The instability of a stratified layer of rotating and conducting self-gravitating fluid

The instability of a horizontal rotating layer of a self-gravitating electrically conducting fluid has been studied to simultaneously include the effects of Hall currents and magnetic resistivity. The prevailing magnetic field is uniform and acts along the vertical direction, along which the fluid h...

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Bibliographic Details
Published in:Astrophysics and space science 1984-10, Vol.105 (2), p.287-294
Main Authors: BHATIA, P. K, SANKHLA, V. D
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Fundamental aspects of astrophysics
Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations
Magnetohydrodynamics and plasmas
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Summary:The instability of a horizontal rotating layer of a self-gravitating electrically conducting fluid has been studied to simultaneously include the effects of Hall currents and magnetic resistivity. The prevailing magnetic field is uniform and acts along the vertical direction, along which the fluid has a one-dimensional density gradient. The solution has been obtained by variational methods. The dispersion relation obtained has been solved numerically, and it is found that Hall currents as well as magnetic resistivity have a destabilizing influence. Coriolis forces, however, have a stabilizing influence.
ISSN:0004-640X
1572-946X
DOI:10.1007/BF00651081