Physics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..697l&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 9, p. 697-717
Physics
41
Atmospheric Effects, Atmospheric Models, Ionospheres, Magnetohydrodynamic Waves, Magnetospheres, Standing Waves, Transverse Waves, Azimuth, Eigenvalues, Magnetic Fields, Oscillators, Symmetry, Theorems
Scientific paper
For a model of an axially symmetric magnetosphere we have constructed a theory of standing Alfven waves with large azimuthal wavenumbers, m much greater than 1. It is supposed that the source for such waves can be provided by extraneous currents in the ionospheric E-layer. A monochromatic source excites an oscillation of the poliodal type on the magnetic shell, having an eigenfrequency of poloidal oscillation that coincides with the source frequency. This wave, while travelling across the magnetic shells, changes from the poloidal into the toroidal wave. On the magnetic shell, whose frequency of toroidal eigenoscillations coincides with the frequency of the wave concerned, it is totally absorbed due to energy dissipation in the ionosphere.
Leonovich Anatoly S.
Mazur Vitalii A.
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