Physics – Plasma Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh42a..05o&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH42A-05
Physics
Plasma Physics
[7811] Space Plasma Physics / Discontinuities, [7833] Space Plasma Physics / Mathematical And Numerical Techniques, [7845] Space Plasma Physics / Particle Acceleration, [7851] Space Plasma Physics / Shock Waves
Scientific paper
Recent STEREO observations reveal that large scale downstream magnetic oscillations are quite typical for quasi-perpendicular low-Mach number shock. It has been shown recently, both in theory and 1D hybrid simulations, that these oscillations are, most plausibly, related to the collisionless relaxation of the downstream gyrating ion distributions. A number of observed shocks exhibit clear deviations from one-dimensionality. We extend our previous analysis to two-spatial dimensions by using 2D hybrid code, which allows studying the inhomogeneity along the shock front. We investigate in detail the formation of gyrating distributions in this 2D geometry and further relaxation of these distributions accompanying with generation of magnetic oscillations.
Gedalin Michael
Ofman Leon
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