Electromagnetic Ion/Beam Instabilities In The Fast Solar Wind: Proton Core Temperature Anisotropy Effects On The Relative Drift Speed And Ion Heating

Details Electromagnetic Ion/Beam Instabilities In The Fast Solar Wind: Proton Core Temperature Anisotropy Effects On The Relative Drift Speed And Ion Heating Electromagnetic Ion/Beam Instabilities In The Fast Solar Wind: Proton Core Temperature Anisotropy Effects On The Relative Drift Speed And Ion Heating

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..679..522a&link_type=abstract

SOLAR WIND TEN: Proceedings of the Tenth International Solar Wind Conference. AIP Conference Proceedings, Volume 679, pp. 522-5

Physics

Particle Emission, Solar Wind, Solar Wind Plasma, Sources Of Solar Wind

Scientific paper

Ion velocity distributions in the fast solar wind are usually characterized by nonthermal features such as multicomponent ions, temperature anisotropies and average relative drifts. These nonthermal features lead to the growth of several electromagnetic instabilities. Here, two-dimensional hybrid simulations are used to study these instabilities in a homogeneous, magnetized collisionless plasma model. We show that for conditions typical of the fast solar wind the proton core temperature anisotropy plays a significant role in modifying the wave-particle scattering of each proton component as compared to the isotropic cases. As a consequence, the scattering reduces both the heating and anisotropy enhancement of the proton beam and decreases the relative proton/ion flow speed below the corresponding isotropic instability thresholds in agreement with recent observations and with our previous one-dimensional study. Our results are consistent with recent satellite observations and provide support to the physical scenario in which core temperature anisotropies play a regulating effect on the instability thresholds.

Affiliated with

Also associated with

No associations

Rating

Electromagnetic Ion/Beam Instabilities In The Fast Solar Wind: Proton Core Temperature Anisotropy Effects On The Relative Drift Speed And Ion Heating 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 Electromagnetic Ion/Beam Instabilities In The Fast Solar Wind: Proton Core Temperature Anisotropy Effects On The Relative Drift Speed And Ion Heating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic Ion/Beam Instabilities In The Fast Solar Wind: Proton Core Temperature Anisotropy Effects On The Relative Drift Speed And Ion Heating will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1149482