Nonlinear electrostatic instabilities in the solar wind
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Abstract
It is well known that nonlinear electrostatic instabilities can be triggered in a plasma with streaming ion species in the presence of finite-amplitude Alfvén cyclotron waves. The instability occurs when the phase velocity of linear ion-acoustic waves propagating forward and backward relative to the supporting ion species become equal owing to the presence of the finite-amplitude wave. On the other hand, it has been shown recently that nonlinear ion-acoustic-like instabilities can also occur when the phase velocity of ion-acoustic waves propagating forward relative to the supporting ion species become equal to the phase velocity of ion-acoustic waves propagating backward relative to another supporting ion species. This can occur in a system with one streaming ion species relative to the background plasma and, in a completely different regime, when there is more than one drifting ion species. These instabilities may play a role in the evolution of the fast solar wind. Copyright 2009 by
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Artículo de publicación SCOPUS
Identifier
URI: https://repositorio.uchile.cl/handle/2250/161747
DOI: 10.1029/2008JA013818
ISSN: 21699402
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Journal of Geophysical Research: Space Physics, Volumen 114, Issue 3, 2018,
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