Coupled whistler and ion-acoustic mode propagation in two-electron-temperature plasmas |
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| Institution: | 1. Theoretical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India;2. Institut für Theoretische Physik - IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany;1. Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA;2. School of the Environment, Washington State University, Pullman, WA, USA |
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| Abstract: | The nonlinear coupling between whistler and ion-acoustic modes in a plasma having bi-Maxwellian distributed electrons is considered. For stationary propagation, the coupled waves lead to a novel nonlinear structure which has a triple-hump profile for the whistler field intensity. In the critical parameter regime (Δ = 3), only supersonic propagation of the coupled modes is allowed. In other regimes, three integrable cases of the coupled mode propagation have been identified. |
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