Quasi-parallel electron beams and their possible application in inferring the auroral arc's root in the magnetosphere
作者: J. LiangF. JiangE. DonovanE. SpanswickV. AngelopoulosR. Strangeway
作者单位: 1Dept. of Physics and Astronomy, Univ. of Calgary, Canada
2Institute of Geophysics and Planetary Physics, UCLA, Canada
3Earth and Space Sciences Department, UCLA, Canada
刊名: Annales Geophysicae, 2013, Vol.31 (6), pp.1077-1101
来源数据库: Copernicus Journal
DOI: 10.5194/angeo-31-1077-2013
原始语种摘要: In this study we investigate the upgoing electron beamsat the topside ionosphere and their counterpart feature, the bidirectionalquasi-parallel electron beams (QPEB) in the equatorial magnetosphere, withhighlight on their potential application in estimating the location of thearc's root (AR) in the magnetotail central plasma sheet (CPS). We infer fromFAST data that the upgoing electron beam is often found in the equatorwardvicinity of the inverted-V arc. On the premise of such a scenario, wepropose a method to estimate the location of the AR from availablemagnetospheric measurements by assuming that the tailward boundary of theQPEB demarcates the earthward boundary of the AR. We report two events withTHEMIS observations of QPEBs in the magnetotail CPS, and demonstrate how touse the QPEB...
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影响因子:1.518 (2012)

  • magnetosphere 磁圈
  • auroral 极光的
  • magnetotail 磁层尾
  • electron 电子
  • ionosphere 电离层
  • their 他们的
  • topside 干舷船
  • equatorial 赤道仪
  • boundary 边界
  • estimate 估计