2D PIC simulation on microinstabilities in the foot of high Mach number quasi-perpendicular shocks

Details 2D PIC simulation on microinstabilities in the foot of high Mach number quasi-perpendicular shocks 2D PIC simulation on microinstabilities in the foot of high Mach number quasi-perpendicular shocks

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh52a..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SH52A-05

Astronomy and Astrophysics

Astrophysics

7514 Energetic Particles (2114), 7846 Plasma Energization, 7851 Shock Waves (4455), 7867 Wave/Particle Interactions (2483, 6984), 7868 Wave/Wave Interactions

Scientific paper

High Mach number shocks in space and astrophysical plasmas have been extensively studied, both observationally and theoretically, since it is a mine of various kinds of wave activities and mechanisms of particle accleration/heating. In particular, recent full particle simulation studies revealed that a variety of microinstabilities, for instance the Buneman instability, the electron cyclotron drift instability, the modified two-stream instability, etc., are generated in the foot of low beta supercritical quasi-perpendicular shocks. Since each instability has different propagation angle with respect to the ambient magnetic field, multi-dimensionality is important to discuss all instabilies simultaneously. In this study, a 2D PIC (particle-in-cell) simulation with periodic boundary conditions in both directions is performed as a proxy for the foot region which includes incoming and reflected ions, and electrons. The simulation shows that six types of different instabilities are excited in a time period shorter than ion gyro period of the reflected ions. The most dominant instability is the modified two-stream instability, which leads to strong electron heating through a so-called two step instability. Influences of the modified two-stream instability to shock stationarity are also discussed.

Affiliated with

Also associated with

No associations

Rating

2D PIC simulation on microinstabilities in the foot of high Mach number quasi-perpendicular 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 2D PIC simulation on microinstabilities in the foot of high Mach number quasi-perpendicular shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 2D PIC simulation on microinstabilities in the foot of high Mach number quasi-perpendicular shocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-759343