Turbulence vs. fire hose instabilities: 3-D hybrid expanding box simulations

Abstract

The relationship between a decaying plasma turbulence and proton fire hose instabilities in a slowly expanding plasma is investigated using three-dimensional (3-D) hybrid expanding box simulations. We impose an initial ambient magnetic field along the radial direction, and we start with an isotropic spectrum of large-scale, linearly-polarized, random-phase Alfvenic fluctuations with zero cross-helicity. A turbulent cascade rapidly develops and leads to a weak proton heating that is not sufficient to overcome the expansion-driven perpendicular cooling. The plasma system eventually drives the parallel and oblique fire hose instabilities that generate quasi-monochromatic wave packets that reduce the proton temperature anisotropy. The fire hose wave activity has a low amplitude with wave vectors quasi-parallel/oblique with respect to the ambient magnetic field outside of the region dominated by the turbulent cascade and is discernible in one-dimensional power spectra taken only in the direction quasi-parallel/oblique with respect to the ambient magnetic field; at quasi-perpendicular angles the wave activity is hidden by the turbulent background. These waves are partly reabsorbed by protons and partly couple to and participate in the turbulent cascade. Their presence reduces kurtosis, a measure of intermittency, and the Shannon entropy but increases the Jensen-Shannon complexity of magnetic fluctuations; these changes are weak and anisotropic with respect to the ambient magnetic field and it's not clear if they can be used to indirectly discern the presence of instability-driven waves.

arXiv comment12 pages, 10 figures

References in corpus (26)

• A Statistical Measure of Complexity
• Solar Wind Turbulence and the Role of Ion Instabilities
• Small Scale Energy Cascade of the Solar Wind Turbulence
• Empirical Constraints on Proton and Electron Heating in the Fast Solar Wind
• Finite dissipation and intermittency in magnetohydrodynamics
• Kinetic dissipation and anisotropic heating in a turbulent collisionless plasma
• Coherent events and spectral shape at ion kinetic scales in the fast solar wind turbulence
• High-resolution hybrid simulations of kinetic plasma turbulence at proton scales
• Predicted Impacts of Proton Temperature Anisotropy on Solar Wind Turbulence
• Hybrid-Kinetic Simulations of Ion Heating in Alfvénic Turbulence
• Solar wind turbulent cascade from MHD to sub-ion scales: large-size 3D hybrid particle-in-cell simulations
• Permutation Entropy and Statistical Complexity Analysis of Turbulence in Laboratory Plasmas and the Solar Wind
• Can Hall Magnetohydrodynamics explain plasma turbulence at sub-ion scales?
• A Majority of Solar Wind Intervals Support Ion-Driven Instabilities
• von Kármán energy decay and heating of protons and electrons in a kinetic turbulent plasma
• Anisotropy of third-order structure functions in MHD turbulence
• Dependence of Kinetic Plasma Turbulence on Plasma beta
• Evolution of turbulence in the expanding solar wind, a numerical study
• Plasma turbulence and kinetic instabilities at ion scales in the expanding solar wind
• Imprints of expansion onto the local anisotropy of solar wind turbulence
• Alpha particle thermodynamics in the inner heliosphere fast solar wind
• Turbulent Heating between 0.2 and 1 au: A Numerical Study
• Three-dimensional simulations of solar wind turbulence with the hybrid code CAMELIA
• Mirror instability in the turbulent solar wind
• Nonlinear Evolution of Ion Kinetic Instabilities in the Solar Wind
• Proton fire hose instabilities in the expanding solar wind

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• Complexity-entropy analysis of solar photospheric turbulence: Hinode images of magnetic and Poynting fluxes
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