Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.135..211b&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 135, no. 2, July 1987, p. 211-218. Research supported by the Alexander von
Astronomy and Astrophysics
Astrophysics
6
Electric Current, Electromagnetic Radiation, Electron Plasma, Electron-Positron Plasmas, Plasma-Electromagnetic Interaction, Pulsars, Differential Equations, Dipoles, Electromagnetic Wave Transmission, Magnetohydrodynamic Waves, Nonlinear Equations, Pulsar Magnetospheres, Vortices
Scientific paper
A set of coupled nonlinear differential equations which govern the dynamics of finite amplitude electromagnetic waves in the presence of an external current gradient in a magnetized electron-positron plasma has been derived. It is shown that the current gradient can make shear Alfvén-like waves unstable. A quasi-stationary solution of the mode-coupling equations is the well-localized dipole vortex. Application of the results to plasma transport in the pulsar magnetosphere is briefly discussed.
Bharuthram R.
Kant Shukla Padma
Pavlenko V. N.
Yu M. Y.
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