Interaction of relativistic electrons with Alfven waves in the magnetosphere
Abstract
A theoretical analysis of the generation of Alfven waves by relativistic electrons in the magnetosphere is presented. The perturbed pressure and perturbed density of fast particles is calculated as a function of disturbances of electric and magnetic fields. A relativistic driftkinetic equation is solved for particles moving in an axisymmetric stationary and disturbed magnetic field of an Alfven wave and relativistic expressions for pressure and density are computed. Relativistic effects on two basic types of Alfven instability are examined: (1) electroncompressibility instability and (2) finitelongitudinalelectricfield instability.
 Publication:

Radiofizika
 Pub Date:
 1978
 Bibcode:
 1978RaF....21..253K
 Keywords:

 Electron Scattering;
 Magnetohydrodynamic Waves;
 Magnetospheric Instability;
 Particle Interactions;
 Relativistic Particles;
 Wave Excitation;
 Cold Plasmas;
 Compressibility Effects;
 Differential Equations;
 Longitudinal Waves;
 Magnetospheric Electron Density;
 Relativistic Effects;
 Geophysics