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Title: Collisionless Reconnection in Magnetohydrodynamic and Kinetic Turbulence

Journal Article · · The Astrophysical Journal (Online)
ORCiD logo [1];  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Univ. of Wisconsin, Madison, WI (United States); Space Science Inst., Boulder, CO (United States)

It has recently been presented that the inertial interval in magnetohydrodynamic (MHD) turbulence is terminated at small scales not by a Kolmogorov-like dissipation region, but rather by a new sub-inertial interval mediated by tearing instability. Yet, many astrophysical plasmas are nearly collisionless so the MHD approximation is not applicable to turbulence at small scales. In this paper, we propose an extension of the theory of reconnection-mediated turbulence to plasmas which are so weakly collisional that the reconnection occurring in the turbulent eddies is caused by electron inertia rather than by resistivity. We find that the transition scale to reconnection-mediated turbulence depends on the plasma beta and on the assumptions of the plasma turbulence model. However, in all of the cases analyzed, the energy spectra in the reconnection-mediated interval range from $$E({k}_{\perp }){{dk}}_{\perp }\propto {k}_{\perp }^{-8/3}{{dk}}_{\perp }$$ to $$E({k}_{\perp }){{dk}}_{\perp }\propto {k}_{\perp }^{-3}{{dk}}_{\perp }$$.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
SC0016215; AGS-1261659; PHY-1707272
OSTI ID:
1542012
Journal Information:
The Astrophysical Journal (Online), Vol. 850, Issue 2; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 68 works
Citation information provided by
Web of Science

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Cited By (28)

Constraints on ion versus electron heating by plasma turbulence at low beta journal May 2019
Diffusion regions and 3D energy mode development in spontaneous reconnection journal July 2019
3D turbulent reconnection: Theory, tests, and astrophysical implications journal January 2020
Thermal disequilibration of ions and electrons by collisionless plasma turbulence journal December 2018
The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A* journal June 2018
Two-temperature, Magnetically Arrested Disc simulations of the jet from the supermassive black hole in M87 journal April 2019
Solar Wind Turbulent Cascade from MHD to Sub-ion Scales: Large-size 3D Hybrid Particle-in-cell Simulations journal January 2018
Fully Kinetic Large-scale Simulations of the Collisionless Magnetorotational Instability journal June 2018
Large-scale Compression Acceleration during Magnetic Reconnection in a Low- β Plasma journal October 2018
Can Hall Magnetohydrodynamics Explain Plasma Turbulence at Sub-ion Scales? journal January 2019
Numerical Study of Inertial Kinetic-Alfvén Turbulence journal January 2019
Electron and Proton Heating in Transrelativistic Guide Field Reconnection journal February 2019
Fast Magnetic Reconnection: Secondary Tearing Instability and Role of the Hall Term journal October 2019
Kinetic-scale Spectral Features of Cross Helicity and Residual Energy in the Inner Heliosphere journal February 2020
The Radial Dependence of Proton-scale Magnetic Spectral Break in Slow Solar Wind during PSP Encounter 2 journal February 2020
Magnetic Reconnection May Control the Ion-scale Spectral Break of Solar Wind Turbulence journal March 2018
Dual Phase-space Cascades in 3D Hybrid-Vlasov–Maxwell Turbulence journal March 2018
Turbulence in Magnetized Pair Plasmas journal October 2018
Properties of the Turbulence Associated with Electron-only Magnetic Reconnection in Earth’s Magnetosheath journal June 2019
Solar wind turbulent cascade from MHD to sub-ion scales: large-size 3D hybrid particle-in-cell simulations text January 2017
Dual phase-space cascades in 3D hybrid-Vlasov-Maxwell turbulence text January 2018
Magnetic Reconnection May Control the Ion-Scale Spectral Break of Solar Wind Turbulence text January 2018
The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A* text January 2018
Electron and Proton Heating in Transrelativistic Guide Field Reconnection text January 2019
Diffusion regions and 3D energy mode development in spontaneous reconnection text January 2019
Fast Magnetic Reconnection: Secondary Tearing Instability and Role of the Hall Term text January 2019
3D Turbulent Reconnection: Theory, Tests and Astrophysical Implications text January 2020
The Radial Dependence of Proton-scale Magnetic Spectral Break in Slow Solar Wind during PSP Encounter 2 text January 2020