Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-11-02
Recent Res. Dev. Astrophys. 1(2003), 297-323
Astronomy and Astrophysics
Astrophysics
27 pages, 7 figures, invited review, to be published in "Recent Reaserch Developments in Astrophyics" (Research Signpost)(slig
Scientific paper
Turbulence is the most common state of astrophysical flows. In typical astrophysical fluids, turbulence is accompanied by strong magnetic fields, which has a large impact on the dynamics of the turbulent cascade. Recently, there has been a significant breakthrough on the theory of magnetohydrodynamic (MHD) turbulence. For the first time we have a scaling model that is supported by both observations and numerical simulations. We review recent progress in studies of both incompressible and compressible turbulence. We compare Iroshnikov-Kraichnan and Goldreich-Sridhar models, and discuss scalings of Alfven, slow, and fast waves. We discuss the implications of this new insight into MHD turbulence for cosmic ray transport.
Cho Jungyeon
Lazarian Alex
Yan Huirong
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