Nonlinear generation of type III solar radio bursts by the hybrid modulational instability
نویسنده
چکیده
An improvedmodel of the fundamental plasma emission of type III solar radio bursts is presented. It is shown that nonlinear conversion of a traveling Langmuir pump wave into an electromagnetic wave can occur via either convective or absolute hybrid modulational instabilities, resulting from the coupling of two wave triplets, with the Langmuir pump wave and ion-acoustic daughter wave common to both wave triplets. The properties of these four-wave hybrid modulational instabilities are studied using the observed interplanetary parameters.
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