Interaction between sheared flow and resistive tearing mode

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Sheared Flow-Tearing Mode-Magnetic Field Reconnection

Scientific paper

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.

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