Hall magnetohydrodynamics near an X-type magnetic neutral line

    Authors

    B. K. Shivamoggi

    Comments

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    Abstract

    Hall magnetohydrodynamics (MHD) near a two-dimensional (2D) X-type magnetic neutral line is considered. The Hall effects are shown to be able to sustain the hyperbolicity of the magneticfield (and hence a more open X-point configuration) near the neutral line in the steady state. This result is predicated on considering the steady Hall MHD state as the temporal asymptotic limit of the corresponding time-dependent problem. For the time-dependent Hall MHD problem, the Hall effects are shown to have a negligible impact on the current-sheet formation process near the X-type magnetic neutral line at short times but, subsequently, to quench the finite-time singularity exhibited in ideal MHD and, hence to prevent the plasma collapse, in consistency with the sustenance of the hyperbolicity of the magneticfield in the corresponding steady problem. Copyright (C) EPLA, 2009

    Journal Title

    Epl

    Volume

    85

    Issue/Number

    2

    Publication Date

    1-1-2009

    Document Type

    Article

    WOS Identifier

    WOS:000263692900017

    ISSN

    0295-5075

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