Particles acceleration at solar wind termination shock

摘要

A selfconsistent time dependent model is developed to study anomalous cosmic ray (ACR) acceleration at the heliospheric termination shock in the upwind direction and the shock modification under the influence of pickup protons and ACRs.Preliminary results demonstrate that ACR spectrum,termination shock structure and its position are very sensitive to the efficiency of ACR injection/acceleration.Relatively high injection rate of pickup protons is required in order to reproduce ACR proton spectrum consistent with the experiment.