scholarly journals 3D electron-acoustic solitary waves introduced by phase space electron vortices in magnetized space plasmas

2004 ◽  
Vol 31 (7) ◽  
pp. n/a-n/a ◽  
Author(s):  
P. K. Shukla ◽  
A. A. Mamun ◽  
B. Eliasson
Keyword(s):  
Phase Space ◽  
Solitary Waves ◽  
Space Plasmas ◽  
3D Electron ◽  
Electron Acoustic

scholarly journals Electrostatic Solitary Structures in Space Plasmas: Soliton Perspective

Plasma ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 681-731
Author(s):  
Gurbax Singh Lakhina ◽  
Satyavir Singh ◽  
Rajith Rubia ◽  
Selvaraj Devanandhan
Keyword(s):  
Phase Space ◽  
Energetic Electron ◽  
Theoretical Models ◽  
Double Layers ◽  
Space Plasmas ◽  
Electrostatic Waves ◽  
Lunar Wake ◽  
Bgk Modes ◽  
Theoretical Predictions ◽  
Electron Acoustic

Occurrence of electrostatic solitary waves (ESWs) is ubiquitous in space plasmas, e.g., solar wind, Lunar wake and the planetary magnetospheres. Several theoretical models have been proposed to interpret the observed characteristics of the ESWs. These models can broadly be put into two main categories, namely, Bernstein–Green–Kruskal (BGK) modes/phase space holes models, and ion- and electron- acoustic solitons models. There has been a tendency in the space community to favor the models based on BGK modes/phase space holes. Only recently, the potential of soliton models to explain the characteristics of ESWs is being realized. The idea of this review is to present current understanding of the ion- and electron-acoustic solitons and double layers models in multi-component space plasmas. In these models, all the plasma species are considered fluids except the energetic electron component, which is governed by either a kappa distribution or a Maxwellian distribution. Further, these models consider the nonlinear electrostatic waves propagating parallel to the ambient magnetic field. The relationship between the space observations of ESWs and theoretical models is highlighted. Some specific applications of ion- and electron-acoustic solitons/double layers will be discussed by comparing the theoretical predictions with the observations of ESWs in space plasmas. It is shown that the ion- and electron-acoustic solitons/double layers models provide a plausible interpretation for the ESWs observed in space plasmas.

Nonlinear electron-acoustic waves in a multi-species plasma

1980 ◽  
Vol 24 (1) ◽  
pp. 169-180 ◽  
Author(s):  
B. Buti
Keyword(s):  
Solitary Waves ◽  
Acoustic Waves ◽  
Large Amplitude ◽  
Space Plasmas ◽  
Strongly Nonlinear ◽  
Electron Acoustic Waves ◽  
Electron Acoustic ◽  
Ion Species

Propagation of electron-acoustic waves in a strongly nonlinear magnetoplasma with two ion species is investigated. The presence of the second ion component affects the dynamics of these solitary waves in a variety of ways. Besides solitons, supersonic holes (density depressions) are produced by sufficiently large- amplitude perturbations. Heavier and hotter ions are more favourable to the holes. Applications of the present investigations to space plasmas are pointed out.

scholarly journals On the three-dimensional configuration of electrostatic solitary waves

2004 ◽  
Vol 11 (3) ◽  
pp. 313-318 ◽  
Author(s):  
V. L. Krasovsky ◽  
H. Matsumoto ◽  
Y. Omura
Keyword(s):  
Phase Space ◽  
Dimensional Analysis ◽  
Solitary Waves ◽  
Electrostatic Potential ◽  
Three Dimensional ◽  
Space Plasmas ◽  
Electron Dynamics ◽  
One Dimensional ◽  
Spatial Configurations ◽  
Three Dimensional Configuration

Abstract. The simplest models of the electrostatic solitary waves observed by the Geotail spacecraft in the magnetosphere are developed proceeding from the concept of electron phase space holes. The technique to construct the models is based on an approximate quasi-one-dimensional description of the electron dynamics and three-dimensional analysis of the electrostatic structure of the localized wave perturbations. It is shown that the Vlasov-Poisson set of equations admits a wide diversity of model solutions of different geometry, including spatial configurations of the electrostatic potential similar to those revealed by Geotail and other spacecraft in space plasmas.

Exact electron-acoustic solitary waves

1980 ◽  
Vol 23 (2) ◽  
pp. 341-347 ◽  
Author(s):  
B. Buti ◽  
M. Mohan ◽  
P. K. Shukla
Keyword(s):  
Acoustic Wave ◽  
Solitary Waves ◽  
Careful Analysis ◽  
Nonlinear Propagation ◽  
Classical Particle ◽  
Space Plasmas ◽  
Energy Integral ◽  
Electron Acoustic Wave ◽  
Electron Acoustic

Nonlinear propagation of an electron-acoustic wave in a magnetoplasma is considered. Accounting for the exact electron and ion nonlinearities, we show that the equations governing the dynamics of these waves can be written in terms of the energy integral of a classical particle. A careful analysis of the potential reveals the existence of exact planar solitary waves. Application of our investigation to space plasmas is pointed out.

Small amplitude nonlinear electron acoustic solitary waves in weakly magnetized plasma

2013 ◽  
Vol 20 (1) ◽  
pp. 012113 ◽  
Author(s):  
Manjistha Dutta ◽  
Samiran Ghosh ◽  
Rajkumar Roychoudhury ◽  
Manoranjan Khan ◽  
Nikhil Chakrabarti
Keyword(s):  
Solitary Waves ◽  
Small Amplitude ◽  
Magnetized Plasma ◽  
Electron Acoustic
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