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

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

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.105..287b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 105, no. 2, Oct. 1984, p. 287-294.

Astronomy and Astrophysics

Astrophysics

1

Magnetohydrodynamic Stability, Rotating Fluids, Stratified Flow, Dispersion, Hall Effect, Hydrodynamic Equations, Magnetic Properties, Variational Principles

Scientific paper

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.

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