NIFS-495

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Author(s): T. -H. Watanabe and T. Sato Title: Magnetohydrodynamic Approach to the Feedback Instability Date of publication: July 1997 Key words: magnetohydrodynamics, weakly ionized plasma, auroras Abstract: Starting from the ideal magnetohydrodynamic and two-fluid equations, the linear analysis of the feedback instability has been made in a coupled system of perfectly and partially ionized plasmas The obtained eigenfunction and frequency of the unstable mode are qualitatively consistent with observations of auroral arcs.

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