Global simulation of magnetosonic wave instability in the storm time magnetosphere

Details Global simulation of magnetosonic wave instability in the storm time magnetosphere Global simulation of magnetosonic wave instability in the storm time magnetosphere

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jgra..11511222c&link_type=abstract

Journal of Geophysical Research, Volume 115, Issue A11, CiteID A11222

Physics

Plasma Physics

4

Magnetospheric Physics: Plasma Waves And Instabilities (2471), Magnetospheric Physics: Polar Cap Phenomena, Magnetospheric Physics: Ring Current, Space Plasma Physics: Wave/Particle Interactions (2483, 6984)

Scientific paper

Coupling between the Rice Convection Model and Ring Current-Atmospheric Interactions Model codes is used to simulate the dynamical evolution of ring current ion phase space density and the thermal electron density distribution for the 22 April 2001 storm. The simulation demonstrates that proton ring distributions (df$\perp$/dv$\perp$ > 0) develop over a broad spatial region during the storm main phase, leading to the instability of equatorial magnetosonic waves. Calculations of the convective growth rate of magnetosonic waves for multiples of the proton gyrofrequency from 2 to 42 are performed globally. We find that the ratio between the perpendicular ring velocity and the equatorial Alfven speed determines the frequency range of unstable magnetosonic waves. Low harmonic waves (ω < 10 ΩH+) tend to be excited in the high-density nightside plasmasphere and within the duskside plume, whereas higher-frequency waves (ω > 20 ΩH+) are excited over a broad spatial region of low density outside the morningside plasmasphere.

Affiliated with

Also associated with

No associations

Rating

Global simulation of magnetosonic wave instability in the storm time magnetosphere 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 Global simulation of magnetosonic wave instability in the storm time magnetosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Global simulation of magnetosonic wave instability in the storm time magnetosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1488839