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The acceleration of cosmic rays in shock fronts – I

A. R. Bell
- 01 Feb 1978 - 
- Vol. 182, Iss: 2, pp 147-156
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This article is published in Monthly Notices of the Royal Astronomical Society.The article was published on 1978-02-01 and is currently open access. It has received 2613 citations till now. The article focuses on the topics: Shock waves in astrophysics & Fermi acceleration.

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Journal ArticleDOI

Solar energetic particle variations

TL;DR: In the largest solar energetic-particle (SEP) events, acceleration occurs at shock waves driven out from the Sun by coronal mass ejections (CMEs) as mentioned in this paper.
Journal ArticleDOI

A filamentation instability for streaming cosmic-rays

TL;DR: In this article, the authors demonstrate that cosmic rays form filamentary structures in the precursors of supernova remnant shocks due to their self-generated magnetic fields, and that the cosmic ray filamentation results in the growth of a long-wavelength instability, and naturally couples the rapid nonlinear amplification on small scales to larger length-scales.
Journal ArticleDOI

Shock geometry and spectral breaks in large sep events

TL;DR: In this article, the authors examined the Q/A dependence of the spectral break energy in solar energetic particle (SEP) spectra and showed that α ≥ 1/5 for a quasi-perpendicular shock.
Journal ArticleDOI

Shock waves and cosmic ray acceleration in the outskirts of galaxy clusters

TL;DR: In this article, the authors examine the properties of shocks that form within r {sub 200} in sample galaxy clusters from structure formation simulations and show that the energetic shocks reside mostly in the outskirts and a substantial fraction of them are induced by infall of the warm-hot intergalactic medium from filaments.
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