Physics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..104...93w&link_type=abstract
(CNR, Workshop on Radio Continua during Solar Flares, Duino, Italy, May 27-31, 1985) Solar Physics (ISSN 0038-0938), vol. 104, M
Physics
28
Cyclotron Radiation, Interstellar Masers, Laser Stability, Plasma Density, Plasma Temperature, Solar Radio Bursts, Stellar Flares, Circular Polarization, Electron Distribution, Electron Energy, Periodic Variations
Scientific paper
Very bright and highly circularly polarized radio bursts from the Sun, the planets, flare stars, and close binary stars are attributed to the electron-cyclotron maser instability. The mode and frequency of the dominant radiation from the maser instability is shown to be dependent on the plasma temperature and the ratio ωp/Ωe of the plasma frequency to the electron-cyclotron frequency. For the emission from the Sun ωp/Ωe is probably greater than 0.3 and for 0.3 < ωp/Ωe < √2 the emission can be either in the x-mode at the second harmonic or the o-and/or z-modes at the fundamental. For higher ωp/Ωe, the emission moves to higher harmonics of Ωe with the emission being predominately in the z-mode when ωp/Ωe ⪆ √3.
Dulk George A.
Winglee Robert M.
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