Turbulent diffusion and galactic magnetism
2009 (English)In: Proceedings of the International Astronomical Union, ISSN 1743-9213, Vol. 5, 432-433 p.Article in journal (Other academic) Published
Using the test-field method for nearly irrotational turbulence driven by spherical expansion waves it is shown that the turbulent magnetic diffusivity increases with magnetic Reynolds numbers. Its value levels off at several times the rms velocity of the turbulence multiplied by the typical radius of the expansion waves. This result is discussed in the context of the galactic mean-field dynamo.
Place, publisher, year, edition, pages
Cambridge University Press, 2009. Vol. 5, 432-433 p.
turbulence, (magnetohydrodynamics:) MHD, galaxies: magnetic fields
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:su:diva-70505DOI: 10.1017/S1743921310010148OAI: oai:DiVA.org:su-70505DiVA: diva2:481687
Highlights of Astronomy, Vol. 15, ed. E. de Gouveia Dal Pino, CUP2012-01-222012-01-222012-03-26Bibliographically approved