Studies on acceleration mechanisms of relativistic electrons in theEarth's outer radiation belt with observations and simulations

阿克波诺号宇宙飞船利用辐射监测器（RDM）对地球辐射带中的相对论电子进行了观测。Akebono的观测显示，在几次风暴的Dst最小期，电子外带的核心部分（L = 4左右）以不到几个小时的时间尺度迅速重建。对外辐射带的形成进行了模拟。在真实的太阳风条件下，利用全球MHD模型推导了磁场和电场的数值模拟。该模型能够成功地模拟在观测时间尺度下外辐射带的快速重建。

The spacecraft Akebono has made observations of relativistic electrons in the Earth’s radiation belts with the radiation monitor (RDM). The observations by Akebono have revealed rapid rebuilding of the core part (around L = 4) of the electron outer belt with a time scale of less than a few hours during the Dst minimum period for several storms. Simulations for formation of the outer radiation belt are attempted. A simulation in which the magnetic field and electric field are deduced from the global MHD model under realistic solar wind conditions is carried out. This model can successfully simulate a rapid rebuilding of the outer radiation belt with the observed time scale.