Nonlinear stage of instability due to local Joule-overheating in the solar active regions |
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Authors: | V S Sokolov A G Kosovichev |
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Institution: | (1) Institute of Pure and Applied Mechanics, 630090 Novosibirsk, U.S.S.R.;(2) Moscow State University, 117234 Moscow, U.S.S.R. |
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Abstract: | The numerical solution by a computer of the system of magnetohydrodynamics equations in the one-dimensional approximation serves as the basis for studying the non-linear stage of the instability due to local Joule-overheating of zones with large values of magnetic field gradients in the active regions of the Sun. We have demonstrated the formation of a system of current layers responsible for efficient transformation of magnetic energy into Joule heat and kinetic energy of the macroscopic motion. The specific features of quasi-stationary skinning of magnetic field with gravitation have been noted. |
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