Nonlinear electrostatic instabilities in the solar wind
Author
dc.contributor.author
Gomberoff, L.
Admission date
dc.date.accessioned
2019-01-29T15:34:51Z
Available date
dc.date.available
2019-01-29T15:34:51Z
Publication date
dc.date.issued
2009
Cita de ítem
dc.identifier.citation
Journal of Geophysical Research: Space Physics, Volumen 114, Issue 3, 2018,
Identifier
dc.identifier.issn
21699402
Identifier
dc.identifier.other
10.1029/2008JA013818
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/161747
Abstract
dc.description.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