Polarization of Fundamental Type-Iii Radio Bursts
Abstract
The fundamental of type III bursts is only partially polarized, yet all theory for emission near the plasma frequency predicts pure o-mode emission. I argue depolarization is inherent in the burst itself. The o-mode radiation is intensely scattered and mode-converted when it temporarily falls behind its own source and finds itself in the medium that is already disturbed by the electron beam. In particular, mode conversion is very efficient and yet causes only modest angular scattering at the height were ω≃ωp + 0.5Ω.
- Publication:
-
Solar Physics
- Pub Date:
- January 1984
- DOI:
- 10.1007/BF00153791
- Bibcode:
- 1984SoPh...90..139W
- Keywords:
-
- Polarization Characteristics;
- Solar Corona;
- Type 3 Bursts;
- Beam Plasma Amplifiers;
- Electromagnetic Scattering;
- Electron Beams;
- Ion Acoustic Waves;
- Mode Transformers;
- Plasma Frequencies;
- Polarized Electromagnetic Radiation;
- Radio Wave Refraction;
- Solar Electrons;
- Solar Physics;
- Radiation;
- Electron Beam;
- Refraction;
- Large Fraction;
- Plasma Frequency