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

P. K. Shukla, A.A. Mamun, B. Eliasson

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

We derive a multi-dimensional nonlinear equation for electron-acoustic waves in magnetized plasmas composed of stationary ions, magnetized cold electrons with a significant fraction of electron beams, and magnetized hot electrons which have a non-isothermal vortex-like distribution. We find three-dimensional (3D) electron-acoustic solitary waves which have a stronger nonlinearity (in comparison with that associated with the traditional harmonic generation) due to the trapping of hot electrons in the localized electron-acoustic wave potential. The relevance of our investigation to nonlinear structures (e.g., the bipolar parallel electric fields) in the Earth's magnetosphere is discussed.
LanguageEnglish
Article numberL07803
Number of pages4
JournalGeophysical Research Letters
Volume31
Issue number7
DOIs
Publication statusPublished - 16 Apr 2004

Fingerprint

space plasmas
solitary wave
acoustic wave
vortex
solitary waves
vortices
plasma
electron
acoustics
hot electrons
electrons
Earth magnetosphere
nonlinear equations
harmonic generations
trapping
nonlinearity
electron beams
electric fields
magnetosphere
electric field

Keywords

  • electron acoustic waves
  • solitary waves
  • magnetized space plasma

Cite this

@article{07e2bf7c13694b75b6a3363129f975cf,
title = "3D electron-acoustic solitary waves introduced by phase space electron vortices in magnetized space plasmas",
abstract = "We derive a multi-dimensional nonlinear equation for electron-acoustic waves in magnetized plasmas composed of stationary ions, magnetized cold electrons with a significant fraction of electron beams, and magnetized hot electrons which have a non-isothermal vortex-like distribution. We find three-dimensional (3D) electron-acoustic solitary waves which have a stronger nonlinearity (in comparison with that associated with the traditional harmonic generation) due to the trapping of hot electrons in the localized electron-acoustic wave potential. The relevance of our investigation to nonlinear structures (e.g., the bipolar parallel electric fields) in the Earth's magnetosphere is discussed.",
keywords = "electron acoustic waves, solitary waves, magnetized space plasma",
author = "Shukla, {P. K.} and A.A. Mamun and B. Eliasson",
year = "2004",
month = "4",
day = "16",
doi = "10.1029/2004GL019533",
language = "English",
volume = "31",
journal = "Geophysical Research Letters",
issn = "0094-8276",
number = "7",

}

3D electron-acoustic solitary waves introduced by phase space electron vortices in magnetized space plasmas. / Shukla, P. K.; Mamun, A.A.; Eliasson, B.

In: Geophysical Research Letters, Vol. 31, No. 7, L07803, 16.04.2004.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 3D electron-acoustic solitary waves introduced by phase space electron vortices in magnetized space plasmas

AU - Shukla, P. K.

AU - Mamun, A.A.

AU - Eliasson, B.

PY - 2004/4/16

Y1 - 2004/4/16

N2 - We derive a multi-dimensional nonlinear equation for electron-acoustic waves in magnetized plasmas composed of stationary ions, magnetized cold electrons with a significant fraction of electron beams, and magnetized hot electrons which have a non-isothermal vortex-like distribution. We find three-dimensional (3D) electron-acoustic solitary waves which have a stronger nonlinearity (in comparison with that associated with the traditional harmonic generation) due to the trapping of hot electrons in the localized electron-acoustic wave potential. The relevance of our investigation to nonlinear structures (e.g., the bipolar parallel electric fields) in the Earth's magnetosphere is discussed.

AB - We derive a multi-dimensional nonlinear equation for electron-acoustic waves in magnetized plasmas composed of stationary ions, magnetized cold electrons with a significant fraction of electron beams, and magnetized hot electrons which have a non-isothermal vortex-like distribution. We find three-dimensional (3D) electron-acoustic solitary waves which have a stronger nonlinearity (in comparison with that associated with the traditional harmonic generation) due to the trapping of hot electrons in the localized electron-acoustic wave potential. The relevance of our investigation to nonlinear structures (e.g., the bipolar parallel electric fields) in the Earth's magnetosphere is discussed.

KW - electron acoustic waves

KW - solitary waves

KW - magnetized space plasma

UR - http://onlinelibrary.wiley.com/wol1/doi/10.1029/2004GL019533/abstract

U2 - 10.1029/2004GL019533

DO - 10.1029/2004GL019533

M3 - Article

VL - 31

JO - Geophysical Research Letters

T2 - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 7

M1 - L07803

ER -