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Reconnection and particle acceleration in three-dimensional current sheet evolution in moderately magnetized astrophysical pair plasma

Journal Article · · Journal of Plasma Physics

Magnetic reconnection, a plasma process converting magnetic energy to particle kinetic energy, is often invoked to explain magnetic energy releases powering high-energy flares in astrophysical sources including pulsar wind nebulae and black hole jets. Reconnection is usually seen as the (essentially two-dimensional) nonlinear evolution of the tearing instability disrupting a thin current sheet. To test how this process operates in three dimensions, we conduct a comprehensive particle-in-cell simulation study comparing two- and three-dimensional evolution of long, thin current sheets in moderately magnetized, collisionless, relativistically hot electron–positron plasma, and find dramatic differences. We first systematically characterize this process in two dimensions, where classic, hierarchical plasmoid-chain reconnection determines energy release, and explore a wide range of initial configurations, guide magnetic field strengths and system sizes. We then show that three-dimensional (3-D) simulations of similar configurations exhibit a diversity of behaviours, including some where energy release is determined by the nonlinear relativistic drift-kink instability. Thus, 3-D current sheet evolution is not always fundamentally classical reconnection with perturbing 3-D effects but, rather, a complex interplay of multiple linear and nonlinear instabilities whose relative importance depends sensitively on the ambient plasma, minor configuration details and even stochastic events. It often yields slower but longer-lasting and ultimately greater magnetic energy release than in two dimensions. Intriguingly, non-thermal particle acceleration is astonishingly robust, depending on the upstream magnetization and guide field, but otherwise yielding similar particle energy spectra in two and three dimensions. Although the variety of underlying current sheet behaviours is interesting, the similarities in overall energy release and particle spectra may be more remarkable.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1981808
Journal Information:
Journal of Plasma Physics, Vol. 87, Issue 6; ISSN 0022-3778
Publisher:
Cambridge University Press
Country of Publication:
United States
Language:
English

References (99)

Electron acceleration from contracting magnetic islands during reconnection journal October 2006
Reconnection in a Weakly Stochastic Field journal June 1999
Influence of 3D plasmoid dynamics on the transition from collisional to kinetic reconnection journal July 2019
The energetics of relativistic magnetic reconnection: ion-electron repartition and particle distribution hardness journal October 2014
Do dispersive waves play a role in collisionless magnetic reconnection? journal February 2014
Magnetic Reconnection Onset via Disruption of a Forming Current Sheet by the Tearing Instability journal March 2016
Fast Magnetic Reconnection in the Plasmoid-Dominated Regime journal December 2010
Extreme Particle Acceleration in Magnetic Reconnection Layers: Application to the Gamma-Ray Flares in the crab Nebula journal February 2012
The Rate of Three-dimensional Hall-MHD Reconnection journal May 2018
Particle Acceleration in the Driven Relativistic Reconnection journal August 2008
Particle acceleration in relativistic magnetic reconnection with strong inverse-Compton cooling in pair plasmas journal August 2018
‘Ideally’ unstable current sheets and the triggering of fast magnetic reconnection journal October 2016
Nonthermal Particle Acceleration in 3D Relativistic Magnetic Reconnection in Pair Plasma journal July 2017
Two-Fluid Magnetohydrodynamic Simulations of Relativistic Magnetic Reconnection journal April 2009
Three-Dimensional Evolution of a Relativistic Current Sheet: Triggering of Magnetic Reconnection by the Guide Field journal August 2005
Radiation-Dominated Relativistic Current Sheets journal August 2009
Three-dimensional stability of current sheets supported by electron pressure anisotropy journal October 2019
Fast Particle Acceleration in Three-dimensional Relativistic Reconnection journal December 2021
Bright Gamma-Ray Flares Powered by Magnetic Reconnection in QED-strength Magnetic Fields journal January 2019
Particle Acceleration and Plasma Dynamics During Magnetic Reconnection in the Magnetically Dominated Regime journal June 2015
On the Distribution of Particle Acceleration Sites in Plasmoid-Dominated Relativistic Magnetic Reconnection journal December 2015
A flux rope Network and Particle Acceleration in Three-Dimensional Relativistic Magnetic Reconnection journal August 2013
Fast reconnection in relativistic pair plasmas: Analysis of particle acceleration in self-consistent full particle simulations journal March 2004
Particle-in-cell simulations of three-dimensional collisionless magnetic reconnection journal December 2001
Determining the Dominant Acceleration Mechanism during Relativistic Magnetic Reconnection in Large-scale Systems journal July 2019
Three-Dimensional Spontaneous Magnetic Reconnection journal December 2016
Computing the reconnection rate in turbulent kinetic layers by using electron mixing to identify topology journal May 2014
Electromagnetic energy conversion in downstream fronts from three dimensional kinetic reconnection journal May 2014
Parallel electric fields are inefficient drivers of energetic electrons in magnetic reconnection journal December 2016
Reconnection of Quasi-Singular Current Sheets: the “Ideal” Tearing mode journal December 2013
Relativistic Reconnection: an Efficient Source of Non-Thermal Particles journal February 2014
The role of three-dimensional transport in driving enhanced electron acceleration during magnetic reconnection journal September 2017
Formation of Power-law Electron Energy Spectra in Three-dimensional Low- β Magnetic Reconnection journal October 2019
Kinetic beaming in radiative relativistic magnetic reconnection: a mechanism for rapid gamma-ray flares in jets journal August 2020
Three-dimensional dynamics of vortex-induced reconnection and comparison with THEMIS observations: VORTEX-INDUCED RECONNECTION IN 3-D journal September 2013
Three-Dimensional Dynamics of Collisionless Magnetic Reconnection in Large-Scale Pair Plasmas journal September 2008
Fast Magnetic Reconnection and Particle Acceleration in Relativistic Low-Density Electron-Positron Plasmas Without Guide Field journal April 2012
Role of electron physics in the development of turbulent magnetic reconnection in collisionless plasmas journal April 2011
The Generation of Nonthermal Particles in the Relativistic Magnetic Reconnection of Pair Plasmas journal November 2001
Electron and Proton Heating in Transrelativistic Guide Field Reconnection journal February 2019
Gamma-ray flares in the Crab Nebula: A case of relativistic reconnection? journal May 2014
Particle acceleration during magnetic reconnection in a low-beta pair plasma journal May 2016
Energy exchanges in reconnection outflows journal October 2016
The Role of the Guide Field in Relativistic Pair Plasma Reconnection journal April 2008
Local Regimes of Turbulence in 3D Magnetic Reconnection journal January 2020
Drift turbulence, particle transport, and anomalous dissipation at the reconnecting magnetopause journal June 2018
Magnetic reconnection journal March 2010
Electron and Proton Heating in Transrelativistic Magnetic Reconnection journal November 2017
Secondary Energization in Compressing Plasmoids during Magnetic Reconnection journal May 2021
Simulations of Particle Acceleration Beyond the Classical Synchrotron Burnoff Limit in Magnetic Reconnection: an Explanation of the crab Flares journal June 2013
Three dimensional density cavities in guide field collisionless magnetic reconnection journal March 2012
Constraints on the extremely high-energy cosmic ray accelerators from classical electrodynamics journal July 2002
Scaling of Magnetic Reconnection in Relativistic Collisionless Pair Plasmas journal March 2015
XSEDE: Accelerating Scientific Discovery journal September 2014
Acceleration of Particles at the Termination Shock of a Relativistic Striped wind journal October 2011
Relativistic Particle Acceleration in a Folded Current Sheet journal December 2004
Kinetic Simulations of Radiative Magnetic Reconnection in the Coronae of Accreting Black Holes journal August 2020
Particle Acceleration and Magnetic Dissipation in Relativistic Current Sheet of Pair Plasmas journal November 2007
Reconnection-Powered Linear Accelerator and Gamma-Ray Flares in the crab Nebula journal August 2011
Theory and Applications of Non-relativistic and Relativistic Turbulent Reconnection book January 2016
Generation of Turbulence in Colliding Reconnection Jets journal October 2018
Kinetic turbulence in fast three-dimensional collisionless guide-field magnetic reconnection journal October 2018
Electron and Proton Acceleration in Trans-relativistic Magnetic Reconnection: Dependence on Plasma Beta and Magnetization journal July 2018
Formation of Hard Power Laws in the Energetic Particle Spectra Resulting from Relativistic Magnetic Reconnection journal October 2014
Scalings pertaining to current sheet disruption mediated by the plasmoid instability journal September 2019
Why does Steady-State Magnetic Reconnection have a Maximum Local Rate of Order 0.1? journal February 2017
Magnetic Energy Release, Plasma Dynamics, and Particle Acceleration in Relativistic Turbulent Magnetic Reconnection journal September 2021
Exploring the Acceleration Mechanisms for Particle Injection and Power-law Formation during Transrelativistic Magnetic Reconnection journal August 2020
The Origin of Ultra-High-Energy Cosmic Rays journal September 1984
Multi-scale dynamics of magnetic flux tubes and inverse magnetic energy transfer journal July 2020
Electron acceleration in three-dimensional magnetic reconnection with a guide field journal October 2015
Particle acceleration and fast magnetic reconnection journal August 2019
Relativistic jets shine through shocks or magnetic reconnection? journal April 2015
Evolution of three-dimensional relativistic current sheets and development of self-generated turbulence journal February 2018
Radiative signatures of plasmoid-dominated reconnection in blazar jets journal October 2018
The relation between reconnected flux, the parallel electric field, and the reconnection rate in a three-dimensional kinetic simulation of magnetic reconnection journal December 2013
Non-thermal particle acceleration in collisionless relativistic electron–proton reconnection journal September 2017
The Extent of Power-Law Energy Spectra in Collisionless Relativistic Magnetic Reconnection in pair Plasmas journal December 2015
A review of the 0.1 reconnection rate problem journal September 2017
Electron acceleration by turbulent plasmoid reconnection journal April 2018
Three-Dimensional Relativistic pair Plasma Reconnection with Radiative Feedback in the crab Nebula journal February 2014
The role of the Weibel instability at the reconnection jet front in relativistic pair plasma reconnection journal February 2008
Magnetic Reconnection in Astrophysical and Laboratory Plasmas journal September 2009
Turbulent Reconnection in Relativistic Plasmas and Effects of Compressibility journal December 2015
Particle energization in 3D magnetic reconnection of relativistic pair plasmas journal May 2011
Stabilization of Magnetic Reconnection in the Relativistic Current Sheet journal September 2020
The Mechanism of Electron Injection and Acceleration in Transrelativistic Reconnection journal October 2019
Plasmoid Instability in Evolving Current Sheets and Onset of Fast Reconnection journal November 2017
Dissipation in Poynting‐Flux–dominated Flows: The σ‐Problem of the Crab Pulsar Wind journal July 2003
Fully kinetic simulations of undriven magnetic reconnection with open boundary conditions journal July 2006
3D turbulent reconnection: Theory, tests, and astrophysical implications journal January 2020
Kinetic simulations of x-line expansion in 3D reconnection: X-LINE EXPANSION IN 3D KINETIC RECONNECTION journal May 2006
The steady growth of the high-energy spectral cut-off in relativistic magnetic reconnection journal October 2018
Electron acceleration by parallel and perpendicular electric fields during magnetic reconnection without guide field journal November 2015
Plasmoids in relativistic reconnection, from birth to adulthood: first they grow, then they go journal July 2016
Efficient Production of High-Energy Nonthermal Particles During Magnetic Reconnection in a Magnetically Dominated Ion–Electron Plasma journal February 2016
Effects of Synchrotron Cooling and Pair Production on Collisionless Relativistic Reconnection journal May 2019
Beaming and Rapid Variability of High-Energy Radiation from Relativistic pair Plasma Reconnection journal July 2012
Plasmoid Instability in Forming Current Sheets journal November 2017