In this section
@article{Shi:2017:10.1002/2017JA024360,
author = {Shi, J and Zhang, Z and Torkar, K and Cheng, Z and Farzakeley, A and Dunlop, M and Carr, C},
doi = {10.1002/2017JA024360},
journal = {Journal of Geophysical Research: Space Physics},
pages = {11245--11255},
title = {Distribution of Field-Aligned Electron Events in the High-Altitude Polar Region: Cluster Observations},
url = {http://dx.doi.org/10.1002/2017JA024360},
volume = {122},
year = {2017}
}
TY - JOUR
AB - Field-aligned electrons (FAEs) are important for the energy transport in the solar wind-magnetosphere-ionosphere coupling. However, the distribution of FAEs and the concerning physical mechanism in different altitudes of the polar region are still unclear. In this paper, data from the Cluster spacecraft were used to study the characteristics of FAEs in high-altitude polar region. We selected FAE events with a flux higher than 3 × 10 8 (cm 2 s) -1 for our analysis. Their distribution was double peaked around the auroral oval. The main peak occurred around the cusp region (magnetic local time (MLT) 0700-1500) which leaned to the dawnside. The other peak appeared in the evening sector with MLT 2100-2300 just before midnight. The durations of the FAE events covered a wide range from 4 to 475 s, with most of the FAE events lasting less than 40 s. The possible physical mechanisms are discussed, namely, that the downward FAEs may consist of decelerated solar wind and reflected up flowing ionospheric electrons in the potential drops, whereas the upward ones may be mirrored solar wind electrons and accelerated ionospheric up flowing electrons.
AU - Shi,J
AU - Zhang,Z
AU - Torkar,K
AU - Cheng,Z
AU - Farzakeley,A
AU - Dunlop,M
AU - Carr,C
DO - 10.1002/2017JA024360
EP - 11255
PY - 2017///
SN - 2169-9380
SP - 11245
TI - Distribution of Field-Aligned Electron Events in the High-Altitude Polar Region: Cluster Observations
T2 - Journal of Geophysical Research: Space Physics
UR - http://dx.doi.org/10.1002/2017JA024360
UR - http://hdl.handle.net/10044/1/54634
VL - 122
ER -