水星磁尾“超热”质子的晨昏分布及产生机制研究

摘要

Analysis of protons in the near-Mercury central plasma sheets show that the number fluxes of supra-thermal protons(＞～5keV)and temperatures of all protons are higher on the dawn side than dusk side.Further investigation shows that these asymmetries are prominent during active periods of Mercury's magnetosphere,but not during the magnetospheric quiet periods.