Effects of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks

Details Effects of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks Effects of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jgra..11205108y&link_type=abstract

Journal of Geophysical Research, Volume 112, Issue A5, CiteID A05108

Physics

Plasma Physics

3

Space Plasma Physics: Charged Particle Motion And Acceleration, Space Plasma Physics: Shock Waves (4455), Space Plasma Physics: Particle Acceleration, Space Plasma Physics: Plasma Energization, Interplanetary Physics: Planetary Bow Shocks

Scientific paper

We use test particle simulations to investigate the effect of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks as functions of angle $\theta$ bn between upstream magnetic field and shock normal. The main results are: (1) The development of overshoots leads to obvious loss cone structures in upstream electron distributions, increases the reflection of upstream electrons, and reduces the leakage of downstream electrons. An electron beam associated with the escape cutoff effect exists in upstream reduced electron distribution functions for large $\theta$ bn shocks. (2) Overshoots significantly affect the downstream electron distribution, too, preventing the upstream and downstream electrons with high perpendicular speeds from crossing the shock and leading to a loss cone and beam features rather than arc features in downstream distributions. (3) The shock-reflected electrons conserve their magnetic moments on average. Demagnetized electrons are mainly those transmitted, and most are overadiabatic electrons. The assumption of conservation of magnetic moment is an increasingly good approximation as $\theta$ bn increases. (4) The major temporal changes in ramp overshoot structure expected from shock nonstationarity should lead to significant changes in electron distributions and associated waves upstream and downstream.

Affiliated with

Also associated with

No associations

Rating

Effects of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks 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 Effects of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of overshoots on electron distributions upstream and downstream of quasi-perpendicular collisionless shocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-770442