Abstract
Microinstabilities excited in the foot of a supercritical perpendicular shock wave are investigated. A two-dimensional full particle simulation with periodic boundary conditions in both directions using the physical ion to electron mass ratio is performed as a proxy for the foot region where incoming and specularly reflected ions overlap. The simulation shows that six types of different instabilities are excited in a time period shorter than ion gyroperiod of the reflected ions. The most dominant instability is the modified two-stream instability, which leads to strong parallel electron heating through a so-called two step instability and to ion phase space holes.
Original language | English |
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Article number | A06104 |
Journal | Journal of Geophysical Research: Space Physics |
Volume | 111 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 1 2006 |
All Science Journal Classification (ASJC) codes
- Geophysics
- Space and Planetary Science