Basic Properties of MHD Turbulence in the Inertial Range

Details Basic Properties of MHD Turbulence in the Inertial Range Basic Properties of MHD Turbulence in the Inertial Range

2011-11-22

arxiv.org/abs/1111.5329v2

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

MNRAS, in press

Scientific paper

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.

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