Langmuir Turbulence and Solar Radio Bursts |
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Authors: | FB Rizzato AC-L Chian MV Alves R Erichsen SR Lopes GI de Oliveira R Pakter EL Rempel |
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Institution: | (1) Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051;(2) World Institute for Space Environment Research (WISER), NITP, USA |
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Abstract: | Langmuir waves and turbulence resulting from an electron beam-plasma instability play a fundamental role in the generation
of solar radio bursts. We report recent theoretical advances in nonlinear dynamics of Langmuir waves. First, starting from
the generalized Zakharov equations, we study the parametric excitation of solar radio bursts at the fundamental plasma frequency
driven by a pair of oppositely propagating Langmuir waves with different wave amplitudes. Next, we briefly discuss the emergence
of chaos in the Zakharov equations. We point out that chaos can lead to turbulence in the source regions of solar radio emissions.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | chaos instabilities radio radiation Sun turbulence |
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