Galactic Spiral Arms and Dynamo Control Parameters |
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Authors: | Shukurov A. Sokoloff D. |
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Affiliation: | (1) Department of Mathematics, University of Newcastle upon Tyne, U.K.;(2) Department of Physics, Moscow State University, Moscow, Russia. |
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Abstract: | We discuss the effects of galactic spiral arms on the -coefficient, turbulent diffusivity and turbulent energy density of the interstellar turbulence. We argue that the -coefficient and the dynamo number are larger in the interarm regions, whereas the kinetic energy density of turbulence is larger in the arms; the turbulent magnetic diffusivity can be only weakly affected by the spiral pattern. |
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Keywords: | Galactic spiral arms interstellar turbulence galactic magnetic fields mean-field dynamos |
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