Journal
REPORTS ON PROGRESS IN PHYSICS
Volume 74, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0034-4885/74/4/046901
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Funding
- European Research Council [227952]
- Swedish Research Council [621-2007-4064]
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The role of turbulence in various astrophysical settings is reviewed. Among the differences to laboratory and atmospheric turbulence we highlight the ubiquitous presence of magnetic fields that are generally produced and maintained by dynamo action. The extreme temperature and density contrasts and stratifications are emphasized in connection with turbulence in the interstellar medium and in stars with outer convection zones, respectively. In many cases turbulence plays an essential role in facilitating enhanced transport of mass, momentum, energy and magnetic fields in terms of the corresponding coarse-grained mean fields. Those transport properties are usually strongly modified by anisotropies and often completely new effects emerge in such a description that have no correspondence in terms of the original (non-coarse-grained) fields.
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