Relativistic Particle Transport and Acceleration in Structured Plasma Turbulence
arXiv:2112.09555 · doi:10.3847/1538-4357/ac5332
Abstract
We discuss the phenomenon of energization of relativistic charged particles in three-dimensional (3D) incompressible MHD turbulence and the diffusive properties of the motion of the same particles. We show that the random electric field induced by turbulent plasma motion leads test particles moving in a simulated box to be accelerated in a stochastic way, a second-order Fermi process. A small fraction of these particles happen to be trapped in large-scale structures, most likely formed due to the interaction of islands in the turbulence. Such particles get accelerated exponentially, provided their pitch angle satisfies some conditions. We discuss at length the characterization of the accelerating structure and the physical processes responsible for rapid acceleration. We also comment on the applicability of the results to realistic astrophysical turbulence.
References in corpus (13)
- 3D Turbulent Reconnection: Theory, Tests and Astrophysical Implications
- Galactic cosmic rays after the AMS-02 observations
- Kinetic turbulence in relativistic plasma: from thermal bath to non-thermal continuum
- Turbulence and Vorticity in Galaxy Clusters Generated by Structure Formation
- AMS-02 beryllium data and its implication for cosmic ray transport
- Second order Fermi reacceleration mechanisms and large scale synchrotron radio emission in intra-cluster bridges
- The low rate of Galactic pevatrons
- Recent Progress on Particle Acceleration and Reconnection Physics during Magnetic Reconnectionin the Magnetically-dominated Relativistic Regime
- Charged particle diffusion in isotropic random magnetic fields
- Properties of the First-order Fermi acceleration in fast magnetic reconnection driven by turbulence in collisional MHD flows
- Parker Solar Probe Observations of Helical Structures as Boundaries for Energetic Particles
- Particle transport in hybrid PIC shock simulations: A comparison of diagnostics
- Stochastic Turbulent Acceleration in a fractal environment
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- Acceleration of cosmic rays in presence of magnetohydrodynamic fluctuations at small scales
- Resonant energization of particles by radio AGN
- Particle acceleration and pitch-angle evolution in relativistic turbulence
- Modelling cosmic-ray transport: magnetised versus unmagnetised motion in astrophysical magnetic turbulence
- Jitter Mechanism as a Kind of Coherent Radiation: Constrained by the GRB 221009A Emission at 18 TeV
- On The Nonthermal Power Laws In Magnetized Turbulent Plasmas
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