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arXiv 1208.5928astro-ph.HE
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超新星遗迹G296 .7-0.9的X射线

The Supernova Remnant G296.7-0.9 in X-rays

Tobias Prinz, Werner Becker

摘要:

目的:对超新星遗迹G296.7-0.9在0.2-12 keV的X射线波段进行了详细的研究。研究方法:利用XMM-Newton的数据,我们对G296.7-0.9进行了光谱成像分析,以推断残骸的基本参数,并寻找与之相关的年轻中子星的证据。它的X射线谱可用吸收非平衡碰撞等离子体模型来描述,氢密度为N_H=1.24 - 0.05 ^{+0.07} × 10^{22} cm^{-2},等离子体温度为6.2^{+0.9}-0.8}百万开尔文。分析结果表明,其残留年龄为5800 ~ 7600年,距离为9.8 - 0.7 ^{+1.1} kpc。后者表明与附近的HII区域有空间联系。我们没有发现与残骸有关的年轻中子星的证据。

英文摘要:

Aims: We present a detailed study of the supernova remnant (SNR) G296.7-0.9 in the 0.2-12 keV X-ray band. Methods: Using data from XMM-Newton we performed a spectro-imaging analysis of G296.7-0.9 in order to deduce the basic parameters of the remnant and to search for evidence of a young neutron star associated with it. Results: In X-rays the remnant is characterized by a bright arc located in the south-west direction. Its X-ray spectrum can best be described by an absorbed non-equilibrium collisional plasma model with a hydrogen density of N_H=1.24_{-0.05}^{+0.07} x 10^{22} cm^{-2} and a plasma temperature of 6.2^{+0.9}_{-0.8} million Kelvin. The analysis revealed a remnant age of 5800 to 7600 years and a distance of 9.8_{-0.7}^{+1.1} kpc. The latter suggests a spatial connection with a close-by HII region. We did not find evidence for a young neutron star associated with the remnant.

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