Electron-cyclotron maser emission from the sun and stars: Variations with plasma temperature and density

✍ Scribed by R. M. Winglee; G. A. Dulk

• Publisher: Springer
• Year: 1986
• Tongue: English
• Weight: 235 KB
• Volume: 104
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00159949

✦ Synopsis

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 %/Oe of the plasma frequency to the electron-cyclotron frequency. For the emission from the Sun %/12 e is probably greater than 0.3 and for 0.3 < %/12 e < ,~ the emission can be either in the x-mode at the second harmonic or in the o-and/or z-modes at the fundamental. For higher COp~f2 e , the emission moves to higher harmonics of 12e with the emission being predominately in the z-mode when %/12~ > ~f3.

* Proceedings of the Workshop on RadioContinua during Solar Flares, held at Duino (Trieste), Italy, 27-31 May, 1985.