Journal article
Lepton-driven Nonresonant Streaming Instability
The Astrophysical journal, Vol.923(2), p.208
12/01/2021
DOI: 10.3847/1538-4357/ac23cf
Abstract
A strong super-Alfvenic drift of energetic particles (or cosmic rays) in a magnetized plasma can amplify the magnetic field significantly through nonresonant streaming instability (NRSI). While the traditional analysis is done for an ion current, here we use kinetic particle-in-cell simulations to study how the NRSI behaves when it is driven by electrons or by a mixture of electrons and positrons. In particular, we characterize the growth rate, spectrum, and helicity of the unstable modes, as well the level of the magnetic field at saturation. Our results are potentially relevant for several space/astrophysical environments (e.g., electron strahl in the solar wind, at oblique nonrelativistic shocks, around pulsar wind nebulae), and also in laboratory experiments.
Details
- Title: Subtitle
- Lepton-driven Nonresonant Streaming Instability
- Creators
- Siddhartha Gupta - University of ChicagoDamiano Caprioli - Fermi National Accelerator LaboratoryColby C. Haggerty - University of Hawaii System
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.923(2), p.208
- DOI
- 10.3847/1538-4357/ac23cf
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- IOP Publishing Ltd
- Number of pages
- 12
- Grant note
- 80NSSC18K1218; 80NSSC20K1273; 80NSSC18K1726 / NASA; National Aeronautics & Space Administration (NASA) AST-1714658; AST-2009326; AST-1909778; PHY-1748958; PHY-2010240 / NSF; National Science Foundation (NSF) TG-AST180008 / XSEDE TACC
- Language
- English
- Date published
- 12/01/2021
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9985224413902771
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