Acceleration of Relativistic Electrons by MHD Turbulence: Implications for Non-thermal Emission from Black Hole Accretion Disks
arXiv:1403.3123 · doi:10.1088/0004-637X/791/1/71
Abstract
We use analytic estimates and numerical simulations of test particles interacting with magnetohydrodynamic (MHD) turbulence to show that subsonic MHD turbulence produces efficient second-order Fermi acceleration of relativistic particles. This acceleration is not well-described by standard quasi-linear theory but is a consequence of resonance broadening of wave-particle interactions in MHD turbulence. We provide momentum diffusion coefficients that can be used for astrophysical and heliospheric applications and discuss the implications of our results for accretion flows onto black holes. In particular, we show that particle acceleration by subsonic turbulence in radiatively inefficient accretion flows can produce a non-thermal tail in the electron distribution function that is likely important for modeling and interpreting the emission from low luminosity systems such as Sgr A* and M87.
7 pages, 4 figures; accepted by the Astrophysical Journal
References in corpus (3)
Cited by in corpus (51)
- Particle Acceleration in Relativistic Plasma Turbulence
- Hidden Cores of Active Galactic Nuclei as the Origin of Medium-Energy Neutrinos: Critical Tests with the MeV Gamma-Ray Connection
- The interplay of magnetically-dominated turbulence and magnetic reconnection in producing nonthermal particles
- Kinetic turbulence in relativistic plasma: from thermal bath to non-thermal continuum
- Radio and Millimeter Monitoring of Sgr A*: Spectrum, Variability, and Constraints on the G2 Encounter
- Electron and ion energization in relativistic plasma turbulence
- Turbulence and Particle Acceleration in Giant Radio Haloes: the Origin of Seed Electrons
- High-Energy Neutrinos from Magnetized Coronae of Active Galactic Nuclei and Prospects for Identification of Seyfert Galaxies and Quasars in Neutrino Telescopes
- High-Energy Neutrino and Gamma-Ray Emission from Tidal Disruption Events
- Probing the magnetic field structure in Sgr A* on Black Hole Horizon Scales with Polarized Radiative Transfer Simulations
- First-principles demonstration of diffusive-advective particle acceleration in kinetic simulations of relativistic plasma turbulence
- Acceleration and Escape Processes of High-energy Particles in Turbulence inside Hot Accretion Flows
- Ion and Electron Acceleration in Fully Kinetic Plasma Turbulence
- Properties of magnetohydrodynamic modes in compressively driven plasma turbulence
- Particle acceleration in relativistic turbulence: A theoretical appraisal
- Particle acceleration in strong MHD turbulence
- Stochastic Particle Acceleration in Turbulence Generated by the Magnetorotational Instability
- Resonance-broadened transit time damping of particles in MHD turbulence
- Hadronic High-energy Emission from Magnetically Arrested Disks in Radio Galaxies
- Identification of plasma modes in Galactic turbulence with synchrotron polarization
- A magnetized strongly turbulent corona as the source of neutrinos from NGC 1068
- Shock Acceleration Model for the Toothbrush Radio Relic
- Ultrahigh-Energy Cosmic Ray Production by Turbulence in Gamma-Ray Burst Jets and Cosmogenic Neutrinos
- Electron Heating by the Ion Cyclotron Instability in Collisionless Accretion Flows. II. Electron Heating Efficiency as a Function of Flow Conditions
- On the Radio Emitting Particles of the Crab Nebula: Stochastic Acceleration Model
- Revealing the Production Mechanism of High-Energy Neutrinos from NGC 1068
- Powerlaw spectra from stochastic acceleration
- Stochastic Acceleration Model of Gamma-Ray Burst with Decaying Turbulence
- Particle Energy Diffusion in Linear Magnetohydrodynamic Waves
- High-energy neutrinos from fallback accretion of binary neutron star merger remnants
- The intrinsic structure of Sagittarius A* at 1.3 cm and 7 mm
- Reacceleration of electrons in supernova remnants
- Nonlinear aspects of stochastic particle acceleration
- A Fresh Look at Narrow-Angle Tail Radio Galaxy Dynamics, Evolution and Emissions
- Particle Diffusion and Acceleration in Magnetorotational Instability Turbulence
- Perpendicular diffusion of energetic particles in noisy reduced magnetohydrodynamic turbulence
- Nonthermal processes in hot accretion flows onto supermassive black holes: An inhomogeneous model
- Neutrinos from stochastic acceleration in black hole environments
- Ultra-High-Energy Cosmic Rays Accelerated by Magnetically Dominated Turbulence
- Stochastic Ion Acceleration by the Ion-cyclotron Instability in a Growing Magnetic Field
- The implicit contribution of slab modes to the perpendicular diffusion coefficient of particles interacting with two-component turbulence
- Acceleration of ultra-high energy cosmic rays in the early afterglows of gamma-ray bursts: concurrence of jet's dynamics and wave-particle interactions
- On the narrow spectral feature at 3 TeV in the MAGIC spectrum of Mrk 501
- Stochastic Electron Acceleration by the Whistler Instability in a Growing Magnetic Field
- Leaking Outside the Box: Kinetic Turbulence with Cosmic-Ray Escape
- Scaling Relations in Two-Dimensional Relativistic Hydrodynamic Turbulence
- Energy Diffusion and Advection Coefficients in Kinetic Simulations of Relativistic Plasma Turbulence
- Inertial range of magnetorotational turbulence
- Stochastic Acceleration of Electrons by Fast Magnetosonic Waves in Solar Flares: the Effects of Anisotropy in Velocity andWavenumber Space
- Impact of the nonthermal electron radiation effects on the horizon scale image structure of Sagittarius A*
- X-ray Fourier lag-frequency spectra modulated by stochastic turbulent acceleration in the jets of high-frequency-peaked BL Lac