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A model of ultra-fast fine structures of microwave bursts

✍ Scribed by Ren-Yang Zhao; Jian-Kui Shi

Publisher
Springer
Year
1986
Tongue
English
Weight
334 KB
Volume
104
Category
Article
ISSN
0038-0938

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✦ Synopsis

A model is presented using the electron cyclotron maser instability driven by a loss-cone distribution (taking account of the relativistic effects for electron cyclotron frequency and electron velocity as well as Landau damping and cyclotron damping) to excite the UFFS (Ultra-Fast Fine Structures) of microwave bursts and adopting a nonlinear density wave as a trigger mechanism to explain the millisecond time structure of the UFFS.

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

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We present a discussion of the gradual burst event on May 13, 1985 which is based on observations of the RATAN-600 telescope at ten fixed frequencies in the range between 37.5 and 0.95 GHz (0.8 and 31.6 cm wavelength) and on time profiles of patrol observations of the Observatory for Solar Radio Ast