On the cosmic ray driven firehose instability

Robyn Scott, Brian Reville*, Anatoly Spitkovsky

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The role of the non-resonant firehose instability in conditions relevant to the precursors of supernova remnant shocks is considered. Using a second order tensor expansion of the Vlasov-Fokker-Planck equation we illustrate the necessary conditions for the firehose to operate. It is found that for very fast shocks, the diffusion approximation predicts that the linear firehose growth rate is marginally faster than it's resonant counterpart. Preliminary hybrid MHD-Vlasov-Fokker-Planck simulation results using young supernova relevant parameters are presented.

Original languageEnglish
Title of host publicationHigh Energy Gamma-Ray Astronomy: 6th International Meeting on High Energy Gamma-Ray Astronomy
PublisherAmerican Institute of Physics Inc.
Volume1792
ISBN (Electronic)9780735414563
DOIs
Publication statusPublished - 04 Jan 2017
Event6th International Symposium on High Energy Gamma-Ray Astronomy - Heidelberg, Germany
Duration: 11 Jul 201615 Jul 2016

Conference

Conference6th International Symposium on High Energy Gamma-Ray Astronomy
CountryGermany
CityHeidelberg
Period11/07/201615/07/2016

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Scott, R., Reville, B., & Spitkovsky, A. (2017). On the cosmic ray driven firehose instability. In High Energy Gamma-Ray Astronomy: 6th International Meeting on High Energy Gamma-Ray Astronomy (Vol. 1792). [040041] American Institute of Physics Inc.. https://doi.org/10.1063/1.4968945