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arXiv 1109.0982astro-ph.HE
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Ia型超新星2003 lx的X射线辐射探测

Detections of X-ray emissions from Type Ia Supernova 2003lx

K. L. Li, Chun. S. J. Pun

摘要:

我们提出了一个年轻的(几岁)超新星遗迹2003 lx的研究,这是第一次发现的X射线通过两个偶然的雨燕观测在2008年1月和相应的合并图像显示7σ源检测$2.1\pm1.2$角秒(0.9 +/- 0.5雨燕像素)从超新星的光学位置。根据红移z = 0.0377的幂律,估算了0.3 - 2.0 keV波段的X射线光度L_x = 4.8 - 1.7}^{+1.8} \times 10^{41} erg/s,推测伴星的质量损失率为\dot{M} ~ 10^{-4} M_ \sun/年(假设风速v_w = 10 km/s)。热模型拟合结果表明,冲击波阵面温度为kT ~ 0.4keV,与典型的反向冲击波温度一致。X射线发射使我们能够探测爆炸恒星的快速移动碎片与星周介质(CSM)之间的相互作用。这反过来又提供了爆炸系统质量损失历史的足迹,并可能使我们了解祖先及其同伴的性质。

英文摘要:

We present a study of a young (few years old) supernova remnant 2003lx which was first discovered in X-ray through two serendipitous Swift observations in 2008 January and the corresponding merged image revealed a 7σsource detection at $2.1\pm1.2$ arcsec (0.9 +/- 0.5 Swift pixels) from the optical position of the supernova. The X-ray luminosity $L_x = 4.8_{-1.7}^{+1.8} \times 10^{41} erg/s of band 0.3 - 2.0 keV is estimated by a redshift z = 0.0377 power law which can infer a companion star with a mass-loss rate of \dot{M} ~ 10^{-4} M_\sun per year (with assumption of wind velocity v_w = 10 km/s) in the white dwarf binary system. Thermal Model fitting suggests the temperature of the shock wave front is kT ~ 0.4 keV which is consistent with the typical reverse shock temperate. The X-ray emission allows us to probe the interaction between the fast moving debris of the exploded star and the circumstellar medium (CSM). This in turns provides footprints of the mass-loss history of the exploded system, and may allow us to learn about the nature of the progenitor and its companion.

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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