Ion-Acoustic Instabilities in the Solar Wind

Details Ion-Acoustic Instabilities in the Solar Wind Ion-Acoustic Instabilities in the Solar Wind

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh31a1175g&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH31A-1175

Astronomy and Astrophysics

Astrophysics

7500 Solar Physics, Astrophysics, And Astronomy, 7815 Electrostatic Structures, 7839 Nonlinear Phenomena, 7868 Wave/Wave Interactions, 6984 Waves In Plasma

Scientific paper

It has been shown that ion-acoustic waves can be estabilized by finite amplitude left-hand polarized waves propagating in the direction of the external magnetic field [Gomberoff et al., 2004, J. Geophys. Res. 10(A0718),10.109/20004JA010466]. This result was shown to apply in plasma systems composed of electrons, protons and a proton beam. Later on, it was shown that the same instability is possible even in the absence of the proton beam [Gomberoff et al., 2004b J. Res. Lett. (submitted)]. It is shown here that the instability can actually be triggered quite generall by circularly polarized finite amplitude waves propagating either forward or backward relative to the external field. The instability occurs when the amplitude of the finite amplitude wave is larger than a threshold value. These waves are shown to have the properties of the ion-acoustic waves observed in the solar wind: (a) they do not seem to be Landau damped for proton temperatures larger that the electron temperatures, Tp ≥ Te, (b) they are more likely to occur closer to the Sun, and (c) the may exist independently of the proton beam velocity.

Affiliated with

Also associated with

No associations

Rating

Ion-Acoustic Instabilities in the Solar Wind does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ion-Acoustic Instabilities in the Solar Wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion-Acoustic Instabilities in the Solar Wind will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1461680