Magnetic dynamo action in astrophysical turbulence
Astrophysics
2010-01-15 v2 Fluid Dynamics
Plasma Physics
Abstract
We investigate the structure of magnetic field amplified by turbulent velocity fluctuations, in the framework of the kinematic Kazantsev-Kraichnan model. We consider Kolmogorov distribution of velocity fluctuations, and assume that both Reynolds number and magnetic Reynolds number are very large. We present the full numerical solution of the model for the spectra and the growth rates of magnetic fluctuations. We consider astrophysically relevant limits of large and small magnetic Prandtl numbers, and address both helical and nonhelical cases.
Keywords
Cite
@article{arxiv.0809.0720,
title = {Magnetic dynamo action in astrophysical turbulence},
author = {Leonid Malyshkin and Stanislav Boldyrev},
journal= {arXiv preprint arXiv:0809.0720},
year = {2010}
}
Comments
13 pages, 3 figures, minor changes are made to match the published version