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arXiv 0807.3512astro-ph
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超新星遗迹G337 .8-0.1(Kes 41)中热X射线辐射的发现

Discovery of thermal X-ray emission in the Supernova Remnant G337.8-0.1 (Kes 41)

J. A. Combi, J. F. Albacete-Colombo, J. Marti

摘要:

我们在这里报告的第一次检测在X射线波长的超新星遗迹(SNR)G337.8-0.1,进行了与XMM牛顿天文台。利用X射线观测,研究了不同能量范围内残骸的X射线形貌,分析了光谱特性,并探讨了可能的变化行为。SNR显示在X射线区域中的弥漫填充中心结构,在其中心没有紧凑源。我们发现N_H的柱密度很高,大于6.9 * 10^{22} cm^{-2},这支持了一个相对较远的位置(d > 7 kpc)。X射线光谱显示出发射线,表明X射线发射具有薄的热等离子体起源,并且由非平衡电离(NEI)等离子体模型很好地表示。X射线特征和已知的射电参数表明,G337.8-0.1属于新兴的混合形态(MM)信噪比类。

英文摘要:

We report here on the first detection at X-ray wavelengths of the Supernova Remnant (SNR) G337.8-0.1, carried out with the XMM-Newton Observatory. Using the X-ray observations, we studied the X-ray morphology of the remnant at different energy ranges, analysed the spectral properties and investigated a possible variable behavior. The SNR shows a diffuse filled-center structure in the X-ray region with an absence of a compact source in its center. We find a high column density of N_H > 6.9 * 10^{22} cm^{-2}, which supports a relatively distant location (d > 7 kpc). The X-ray spectrum exhibits emission lines, indicating that the X-ray emission has a thin thermal plasma origin, and is well represented by a non-equilibrium ionization (NEI) plasma model. The X-ray characteristics and well-known radio parameters show that G337.8-0.1 belongs to the emerging class of mixed-morphology (MM) SNRs.

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