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当太阳活动频繁,特别是有耀斑爆发或者日冕物质抛射驱动的激波时,经常能够观察到高能粒子(能量从几十ke V到几十Me V)通量突然增加,这种由太阳活动产生的高能粒子事件被称为太阳高能粒子事件。文章研究了耀斑和日冕物质抛射产生的两类高能粒子事件,重点讨论了高能粒子横越磁力线的扩散对粒子在行星际空间传播过程中所起到的作用,给出了对于不同扩散系数条件的数值模拟结果。
When the solar activity is frequent, especially the shock waves driven by flare bursts or coronal mass ejection, it is often observed that the flux of energetic particles (energies from tens of keV to tens of MeV) increases abruptly, which is caused by solar activity The high-energy particle event is called the solar high-energy particle event. In this paper, two types of high-energy particle events caused by flares and coronal mass ejection are studied. The effects of the diffusion of high-energy particles across magnetic lines on the propagation of particles in the interplanetary space are discussed. The numerical results of different diffusion coefficients Simulation results.