Electron Preacceleration in Weak Quasi-perpendicular Shocks in High-beta Intracluster Medium

Giant radio relics in the outskirts of galaxy clusters are known to be lit up by the relativistic electrons produced via diffusive shock acceleration (DSA) in shocks with low sonic Mach numbers, Ms 3. The particle acceleration at these collisionless shocks critically depends on the kinetic plasma pr...

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