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AGU: Journal of Geophysical Research, Space Physics

 

Keywords

  • electrostatic structures
  • MHD waves
  • solar wind plasma
  • wave interactions

Index Terms

  • Interplanetary Physics: MHD waves and turbulence
  • Interplanetary Physics: Solar wind plasma
  • Space Plasma Physics: Electrostatic structures
  • Space Plasma Physics: Kinetic and MHD theory
  • Space Plasma Physics: Wave/wave interactions
Abstract
Cited By (5)
 

Abstract

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 111, A12111, 9 PP., 2006
doi:10.1029/2006JA012053

Ion acoustic-like waves triggered by nonlinear circularly polarized waves in the presence of an alpha particle beam

L. Gomberoff

Departamento de Fisica, Universidad de Chile, Santiago, Chile

We consider a fast solar wind-type plasma consisting of electrons, a protons background, and a much more tenuous alpha particle beam. It is shown that such system is unstable against ion acoustic-like waves triggered by finite-amplitude left-hand polarized waves propagating in the direction of the interplanetary magnetic field. The ion acoustic-like waves have similar properties to those found in a plasma with a much denser proton beam (Gomberoff, 2006b). Although the alpha particle beam is much more tenuous than the proton beam, the system is equally able to trigger ion acoustic-like waves. Therefore we believe that this effect should be taken into account in the evolution of the fast solar wind.

Received 1 September 2006; accepted 3 October 2006; published 28 December 2006.

Citation: Gomberoff, L. (2006), Ion acoustic-like waves triggered by nonlinear circularly polarized waves in the presence of an alpha particle beam, J. Geophys. Res., 111, A12111, doi:10.1029/2006JA012053.

Cited By

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