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astro-ph.HE2026
Performance-portable GPU acceleration of the hybrid particle-in-cell code dHybridR
Bricker Ostler, Miha Cernetic, Damiano Caprioli
Hybrid particle-in-cell simulations are widely used to study kinetic processes in collisionless astrophysical and space plasmas, yet the high computational cost of large-scale thre…
astro-ph.HE2026
Importance of the Resonant Cosmic-Ray Streaming Instability Upstream of Collisionless Shocks
Bricker Ostler, Benedikt Schroer, Damiano Caprioli
Cosmic rays (CRs) escaping collisionless shocks form a dilute, relativistic population whose current amplifies the upstream magnetic field, a process widely attributed to the non-r…