The Interaction of Two Coronal-Mass Ejections: Particle-in-cell simulation

Thursday, 18 December 2014
Zhongwei Yang1, Ying D. Liu1, Rui Wang1 and Can Huang2, (1)NSSC National Space Science Center, CAS, Beijing, China, (2)University of Science and Technology of China, Hefei, China
With an average of more than three coronal mass ejections (CMEs) per day near solar maximum, and a typical CME transit time from Sun to 1 AU between one and four days, CME–CME interaction should occur regularly in the inner heliosphere [Lugaz et al., 2005; 2013]. Previous observations and MHD simulation models have shown that understanding the physics of CME interactions requires that we include the particle dynamics. We present results of a two-dimensional simulation of the interaction of two CMEs with CME-driven shocks. The interaction process of two CMEs described by the PIC simulation is consistent with the previous MHD models. In addition, the local velocity distributions in the interaction region at different time also will be discussed.