Consequences of nongyrotropy in magnetohydrodynamics

T. Hada, F. Jamitzky, M. Scholer

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    Abstract

    It is assumed in the magnetohydrodynamic set of equations that a plasma is both isotropic and gyrotropic at any instant of time. However, this cannot be always justified for applications in space plasmas which are essentially collisionless. By introducing two relaxation time scales, one for isotropization and another for gyrotropization, we propose a model which describes evolution of the field and the plasma variables, including all the pressure tensor elements. We discuss briefly the linear wave dispersion relation of the system, and then attempt to apply the model to the magnetic reconnection.

    Original languageEnglish
    Pages (from-to)67-72
    Number of pages6
    JournalAdvances in Space Research
    Volume24
    Issue number1
    DOIs
    Publication statusPublished - Jan 1 1999

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    All Science Journal Classification (ASJC) codes

    • Aerospace Engineering
    • Astronomy and Astrophysics
    • Geophysics
    • Atmospheric Science
    • Space and Planetary Science
    • Earth and Planetary Sciences(all)

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