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Astrophysical turbulence modeling
Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
2011 (English)In: Reports on progress in physics (Print), ISSN 0034-4885, E-ISSN 1361-6633, Vol. 74, no 4, 046901- p.Article, review/survey (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 74, no 4, 046901- p.
National Category
Physical Sciences Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-69075DOI: 10.1088/0034-4885/74/4/046901ISI: 000288748600003OAI: diva2:475393
authorCount :2Available from: 2012-01-10 Created: 2012-01-10 Last updated: 2012-01-10Bibliographically approved

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Brandenburg, Axel
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Department of AstronomyNordic Institute for Theoretical Physics (Nordita)
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