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| 1 | Butterfly distribution of Earth's radiation belt relativistic electrons induced by dayside chorus显示文摘Previous theoretical studies have shown that dayside chorus can produce butterfly distribution of energetic electrons in the Earth's radiation belts by preferentially accelerating medium pitch angle electrons, but this requires the further confirmation from highresolution satellite observation. Here, we report correlated Van Allen Probes data on wave and particle during the 11-13 April,2014 geomagnetic storm. We find that a butterfly pitch angle distribution of relativistic electrons is formed around the location L = 4.52, corresponding to the presence of enhanced dayside chorus. Using a Gaussian distribution fit to the observed chorus spectra, we calculate the bounce-averaged diffusion rates and solve two-dimensional Fokker-Planck equation. Numerical results demonstrate that acceleration by dayside chorus can yield the electron flux evolution both in the energy and butterfly pitch angle distribution comparable to the observation, providing a further evidence for the formation of butterfly distribution of relativistic electrons driven by very low frequency(VLF) plasma waves. | jin yuyue yang chang he yihua liu si zhou qinghua xiao fuliang | 2018 | Science China(Technological Sciences)2018，61，2： | 5 |
| 2 | Magnetospheric Physics in China显示文摘In the past two years, much progress has been made in magnetospheric physics by using the data of Double Star Program, Cluster, THEMIS, RBSP, Swarm, MMS, ARTEMIS, MESSENGER missions etc., or by computer simulations. This paper briefly reviews these works based on papers selected from the 227 publications from January 2016 to December 2017. The subjects cover most sub-branches of magnetospheric physics,including geomagnetic storm, magnetospheric substorm, magnetic reconnection, solar wind-magnetosphereionosphere interaction, radiation belt, plasmasphere, outer magnetosphere, magnetotail, geomagnetic field,auroras, and currents. | CAO Jinbin YANG Junying | 2018 | 空间科学学报2018，38，5： | 0 |
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