXBs in GCs and in situ formation in the field is uncertain. One of the best ways to study this is to compare the spatial distribution of GC-LMXBs, field LMXBs, GCs, and optical light in the galaxies. Theoretical models and results of fits to the observed distributions are presented. Our multiple observations of NGC 4365 and NGC 4697 over several years allow us to study the variability of LMXBs. We have detected very luminous X-ray flares from three sources in NGC 4697 with durations of ～70 to ～3000 seconds, which have no clear analogue in our Galaxy. One suggestion is that these are due to micro-blazars; X-ray binaries with accreting black holes with jets which are pointed in our direction.
机译：钱德拉观察已经在早期型星系允许大量低质量X射线双星（LMXBs）的检测。比较从哈勃望远镜观察球状簇（GCS）的目录中已经表明，在早期型星系的LMXBs的高比例与GC的关联。沿着哈伯序列球状簇增大从螺旋凸起到SOS到居到CDS相关LMXBs的分数。在另一方面，其中包含X射线源球状簇的馏分似乎是大致恒定（〜对于L {}亚{X≥10SUP} 38支尔格4％/秒，约10％的L- {子} X ≥10{SUP} 37支尔格/ S）。存在用于将与光学更明亮的GC相关联的X射线源的强烈倾向。存在用于X射线源的趋势要在更红优先发现，更富含金属的GCS，其为独立的光学光度的关系的。形成LMXBs的在GC和在现场原位形成的相对作用是不确定的。其中一个研究这个最好的方法是比较GC-LMXBs，现场LMXBs，地方选区的空间分布，并在星系可见光。理论模型和配合观测到的分布的结果。在过去几年我们的NGC 4365和NGC 4697多观察让我们来研究LMXBs的变化。我们在NGC 4697与〜70至〜3000秒的持续时间，这在我们的银河系没有明确的模拟检测非常明亮的X射线耀斑三个来源。一个建议是，这些是由于微耀变体; X射线双星与吸积黑洞与都指向我们的方向喷射。

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