How cosmic turbulence supercharges particle acceleration in shocks

Electrons bouncing off oblique shocks create a foreshock region where instabilities amplify magnetic fields—but what happens if turbulence is already there? These simulations reveal that ambient turbulence enhances magnetic waves, compresses the foreshock, and produces more high-energy electrons than in quiet plasma. This matters for understanding cosmic ray sources like supernova remnants and jets, where turbulent media are the rule, not the exception.