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arXiv 1301.7264astro-ph.HE
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Cosmic ray加速和超新星遗迹逃逸

Cosmic ray acceleration and escape from supernova remnants

AR Bell, KM Schure, B Reville, G Giacinti

摘要:

只有当超新星遗迹激波前的磁场被逃逸的宇宙线强烈放大时,才有可能在几PeV处加速到谱中的拐点。一个模型制定的逃逸CR携带的电荷预测CR的最大能量和CR释放到周围介质中的能谱。我们发现,历史的SNR,如Cas A,第谷和开普勒可能是扩大太慢,以加速CR的膝盖在目前的时间。

英文摘要:

Galactic cosmic ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CR escaping the SNR. A model formulated in terms of the electric charge carried by escaping CR predicts the maximum CR energy and the energy spectrum of CR released into the surrounding medium. We find that historical SNR such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CR to the knee at the present time.

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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