Nonlinear parametric instability and millisecond solar radio spikes

Details Nonlinear parametric instability and millisecond solar radio spikes Nonlinear parametric instability and millisecond solar radio spikes

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..135..393w&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 135, Oct. 1991, p. 393-405. Research supported by NNSFC and Research Association of Plasma

Physics

Plasma Physics

10

Decimeter Waves, Magnetohydrodynamic Stability, Plasma Waves, Solar Corona, Solar Radio Emission, Cyclotron Radiation, Nonlinear Equations, Wave Propagation

Scientific paper

A model of nonlinear parametric instability (NLPI) modulation is suggested to explain the millisecond spikes in solar decimetric radio emission. The radio emission energy will periodically transfer to two other waves, and the intensity of the radio emission will be modified by NLPI processes in the corona, when the matching conditions of three-wave coupling are satisfied. This model can simultaneously explain the duration of spikes, why the millisecond spikes have not been observed in other solar radioemission, and the relation between the duration of the spikes and the intensity and the frequency of the radio emission as well.

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