Electron Acceleration at Quasi-parallel Nonrelativistic Shocks: A 1D Kinetic Survey

S Gupta, D Caprioli, A Spitkovsky - The Astrophysical Journal, 2024 - iopscience.iop.org
We present a survey of 1D kinetic particle-in-cell simulations of quasi-parallel nonrelativistic
shocks to identify the environments favorable for electron acceleration. We explore an …

Understanding Streaming Instabilities in the Limit of High Cosmic Ray Current Density

E Lichko, D Caprioli, B Schroer, S Gupta - arXiv preprint arXiv:2411.05704, 2024 - arxiv.org
A critical component of particle acceleration in astrophysical shocks is the non-resonant
(Bell) instability, where the streaming of cosmic rays (CRs) leads to the amplification of …