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arXiv 1401.8143astro-ph.HE
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银河系超新星遗迹W51C(G49 .1-0.1)的XMM-牛顿观测

XMM-Newton observation of the Galactic supernova remnant W51C (G49.1-0.1)

Manami Sasaki, Cornelia Heinitz, Gabriele Warth, Gerd Puehlhofer

摘要:

超新星遗迹(SNR)W51 C是一个位于强烈不均匀星际介质中的银河系天体,有SNR爆炸波与致密分子气体相互作用的迹象。从超新星内部发出的X射线可以揭示不同发射区域的元素丰度,并揭示超新星爆炸的类型及其前身。硬X射线辐射有助于识别SN爆炸中形成的脉冲星及其脉冲星风星云(PWN)的可能候选者。我们分析了用XMM-Newton获得的X射线数据。在选定的区域进行了光谱分析。在SNR明亮的西部,位于致密分子气体复合体旁边的喷出物发射得到了证实。Ne和Mg的丰度表明有一个质量大于20 M_sun的大质量祖先。确定了两个发射硬X射线的扩展区域(分别对应于ASCA和Chandra发现的已知源[KLS 2002] HX 3 west和CXO J192318.5+140305),每个区域内部都有一个额外的点源,并显示出Gamma ~ 1.8的幂律谱。根据它们的X射线发射,这两个源都可以被归类为PWN候选者。

英文摘要:

The supernova remnant (SNR) W51C is a Galactic object located in a strongly inhomogeneous interstellar medium with signs of an interaction of the SNR blast wave with dense molecular gas. Diffuse X-ray emission from the interior of the SNR can reveal element abundances in the different emission regions and shed light on the type of supernova (SN) explosion and its progenitor. The hard X-ray emission helps to identify possible candidates for a pulsar formed in the SN explosion and for its pulsar wind nebula (PWN). We have analysed X-ray data obtained with XMM-Newton. Spectral analyses in selected regions were performed. Ejecta emission in the bright western part of the SNR, located next to a complex of dense molecular gas, was confirmed. The Ne and Mg abundances suggest a massive progenitor with a mass of > 20 M_sun. Two extended regions emitting hard X-rays were identified (corresponding to the known sources [KLS2002] HX3 west and CXO J192318.5+140305 discovered with ASCA and Chandra, respectively), each of which has an additional point source inside and shows a power-law spectrum with Gamma ~ 1.8. Based on their X-ray emission, both sources can be classified as PWN candidates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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