Physics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...62..375t&link_type=abstract
Solar Physics, vol. 62, June 1979, p. 375-382.
Physics
6
Magnetohydrodynamic Turbulence, Plasma Waves, Solar Corona, Type 3 Bursts, Coalescing, Ion Acoustic Waves, Maxwell-Boltzmann Density Function, Solar Wind
Scientific paper
On the basis of the previous numerical simulations, a new mechanism for the emission of the fundamental radio waves of solar radio type III bursts is presented. This hypothesis is to attribute the fundamental radio emission to the coalescence of the plasma waves with the low frequency turbulence, whistler or ion acoustic waves, pre-existing on the way of the electron beam which excite the plasma waves.
It is estimated that ion acoustic waves could be occasionally unstable in the solar corona due to that drifting bi-Maxwellian distribution of electrons as observed in the solar wind, which is probably caused by collision-less heat conduction.
It is also suggested that the reduced damping of the ion acoustic waves in such a distorted electron distribution in the corona may decrease the threshold electric current to cause the anomalous resistivity to be the onset of the solar flares.
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