Scale dependence of alpha effect and turbulent diffusivity

2008/01/08 by Axel Brandenburg, A. Brandenburg, K.‐H. Rädler +2 · 5 citations
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Geomagnetism and Paleomagnetism Studies #Ionosphere and magnetosphere dynamics #Solar and Space Plasma Dynamics #astro-ph

paper · pdf · doi:10.1051/0004-6361:200809365

published as Astron. Astrophys. 482, 739-746 (2008) · 8 pages, 7 figures, submitted to A&A

arxiv created 2008/01/08 · openalex publication_date 2008/03/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

Aims. We determine the alpha effect and turbulent magnetic diffusivity for mean magnetic fields with profiles of different length scales from simulations of isotropic turbulence. We then relate these results to nonlocal formulations in which alpha and the turbulent magnetic diffusivity correspond to integral kernels.

Citations

• Minimal tau approximation and simulations of the alpha effect

Cited by

• Turbulent diffusion with rotation or magnetic fields
• Turbulent transport in hydromagnetic flows
• Magnetohydrodynamic experiments on cosmic magnetic fields
• Simulations of Galactic Dynamos
• Solar dynamo model with nonlocal alpha-effect

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