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arXiv 0810.3680astro-ph
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年轻超新星遗迹加速Cosmic Ray的多波长特征

Multiwavelength Signatures of Cosmic Ray Acceleration by Young Supernova Remnants

Jacco Vink

摘要:

概述了年轻超新星遗迹的多波长观测,重点是有效的宇宙射线加速的观测特征。一些可能归因于有效的宇宙射线加速的效应是年轻超新星遗迹中的径向磁场,X射线成像光谱测定的磁场放大,大的冲击后压缩因子的证据,以及低等离子体温度,用高分辨率光学/紫外/X射线光谱测量。特别强调的是冲击后等离子体的光谱,这提供了一个机会,直接测量冲击后的温度。在有效的宇宙射线加速的存在下,冲击后的温度预计将低于根据强冲击的标准方程。对于许多超新星遗迹来说,情况似乎确实如此。

英文摘要:

An overview is given of multiwavelength observations of young supernova remnants, with a focus on the observational signatures of efficient cosmic ray acceleration. Some of the effects that may be attributed to efficient cosmic ray acceleration are the radial magnetic fields in young supernova remnants, magnetic field amplification as determined with X-ray imaging spectroscopy, evidence for large post-shock compression factors, and low plasma temperatures, as measured with high resolution optical/UV/X-ray spectroscopy. Special emphasis is given to spectroscopy of post-shock plasma's, which offers an opportunity to directly measure the post-shock temperature. In the presence of efficient cosmic ray acceleration the post-shock temperatures are expected to be lower than according to standard equations for a strong shock. For a number of supernova remnants this seems indeed to be the case.

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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