A theory of the terrestrial kilometric radiation.
Abstract
During magnetospheric substorms, electrons with energies of about 1 keV are injected from the plasma-sheet region into the auroral region. A fraction of these energetic electrons can precipitate into the upper atmosphere, and the rest are reflected because of the mirror effect of the convergent geomagnetic field. It is found that these reflected electrons can result in the amplification of electromagnetic waves via a relativistic normal cyclotron resonance. This process may explain the recently discovered terrestrial kilometric radiation.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1979
- DOI:
- 10.1086/157120
- Bibcode:
- 1979ApJ...230..621W
- Keywords:
-
- Atmospheric Radiation;
- Auroral Irradiation;
- Cyclotron Resonance;
- Long Wave Radiation;
- Low Frequencies;
- Magnetic Mirrors;
- Upper Atmosphere;
- Wave Amplification;
- Auroral Zones;
- Electromagnetic Radiation;
- Electron Energy;
- Electron Precipitation;
- Geomagnetism;
- Magnetic Effects;
- Magnetospheric Electron Density;
- Magnetospheric Instability;
- Plasmapause;
- Geophysics;
- Earth Magnetosphere:Radio Radiation