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arXiv 1701.05481astro-ph.HE
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背景等离子体的Cosmic Ray(随机)加速

Cosmic Ray (Stochastic) Acceleration from a Background Plasma

V. A. Dogiel, K. S. Cheng, D. O. Chernyshov, A. D. Erlykin, C. -M. Ko, A. W. Wolfendale

摘要:

我们给一个简短的审查过程的随机加速在银河系。我们讨论:如何正确估计被加速粒子的数目,以及在什么条件下随机机制能够产生幂律非热谱。本文分析了星系晕中的随机加速现象,并讨论了这种机制是否能导致产生高能电子,从而从巨大的费米泡中发射出γ射线和微波辐射。最后,我们讨论了随机加速的影响是否可以解释银河系盘中的CR分布(CR梯度)。

英文摘要:

We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra. We present an analysis of stochastic acceleration in the Galactic halo and discuss whether this mechanism can be responsible for production of high energy electrons there, which emit gamma-ray and microwave emission from the giant Fermi bubbles. Lastly, we discuss whether the effects of stochastic acceleration can explain the CR distribution in the Galactic disk (CR gradient).

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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