Dromion solutions for an electron acoustic wave and its application to space observations |
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| Authors: | S S Ghosh A Sen G S Lakhina |
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| Affiliation: | (1) Institute for Plasma Research, 382 428 Bhat, Gandhinagar, India;(2) Indian Institute of Geomagnetism, 400 005 Colaba, Mumbai, India |
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| Abstract: | The nonlinear evolution of an electron acoustic wave is shown to obey the Davey-Stewartson I equation which admits so called dromion solutions. The importance of these two dimensional localized solutions for recent satellite observations of wave structures in the day side polar cap regions is discussed and the parameter regimes for their existence is delineated. |
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| Keywords: | Davey-Stewartson equation electron acoustic wave space plasma |
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