Slow shock characteristics as a function of distance from the X-line in the magnetotail

Details Slow shock characteristics as a function of distance from the X-line in the magnetotail Slow shock characteristics as a function of distance from the X-line in the magnetotail

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..903l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Aug. 1989, p. 903-906.

Physics

Plasma Physics

26

Geomagnetic Tail, Magnetic Field Reconnection, Magnetohydrodynamic Waves, Shock Waves, Space Plasmas, Earth Magnetosphere, Interplanetary Magnetic Fields, Mach Number, Plasma Physics, Solar Wind

Scientific paper

Both particle and MHD simulations are performed to study the characteristics of slow shocks in the magnetotail. The particle simulations indicate that switch-off shocks exhibit large amplitude rotational wave trains, while magnetotail slow shocks with an intermediate Mach number M(An) less than M(c) of about 0.98 do not display such rotational wave trains. The MHD simulations show that the spontaneous reconnection process in the near-earth plasma sheet leads to the formation of a pair of slow shocks tailward of the reconnection line (X-line). The properties of slow shocks are found to vary as a function of the distance from X-line due to the formation of plasmoid. Slow shocks in most regions of magnetotail are found to be nonswitch-off shocks with M(An) of less than 0.98. The present results are used to discuss the lack of large amplitude rotational wave trains at slow shocks in the deep magnetotail.

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