Compressibility of the poloidal mode

Details Compressibility of the poloidal mode Compressibility of the poloidal mode

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.4755d&link_type=abstract

Journal of Geophysical Research, Volume 103, Issue A3, p. 4755-4760

Physics

Plasma Physics

3

Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Mhd Waves And Instabilities, Space Plasma Physics: Charged Particle Motion And Acceleration, Space Plasma Physics: Kinetic And Mhd Theory

Scientific paper

The poloidal mode is a coupled Alfvén and fast magnetosonic mode which has Alfvén-like dispersion in the limit of large azimuthal wave number. In this brief report we discuss the assumption of incompressibility. From the point of view of ideal MHD, incompressibility is, in general, a bad assumption for the poloidal mode when the magnetic field is curved. Assuming an adiabatic equation of state for the pressure p and that it is acceptable to drop the contribution of v∥ (a low beta assumption), an approximate condition for the incompressibility assumption to be valid in the magnetosphere is that the equilibrium pressure scale length Lp<E×B drift.

Affiliated with

Also associated with

No associations

Rating

Compressibility of the poloidal mode 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 Compressibility of the poloidal mode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compressibility of the poloidal mode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-954253