Physics
Scientific paper
Jan 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006adspr..38...57m&link_type=abstract
Advances in Space Research, Volume 38, Issue 1, p. 57-63.
Physics
9
Scientific paper
We review recent studies on mass ratio dependence of self-reformation of high Mach number, low β, highly oblique quasi-perpendicular shocks by Scholer et al. (Scholer, M., Shinohara, I., Matsukiyo, S. Quasi-perpendicular shocks: length scale of the cross-shock potential, shock reformation, and implication for shock surfing, J. Geophys. Res., 108, 1014, doi:10.1029/2002JA009515, 2003.), Matsukiyo and Scholer (Matsukiyo, S., Scholer, M. Modified two-stream instability in the foot of high Mach number quasi-perpendicular shocks, J. Geophys. Res., 108, 1459, doi:10.1029/2003JA10080, 2003.), and Scholer and Matsukiyo (Scholer, M., Matsukiyo, S. Nonstationarity of quasi-perpendicular shocks: a comparison of full particle simulations with different ion to electron mass ratio, Ann. Geophys., in press, 2004.). A one-dimensional full particle simulation code is utilized. In small ion to electron mass ratio runs, reformation is due to the accumulation of gyrating reflected ions at the upstream edge of the foot. Furthermore, at an extremely small mass ratio, the Buneman instability is generated in the foot. In the realistic mass ratio run, however, the modified two-stream instability excited in the foot plays an important role in a shock reformation process.
Matsukiyo Shuichi
Scholer Manfred
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