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Dromion Solutions for Nonlinear Electron Acoustic Waves in Space Plasmas : Volume 9, Issue 5/6 (30/11/-0001)

By Ghosh, S. S.

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Book Id: WPLBN0004020048
Format Type: PDF Article :
File Size: Pages 13
Reproduction Date: 2015

Title: Dromion Solutions for Nonlinear Electron Acoustic Waves in Space Plasmas : Volume 9, Issue 5/6 (30/11/-0001)  
Author: Ghosh, S. S.
Volume: Vol. 9, Issue 5/6
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
-0001
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Lakhina, G. S., Sen, A., & Ghosh, S. S. (-0001). Dromion Solutions for Nonlinear Electron Acoustic Waves in Space Plasmas : Volume 9, Issue 5/6 (30/11/-0001). Retrieved from http://hawaiilibrary.net/


Description
Description: Indian Institute of Geomagnetism, Dr. Nanabhai Moos Marg, Colaba, Mumbai, 400 005, India. Recent high resolution measurements of POLAR and FAST satellites have revealed two-dimensional coherent structures in the polar cap boundary layer (PCBL) region. Since the ion temperature is often observed to be greater than the electron temperature in this region, electron acoustic waves can exist as a normal mode of the plasma system. It is shown that the nonlinear evolution of such waves can be modelled by the coupled Davey-Stewartson I equations. These equations, which are a generalization of the nonlinear Schrödinger equation to two dimensions, admit exponentially localized solutions called dromions. A detailed parametric characterization of the regions of existence of such solutions is presented in the context of the PCBL region.

Summary
Dromion solutions for nonlinear electron acoustic waves in space plasmas

 

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