The Spectral Slope and Kolmogorov Constant of MHD Turbulence

Details The Spectral Slope and Kolmogorov Constant of MHD Turbulence The Spectral Slope and Kolmogorov Constant of MHD Turbulence

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21721705b&link_type=abstract

American Astronomical Society, AAS Meeting #217, #217.05; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astrophysics

Scientific paper

Magnetohydrodynamic turbulence is present in almost all astrophysical environments. Its properties are important for the dynamics of the intracluster medium, interstellar medium, it affects star formation rate in molecular clouds, transport properties of astrophysical fluids, etc. Recent high-resolution simulations of MHD turbulence support Kolmogorov's -5/3 spectral slope of MHD turbulence. Also, it is only recently that we were able to measure the correct value of Kolmogorov constant for MHD. If one tries to calculate, e.g., turbulent heating from the observed fluctuations using older values of the Kolmogorov constant, this estimate will be off by a factor of several. I will briefly explain why earlier simulations has not been able to capture the inertial range of MHD turbulence.

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