Propinquity of current and vortex structures: effects on collisionless plasma heating
arXiv:1610.02912 · doi:10.3847/0004-637X/832/1/57
Abstract
Intermittency of heating in weakly collisional plasma turbulence is an active subject of research, with significant potential impact on understanding of the solar wind, solar corona and astrophysical plasmas. Recent studies suggest a role of vorticity in plasma heating. In magnetohydrodynamics small scale vorticity is generated near current sheets and this effect persists in kinetic plasma, as demonstrated here with hybrid and fully kinetic Particle-In-Cell (PIC) simulations. Furthermore, vorticity enhances local kinetic effects, with a generalized resonance condition selecting sign-dependent enhancements or reductions of proton heating and thermal anisotropy. In such plasmas heating is correlated with vorticity and current density, but more strongly with vorticity. These results help explain several prior results that find kinetic effects and energization near to, but not centered on, current sheets. Evidently intermittency in kinetic plasma involves multiple physical quantities, and the associated coherent structures and nonthermal effects are closely related.
arXiv commentAccepted for publication in ApJ
References in corpus (19)
- Astrophysical gyrokinetics: kinetic and fluid turbulent cascades in magnetized weakly collisional plasmas
- Cluster Magnetic Fields
- The Energy Dissipation Rate of Supersonic, Magnetohydrodynamic Turbulence in Molecular Clouds
- Thermal Instability & the Feedback Regulation of Hot Halos in Clusters, Groups, and Galaxies
- Perpendicular Ion Heating by Low-Frequency Alfven-Wave Turbulence in the Solar Wind
- Intermittency in the solar wind turbulence through probability distribution functions of fluctuations
- Current Sheets and Collisionless Damping in Kinetic Plasma Turbulence
- Kinetic dissipation and anisotropic heating in a turbulent collisionless plasma
- Kinetic Signatures and Intermittent Turbulence in the Solar Wind Plasma
- Proton Kinetic Effects in Vlasov and Solar Wind Turbulence
- Pressure anisotropy and small spatial scales induced by velocity shear
- A Dynamical Model of Plasma Turbulence in the Solar Wind
- Turbulence and cooling in galaxy cluster cores
- von Kármán energy decay and heating of protons and electrons in a kinetic turbulent plasma
- Transition from collisionless to collisional MRI
- Observational Test of Stochastic Heating in Low- Fast Solar Wind Streams
- Magnetic Discontinuities in Magnetohydrodynamic Turbulence and in the Solar Wind
- Energy dynamics and current sheet structure in fluid and kinetic simulations of decaying magnetohydrodynamic turbulence
- Anisotropic Intermittency of Magnetohydrodynamic Turbulence
Cited by in corpus (33)
- The multi-scale nature of the solar wind
- Energy transfer, pressure tensor and heating of kinetic plasma
- Magnetosperic Multiscale (MMS) observation of plasma velocity-space cascade: Hermite representation and theory
- Fully Kinetic Simulation of 3D Kinetic Alfven Turbulence
- Fully kinetic versus reduced-kinetic modelling of collisionless plasma turbulence
- Statistics of Kinetic Dissipation in Earth's Magnetosheath -- MMS Observations
- Differential kinetic dynamics and heating of ions in the turbulent solar wind
- Scale dependence of energy transfer in turbulent plasma
- Coherent structures and spectral energy transfer in turbulent plasma: a space-filter approach
- Dissipation measures in weakly-collisional plasmas
- Incompressive Energy Transfer in the Earth's Magnetosheath: Magnetospheric Multiscale Observations
- Solar Wind Turbulence Studies using MMS Fast Plasma Investigation Data
- Clustering of Intermittent Magnetic and Flow Structures near Parker Solar Probe's First Perihelion -- A Partial-Variance-of-Increments Analysis
- Local energy transfer rate and kinetic processes: the fate of turbulent energy in two-dimensional Hybrid Vlasov-Maxwell numerical simulations
- Energy Dissipation in Turbulent Reconnection
- Revisiting a classic: the Parker-Moffatt problem
- Magnetospheric Multiscale Observation of Kinetic Signatures in the Alfvén Vortex
- Observations of heating along intermittent structures in the inner heliosphere from PSP data
- Three-dimensional simulations of solar wind turbulence with the hybrid code CAMELIA
- Kinetic turbulence in fast 3D collisionless guide-field magnetic reconnection
- Collisionless energy transfer in kinetic turbulence: field-particle correlations in Fourier space
- A local approach to the study of energy transfers in incompressible magnetohydrodynamic turbulence
- On the deviation from Maxwellian of the ion velocity distribution functions in the turbulent magnetosheath
- Preferential Proton over Electron heating from coherent structures during the first perihelion of Parker Solar Probe
- Free energy sources in current sheets formed in collisionless plasma turbulence
- Space-filter techniques for quasi-neutral hybrid-kinetic models
- Intermittency and Ion Temperature-Anisotropy Instabilities: Simulation and Magnetosheath Observation
- Interplay of Turbulence and Proton-Microinstability Growth in Space Plasmas
- Association of intermittency with electron heating in the near-Sun solar wind
- Finite-Larmor-radius equilibrium and currents of the Earth's flank magnetopause
- Scale Statistics of Current Sheets in Relativistic Collisionless Plasma Turbulence
- Current sheets, plasmoids and flux ropes in the heliosphere. Part II: Theoretical aspects
- Ion-scale transition of plasma turbulence: Pressure-strain effect