Eigen modes of a hot plasma discontinuity in magnetosphere

It is shown that the surface with finite width between two regions of a plasma medium having different Alfven velocity can sustain a discrete set of hydromagnetic waves. One set of eigenvalues depends upon the beta (ratio of the kinetic pressure to the magnetic pressure) value of the 'surface&#...

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Bibliographic Details
Published in:Indian journal of radio & space physics 1992-12, Vol.21 (6), p.362-365
Main Author: Roy, Manashi
Format: Article
Language:English
Online Access:Get full text
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Summary:It is shown that the surface with finite width between two regions of a plasma medium having different Alfven velocity can sustain a discrete set of hydromagnetic waves. One set of eigenvalues depends upon the beta (ratio of the kinetic pressure to the magnetic pressure) value of the 'surface' region and is weakly dispersive. The other set is similar to the familiar fast mode and is controlled by the width of the hot surface. The latter mode, therefore, has a much higher frequency than the weakly dispersive mode. (Author (revised))
ISSN:0367-8393