Stochastic three-wave interaction in flaring solar loops

Details Stochastic three-wave interaction in flaring solar loops Stochastic three-wave interaction in flaring solar loops

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275..374v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 1, 1983, p. 374-390.

Astronomy and Astrophysics

Astrophysics

42

Coronal Loops, Microwave Emission, Plasma Dynamics, Wave Interaction, Coupled Modes, Electron Precipitation, Plasma Density, Plasma Temperature, Solar Radio Emission, Stochastic Processes

Scientific paper

A model is proposed for the dynamic structure of high-frequency microwave bursts. The dynamic component is attributed to beams of precipitating electrons which generate electrostatic waves in the upper hybrid branch. Coherent upconversion of the electrostatic waves to electromagnetic waves produces an intrinsically stochastic emission component which is superposed on the gyrosynchrotron continuum generated by stably trapped electron fluxes. The role of the density and temperature of the ambient plasma in the wave growth and the transition of the three wave upconversion to stochastic, despite the stationarity of the energy source, are discussed in detail. The model appears to reproduce the observational features for reasonable parameters of the solar flare plasma.

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