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Non-linear magnetic diffusivity in mean-field electrodynamics

Lookup NU author(s): Dr Vadim Urpin, Professor Axel Brandenburg


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We consider non-linear transport and drift processes caused by an inhomogeneous magnetic field in a turbulent fluid. The coefficients of magnetic diffusivity and drift velocity are calculated by making use of the second-order correlation approximation. Transport processes in the presence of a sufficiently strong magnetic field become anisotropic with larger diffusion rate and turbulent electrical resistivity across the field than along the field. Non-linear effects also lead to a drift of the magnetic field away from the regions with a higher magnetic energy.

Publication metadata

Author(s): Urpin V, Brandenburg A

Publication type: Article

Publication status: Published

Journal: Monthly Notices of the Royal Astronomical Society

Year: 2000

Volume: 316

Issue: 3

Pages: 684-688

ISSN (print): 0035-8711

ISSN (electronic): 1365-2966

Publisher: Wiley-Blackwell Publishing Ltd.


DOI: 10.1046/j.1365-8711.2000.03581.x


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