Solar Energetic Particle Acceleration at a Spherical Shock with the Shock Normal Angle ${\theta }_{B_n}$ Evolving in Space and Time

Xiaohang Chen, Joe Giacalone, Fan Guo

We present a 2D kinematic model to study the acceleration of solar energetic particles (SEPs) at a shock driven by a coronal mass ejection. The shock is assumed to be spherical abo…