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Interaction between sheared flow and resistive tearing mode |
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| Authors: | Deng Xiao-hua Wang Shui Wang Jing-fang |
| Institution: | 1 Centre for Astrophysics, University of Sciences & Technology of China, Hefei, 230026, China 2 Department of Space Physics, Wuhan University, Wuchang 430072, China |
| Abstract: | We investigate the nonlinear evolution of resistive tearing mode in a current sheet with a sheared flow in a long, thin cylinder. The results show that a hyperbolic secant (sech) flow field will lead to instability of the resistive tearing mode, formation of magnetic islands and rapid release of magnetic energy. The coupling between sheared flow and the tearing mode and interaction between suprathermal instabilities change the degree of shear in the magnetic field (the electric current gradient) and drive the development of the instability. This process may be one of the mechanisms of solar flares. |
| Keywords: | sheared flow—tearing mode—magnetic field reconnection |
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