资源环境科技发展态势分析平台

The present study proposes a new mechanism to cause a strong electron heating in the magnetic islands ejected from the reconnection current layer. A large-scale full kinetic simulation in three-dimensional system demonstrates that the electrons are effectively accelerated by the non-ideal electric field generated through the electromagnetic turbulence excited in the magnetic islands. It is found that the high-energy electrons are efficiently scattered by the turbulence, resulting in the strong electron heating. The existence of turbulence and the associated non-ideal electric field in the magnetic islands is consistent with recent satellite observations in the Earth's magnetosphere.