Response of energetic particles to magnetospheric ultra-low-frequency waves.
Abstract
Ultra-low-frequency (ULF) waves in the space physics context are the lowest-frequency plasma waves propagating in the Earth's magnetosphere. Although the propagation of the waves is explained in magnetohydrodynamic (MHD) theory, excitation of the waves involves not only MHD but also kinetic processes. The author describes how in situ magnetic field and particle measurements can be used to distinguish the basic properties of ULF waves, including the azimuthal wave number of the standing wave structure and the propagation direction.
- Publication:
-
Johns Hopkins APL Technical Digest
- Pub Date:
- December 1990
- Bibcode:
- 1990JHATD..11..255T
- Keywords:
-
- Ampte (Satellites);
- Earth Magnetosphere;
- Energetic Particles;
- Magnetohydrodynamic Waves;
- Magnetospheric Instability;
- Wave Propagation;
- Kinetics;
- Magnetic Fields;
- Magnetotails;
- Plasma Waves;
- Power Spectra;
- Standing Waves;
- Geophysics;
- Earth Magnetosphere: Plasma Waves