Basic Properties of MHD Turbulence in the Inertial Range
Astrophysics of Galaxies
2015-06-03 v2 Solar and Stellar Astrophysics
Fluid Dynamics
Plasma Physics
Abstract
We revisit the issue of spectral slope of MHD turbulence in the inertial range and argue that numerics favor Goldreich-Sridhar -5/3 slope rather than -3/2 slope. We also did precision measurements of anisotropy of MHD turbulence and determined the anisotropy constant C_A=0.34 of Alfvenic turbulence. Together with previously measured Kolmogorov constant C_K=4.2, or 3.3 for purely Alfvenic case, it constitutes a full description of MHD cascade in terms of spectral quantities, which is of high practical value for astrophysics.
Keywords
Cite
@article{arxiv.1111.5329,
title = {Basic Properties of MHD Turbulence in the Inertial Range},
author = {Andrey Beresnyak},
journal= {arXiv preprint arXiv:1111.5329},
year = {2015}
}
Comments
MNRAS, in press