The Interaction of Alfvén Waves and Perpendicular Shocks

Details The Interaction of Alfvén Waves and Perpendicular Shocks The Interaction of Alfvén Waves and Perpendicular Shocks

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1039..321l&link_type=abstract

PARTICLE ACCELERATION AND TRANSPORT IN THE HELIOSPHERE AND BEYOND: 7th Annual International Astrophysics Conference. AIP Confer

Astronomy and Astrophysics

Astrophysics

Mhd Waves, Plasma Waves, Turbulence, Particle Acceleration, Planetary Bow Shocks, Interplanetary Shocks, Turbulence, Interplanetary Magnetic Fields, Particle Emission, Solar Wind, Coronal Mass Ejection

Scientific paper

Two-dimensional (2-D) hybrid simulations are performed to investigate the interaction between Alfvén waves and a perpendicular shock self-consistently. The shock is formed by reflecting particles at the right boundary, and Alfvén waves are injected from the left boundary. Some upstream ions can be reflected by the perpendicular shock, to be energized by the motional electric field in the shock. Therefore, these ions have a large temperature anisotropy immediately downstream of the shock, which can excite ion cyclotron waves. We discuss the transmission and enhancement of upstream Alfvén waves through the shock, and their influence on the downstream ion cyclotron waves. Their possible effects on particle acceleration by the shock are also investigated.

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