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

Research output: Contribution to journalArticlepeer-review


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).

Original languageEnglish
Pages (from-to)72-79
Number of pages8
JournalNuclear and Particle Physics Proceedings
StatePublished - 1 Apr 2018


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