Turbulence evolution and shock acceleration of solar energetic particles

Abstract

Abstract. We model the effects of self-excitationldamping and shock transmission of AlfvCn waves on solar-energetic-particle (SEP) acceleration at a coronal-mass-ejection (CME) driven parallel shock. SEP-excited outward upstream waves speedily bootstrap acceleration. Shock transmission further raises the SEP-excited wave intensities at high wavenumbers but lowers them at low wavenumbers through wavenumber shift. Downstream, SEP excitation of inward waves and damping of outward waves tend to slow acceleration. Nevertheless, > 2000 kmls parallel shocks at -3.5 solar radii can accelerate SEPs to 100 MeV in < 5 minutes.