Bulletin of Taras Shevchenko National University of Kyiv. Astronomy, no. 51, p. 28-30 (2014)
Macroscopic structures in nature and the Sun
V. Krivodubskij, Dr. Phys. and Math. Sciences
Taras Shevchenko National University of Kyiv
Abstract
The review of self-organization phenomena in nature, caused by negative turbulent viscosity of the plasma, was made. The role of small-scale α2-effect by Kraichnan in the formation of discrete magnetic fields in the solar convective zone (SCZ) was studied. This effect causes a decrease in the total coefficient of turbulent magnetic diffusion. The results of our calculations for two models of the SCZ have shown that the value of the helical negative coefficient of turbulent diffusion of vector magnetic field in the deep layers reaches about two thirds of the value of the positive coefficient of turbulent diffusion of scalar field. This should greatly facilitate self-organization initially continuous weak magnetic fields in the thin isolated magnetic field tubes.
Keywords
Macroscopic structure, Sun.
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