Observation of chorus inside near-Earth flux pileup region
作者单位：北京航空航天大学 University of Calgary Swedish Institute of Space Physics Charles University 北京大学 南昌大学 武汉大学
会议名称：《中国空间科学学会空间物理学专业委员会第十五届全国日地空...》
会议日期：2013年
学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学]
摘 要：Flux pileup region（FPR）is located behind the dipolarization front（DF）and is formed during the reconnection in the outflow *** the FPR,the magnetic field Bz component is large and the whistler waves are observed *** pitch angle scattering is suggested as the primary mechanism responsible for the generation of *** the FPR convected toward the Earth during the substorm period,it is obstructed by the dipole field near the geosychronus orbit to form the near-Earth FPR,which is sometimes called the plasma *** from the structureless whistlers in the tail FPR,we find that the whistlers inside the near-Earth FPR can be discrete *** the upper band and low band choruses are observed with the upper band has large propagation angle and the low band has small propagation *** notice that the rising-tone chorus can evolve to be falling-tone chorus within3seconds.