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. AngelopoulosV. 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 , pp.1077-1101
来源数据库: Directory of Open Access Journals
DOI: 10.5194/angeo-31-1077-2013
原始语种摘要: In this study we investigate the upgoing electron beams at the topside ionosphere and their counterpart feature, the bidirectional quasi-parallel electron beams (QPEB) in the equatorial magnetosphere, with highlight on their potential application in estimating the location of the arc's root (AR) in the magnetotail central plasma sheet (CPS). We infer from FAST data that the upgoing electron beam is often found in the equatorward vicinity of the inverted-V arc. On the premise of such a scenario, we propose a method to estimate the location of the AR from available magnetospheric measurements by assuming that the tailward boundary of the QPEB demarcates the earthward boundary of the AR. We report two events with THEMIS observations of QPEBs in the magnetotail CPS, and demonstrate how to use...
全文获取路径: DOAJ  (合作)
影响因子:1.518 (2012)

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