The saturation of the Bell instability and its implications for cosmic ray acceleration and transport

2023/10/10 by Damiano Caprioli, Caprioli, D., Georgios Zacharegkas +7
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Ionosphere and magnetosphere dynamics #Plasma Physics (physics.plasm-ph) #Solar and Space Plasma Dynamics #Solar and Stellar Astrophysics (astro-ph.SR) #Space Physics (physics.space-ph)

paper · pdf · doi:10.48550/arxiv.2310.07038

openalex publication_date 2023/10/10 · openalex created_date 2023/10/13 · openalex updated_date 2026/07/28

Abstract

The non-resonant (Bell) streaming instability driven by energetic particles is crucial for producing amplified magnetic fields that are key to the acceleration of cosmic rays (CRs) in supernova remnants, around Galactic and extra-galactic CR sources, and for the CR transport. We present a covariant theory for the saturation of the Bell instability, substantiated by self-consistent kinetic simulations, that can be applied to arbitrary CR distributions and discuss its implications in several heliospheric and astrophysical contexts.

Related

• A Kinetic Study of the Saturation of the Bell Instability
• Modeling the Saturation of the Bell Instability Using Hybrid Simulations
• Modeling the Saturation of the Bell Instability using Hybrid Simulations
• Impact of Cosmic Ray Distribution on the Growth and Saturation of Bell Instability
• Understanding Streaming Instabilities in the Limit of High Cosmic Ray Current Density