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An Isaac Newton Institute Workshop

Reconnection in the Sun and Magnetosphere (Hewlett-Packard and Spitalfields Days)

Electron-inertia Effects on Driven Magnetic Reconnection

Authors: Bhimsen K. Shivamoggi (Univ. of Central Florida), Nasser Al-Salti (Univ. of Central Florida)

Abstract

Electron-inertia effects on the magnetic reconnection induced by perturbing the boundaries of a slab of plasma with a magnetic neutral surface inside are considered. Cases with the boundaries perturbed at rates slow or fast compared with the hydromagnetic evolution rate are considered separately. When the boundaries are perturbed at a rate slow compared with the hydromagnetic evolution rate and fast compared with the resistive evolution rate a current sheet forms at the magnetic neutral surface which then disappears via exponential damping and diffusion and reconnection takes place. On the other hand, when the boundaries are perturbed at a rate fast compared with the hydromagnetic evolution rate, there is no time for the current sheet formation and reconnection to take place [1]. References: [1] N. Al-Salti and B. K. Shivamoggi: Phys. Plasmas, vol.10, p. 4271, (2003).