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Violation of the zeroth law of turbulence in space plasmas
Romain Meyrand, Jonathan Squire, Alexander A. Schekochihin +1
The zeroth law of turbulence states that, for fixed energy input into large-scale motions, the statistical steady state of a turbulent system is independent of microphysical dissip…
Multi-Species Measurements of the Firehose and Mirror Instability Thresholds in the Solar Wind
C. H. K. Chen, L. Matteini, A. A. Schekochihin +5
The firehose and mirror instabilities are thought to arise in a variety of space and astrophysical plasmas, constraining the pressure anisotropies and drifts between particle speci…
A statistical model of three-dimensional anisotropy and intermittency in strong Alfvénic turbulence
A. Mallet, A. A. Schekochihin
We propose a simple statistical model of three-dimensionally anisotropic, intermittent, strong Alfvénic turbulence, incorporating both critical balance and dynamic alignment. Our m…
Alignment and scaling of large-scale fluctuations in the solar wind
Robert T. Wicks, Alfred Mallet, Timothy S. Horbury +3
We investigate the dependence of solar wind fluctuations measured by the Wind spacecraft on scale and on the degree of alignment between oppositely directed Elsasser fields. This a…
Anisotropy of Alfvénic Turbulence in the Solar Wind and Numerical Simulations
C. H. K. Chen, A. Mallet, T. A. Yousef +2
We investigate the anisotropy of Alfvénic turbulence in the inertial range of slow solar wind and in both driven and decaying reduced magnetohydrodynamic simulations. A direct comp…
Power and spectral index anisotropy of the entire inertial range of turbulence in the fast solar wind
R. T. Wicks, T. S. Horbury, C. H. K. Chen +1
We measure the power and spectral index anisotropy of high speed solar wind turbulence from scales larger than the outer scale down to the ion gyroscale, thus covering the entire i…