Abstract
Nonlinear propagation of ion-acoustic waves in self-gravitating multicomponent dusty plasma consisting of positive ions, non-isothermal two-temperature electrons and negatively charged dust particles with fluctuating charges and drifting ions has been studied using the reductive perturbation method. It has been shown that nonlinear propagation of ion-acoustic waves in gravitating dusty plasma is described by an uncoupled third order partial differential equation which is a modified form of Korteweg–deVries equation, in contraries to the coupled nonlinear equations obtained by earlier authors. Quasi-soliton solution for the ion-acoustic solitary wave has been obtained from this uncoupled nonlinear equation. Effects of non-isothermal two-temperature electrons, gravity, dust charge fluctuation and drift motion of ions on the ion-acoustic solitary waves have been discussed.
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Acknowledgments
Indrani Paul would like to thank Prof. Basudev Ghosh, Department of Physics, Jadavpur University, for his constant encouragement in preparation of the paper.
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Paul, S.N., Chatterjee, A. & Paul, I. Nonlinear propagation of ion-acoustic waves in self-gravitating dusty plasma consisting of non-isothermal two-temperature electrons. Indian J Phys 91, 101–107 (2017). https://doi.org/10.1007/s12648-015-0826-1
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DOI: https://doi.org/10.1007/s12648-015-0826-1
Keywords
- Ion-acoustic waves
- Gravitating plasma
- Non-isothermal two-temperature electrons
- Modified Korteweg–deVries equation
- Quasi-soliton