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arXiv 1302.4328astro-ph.HEastro-ph.GA
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超新星1006周围快速激波的整体观测

An Integral View of Fast Shocks around Supernova 1006

Sladjana Nikolić, Glenn van de Ven, Kevin Heng, Daniel Kupko, Bernd Husemann, John C. Raymond, John P. Hughes, Jesús Falcón-Barroso

摘要:

超新星遗迹是我们宇宙邻居中最壮观的天体物理活塞的例子之一。超新星爆炸排出的气体以约1000 km/s的速度射入周围稀薄的星际介质,产生激发氢线的冲击。我们使用光学积分场摄谱仪获得高分辨率的空间光谱图,使我们能够详细研究超新星1006西北边缘的冲击。在133个天空位置探测到了双分量Hα线。宽谱线宽度和宽谱线与窄谱线强度比在数十个原子平均自由程上的变化表明存在超热质子,这是产生高能宇宙射线的潜在种子粒子。

英文摘要:

Supernova remnants are among the most spectacular examples of astrophysical pistons in our cosmic neighborhood. The gas expelled by the supernova explosion is launched with velocities ~ 1000 km/s into the ambient, tenuous interstellar medium, producing shocks that excite hydrogen lines. We have used an optical integral-field spectrograph to obtain high-resolution spatial-spectral maps that allow us to study in detail the shocks in the northwestern rim of supernova 1006. The two-component Hα line is detected at 133 sky locations. Variations in the broad line widths and the broad-to-narrow line intensity ratios across tens of atomic mean free paths suggest the presence of suprathermal protons, the potential seed particles for generating high-energy cosmic-rays.

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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