Parametric interaction of kinetic Alfvén waves with convective cells

Details Parametric interaction of kinetic Alfvén waves with convective cells Parametric interaction of kinetic Alfvén waves with convective cells

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jgra..10903305p&link_type=abstract

Journal of Geophysical Research, Volume 109, Issue A3, CiteID A03305

Physics

Plasma Physics

7

Magnetospheric Physics: Magnetosphere/Ionosphere Interactions, Magnetospheric Physics: Plasma Convection, Space Plasma Physics: Wave/Wave Interactions, Space Plasma Physics: Turbulence

Scientific paper

The theory of parametric interaction of kinetic Alfvén waves (KAWs) with convective cells in finite β plasmas is reconsidered. We use nonlinear equations that account for nonzero electron temperature effects. With the help of a standard multiscale expansion, we then derive a general equation for the electrostatic and magnetostatic convective cells. It is found that the electrostatic convective cells represent vortex plasma motions (VPM) with very large impedance ratio. They are associated with the large-scale part of the dispersion relation. On the other hand, the short-scale convective cells correspond to filamentary field-aligned current (FAC) structures or magnetostatic modes. A close inspection of our new dispersion relation shows that the electrostatic convective cells as well as the magnetostatic modes do not grow when the Alfvén waves are in the kinetic regime, i.e., in finite β plasmas. The relevance of our theory to satellite observations is stressed.

Affiliated with

Also associated with

No associations

Rating

Parametric interaction of kinetic Alfvén waves with convective cells 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 Parametric interaction of kinetic Alfvén waves with convective cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parametric interaction of kinetic Alfvén waves with convective cells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1135025