Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-state Dynamics, Particle Acceleration, and Radiative Cooling

2024/01/02 by Fabio Bacchini, Bacchini, Fabio, Vladimir Zhdankin +11 · 1 citation
Physics and Astronomy · #Solar and Space Plasma Dynamics #Gamma-ray bursts and supernovae #Ionosphere and magnetosphere dynamics

paper · pdf · doi:10.48550/arxiv.2401.01399

Abstract

We present 3D fully kinetic shearing-box simulations of pair-plasma magnetorotational turbulence with unprecedented macro-to-microscopic scale separation. While retrieving the expected fluid behavior of the plasma at large scales, we observe a steepening of turbulent spectra at kinetic scales and substantial angular-momentum transport linked with kinetic processes. For the first time, we provide a definitive demonstration of nonthermal particle acceleration in kinetic magnetorotational turbulence agnostically of initial conditions, by means of a novel strategy exploiting synchrotron cooling.

Cited by

• Particle acceleration up to the synchrotron burn-off limit in relativistic magnetized turbulence

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