On the cosmic ray driven firehose instability

Robyn Scott; Brian Reville; Anatoly Spitkovsky

doi:10.1063/1.4968945

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 proceeding › Conference 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 language	English
Title of host publication	High Energy Gamma-Ray Astronomy: 6th International Meeting on High Energy Gamma-Ray Astronomy
Publisher	American Institute of Physics Inc.
Volume	1792
ISBN (Electronic)	9780735414563
DOIs	https://doi.org/10.1063/1.4968945
Publication status	Published - 04 Jan 2017
Event	6th International Symposium on High Energy Gamma-Ray Astronomy - Heidelberg, Germany Duration: 11 Jul 2016 → 15 Jul 2016

Conference

Conference	6th International Symposium on High Energy Gamma-Ray Astronomy
Country/Territory	Germany
City	Heidelberg
Period	11/07/2016 → 15/07/2016

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "On the cosmic ray driven firehose instability",

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.",

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year = "2017",

month = jan,

day = "4",

doi = "10.1063/1.4968945",

language = "English",

volume = "1792",

booktitle = "High Energy Gamma-Ray Astronomy: 6th International Meeting on High Energy Gamma-Ray Astronomy",

publisher = "American Institute of Physics Inc.",

note = "6th International Symposium on High Energy Gamma-Ray Astronomy ; Conference date: 11-07-2016 Through 15-07-2016",

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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., 6th International Symposium on High Energy Gamma-Ray Astronomy, Heidelberg, Germany, 11/07/2016. https://doi.org/10.1063/1.4968945

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T1 - On the cosmic ray driven firehose instability

AU - Scott, Robyn

AU - Reville, Brian

AU - Spitkovsky, Anatoly

PY - 2017/1/4

Y1 - 2017/1/4

N2 - 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.

AB - 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.

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U2 - 10.1063/1.4968945

DO - 10.1063/1.4968945

M3 - Conference contribution

AN - SCOPUS:85010951521

VL - 1792

BT - High Energy Gamma-Ray Astronomy: 6th International Meeting on High Energy Gamma-Ray Astronomy

PB - American Institute of Physics Inc.

T2 - 6th International Symposium on High Energy Gamma-Ray Astronomy

Y2 - 11 July 2016 through 15 July 2016

ER -

On the cosmic ray driven firehose instability

Abstract

Conference

ASJC Scopus subject areas

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