Nonlinear Alfven waves in inhomogeneous plasmas

Details Nonlinear Alfven waves in inhomogeneous plasmas Nonlinear Alfven waves in inhomogeneous plasmas

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18..809b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, May 1991, p. 809-812. Research supported by U.S. National Research Counc

Statistics

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13

Magnetohydrodynamic Waves, Nonuniform Plasmas, Space Plasmas, Wave Propagation, Nonlinear Evolution Equations, Schroedinger Equation

Scientific paper

Nonlinear Alfven waves, in inhomogeneous plasmas, are shown to be governed by the Modified Derivative Nonlinear Schroedinger equation. The inhomogeneity leads to acceleration (deceleration) of the Alfven solitons depending upon plasma beta (kinetic pressure/magnetic pressure) and on density gradients vis-a-vis direction of wave propagation. Potential applications of the model to space and astrophysical plasmas are pointed out.

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