Linking Fluid and Kinetic Scales in Solar Wind Turbulence

Abstract

We investigate possible links between the large-scale and small-scale features of solar wind fluctuations across the frequency break separating fluid and kinetic regimes. The aim is to correlate the magnetic field fluctuations polarization at dissipative scales with the particular state of turbulence within the inertial range of fluctuations. We found clear correlations between each type of polarization within the kinetic regime and fluid parameters within the inertial range. Moreover, for the first time in literature, we showed that left-handed and right-handed polarized fluctuations occupy different areas of the plasma instabilities-temperature anisotropy plot, as expected for Alfv$\acute{\text{e}}$n Ion Cyclotron and Kinetic Alfv$\acute{\text{e}}$n waves, respectively.

5 pages, 4 figures

References in corpus (7)

• Anisotropic scaling of magnetohydrodynamic turbulence
• Small Scale Energy Cascade of the Solar Wind Turbulence
• Wave turbulence in incompressible Hall MHD
• Radial Dependence of the Frequency Break Between Fluid and Kinetic Scales in the Solar Wind Fluctuations
• Spectral Slope Variation at Proton Scales from Fast to Slow Solar Wind
• Physical Interpretation of the Angle Dependent Magnetic Helicity Spectrum in the Solar Wind: The Nature of Turbulent Fluctuations near the Proton Gyroradius Scale
• Solar wind turbulence from MHD to sub-ion scales: high-resolution hybrid simulations

Cited by in corpus (6)

• Nature of stochastic ion heating in the solar wind: testing the dependence on plasma beta and turbulence amplitude
• Solar wind magnetic field background spectrum from fluid to kinetic scales
• Spacetime Hall-MHD turbulence at sub-ion scales: structures or waves?
• Observational evidence for solar wind proton heating by ion-scale turbulence
• Intermittency and Ion Temperature-Anisotropy Instabilities: Simulation and Magnetosheath Observation
• Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?