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Results from 2.5D and 3D studies of the onset and development of the tearing instability are presented, using high fidelity resistive MHD simulations. A limited parameter study of the strength of the reconnecting field (or shear angle) was…

Solar and Stellar Astrophysics · Physics 2022-03-30 Lars K. S. Daldorff , James E. Leake , James A. Klimchuk

In this series of papers we examine magnetic reconnection in a domain where the magnetic field does not vanish and the non-ideal region is localised in space. In a previous paper we presented a technique for obtaining analytical solutions…

Astrophysics · Physics 2015-05-13 A. L. Wilmot-Smith , G. Hornig , E. R. Priest

The importance of magnetic reconnection as an energy release mechanism in many solar, stellar, magnetospheric and astrophysical phenomena has long been recognised. Reconnection is the only mechanism by which magnetic fields can globally…

Solar and Stellar Astrophysics · Physics 2015-05-13 Clare E. Parnell , Andrew L. Haynes

A recently published, new analysis of current sheets updated the classic Harris 1D static solution by considering multiple classes of charged particle trajectories in a generalized dynamic current sheet. It used a 1D PIC simulation to…

Plasma Physics · Physics 2023-05-22 Thomas E. Moore , James L. Burch , Deirdre E. Wendel

Hall magnetohydrodynamics (MHD) properties near a two-dimensional (2D) X-type magnetic neutral line in the steady state are considered via heuristic and rigorous developments. Upon considering the steady-state as the asymptotic limit of the…

Plasma Physics · Physics 2009-11-13 Bhimsen K. Shivamoggi

Magnetic reconnection, a fundamental plasma process, is pivotal in understanding energy conversion and particle acceleration in astrophysical systems. While extensively studied in two-dimensional (2D) configurations, the dynamics of…

Plasma Physics · Physics 2025-08-05 Vinay Kumar , Pallavi Bhat

Magnetic reconnection is a fundamental process in a plasma that facilitates the release of energy stored in the magnetic field by permitting a change in the magnetic topology. In this article we present a review of the current state of…

Solar and Stellar Astrophysics · Physics 2012-07-04 D. I. Pontin

Within the resistive magnetohydrodynamic model, high-Lundquist number reconnection layers are unstable to the plasmoid instability, leading to a turbulent evolution where the reconnection rate can be independent of the underlying…

Plasma Physics · Physics 2019-09-04 A. Stanier , W. Daughton , A. Le , X. Li , R. Bird

Context: Coronal magnetic null points have been implicated as possible locations for localised heating events in 2D models. We investigate this possibility about fully 3D null points. Aims: We investigate the nature of the fast…

Solar and Stellar Astrophysics · Physics 2012-08-30 J. O. Thurgood , J. A. McLaughlin

This paper presents two-fluid simulations of forced magnetic reconnection with finite electron inertia in a collisionless three-dimensional (3D) cube with periodic boundaries in all three directions. Comparisons are made to analogous…

Plasma Physics · Physics 2009-06-02 Brian P. Sullivan , Barrett N. Rogers

Separators, which are in many ways the three-dimensional equivalent to two-dimensional nulls, are important sites for magnetic reconnection. Magnetic reconnection occurs in strong current layers which have very short length scales. The aim…

Solar and Stellar Astrophysics · Physics 2014-12-17 J. E. H. Stevenson , C. E. Parnell , E. R. Priest , A. L. Haynes

We performed three-dimensional Particle-in-Cell simulations of magnetic reconnection with multiple magnetic null points. Magnetic field energy conversion into kinetic energy was about five times higher than in traditional Harris sheet…

Space Physics · Physics 2015-09-29 Vyacheslav Olshevsky , Giovanni Lapenta , Stefano Markidis

Magnetic reconnection, a fundamentally important process in many aspects of astrophysics, is believed to be initiated by the tearing instability of an electric current sheet, a region where magnetic field abruptly changes direction and…

Solar and Stellar Astrophysics · Physics 2020-03-11 James Leake , Lars Daldorff , James Klimchuk

Magnetic field embedded in a perfectly conducting fluid preserves its topology for all time. Although ionized astrophysical objects, like stars and galactic disks, are almost perfectly conducting, they show indications of changes in…

Astrophysics of Galaxies · Physics 2010-03-16 A. Lazarian , G. Kowal , E. Vishniac , K. Kulpa-Dubel , K. Otmianowska-Mazur

We develop a framework for studying the statistical properties of current sheets in numerical simulations of 3D magnetohydrodynamic (MHD) turbulence. We describe an algorithm that identifies current sheets in a simulation snapshot and then…

High Energy Astrophysical Phenomena · Physics 2013-06-27 Vladimir Zhdankin , Dmitri A. Uzdensky , Jean C. Perez , Stanislav Boldyrev

Magnetic reconnection is one of the most important magnetic energy conversion processes observed in laboratory and space plasmas. It describes the breaking and joining of magnetic field lines, leading to the release of magnetic energy and…

Plasma Physics · Physics 2026-01-27 Maximilian M. Richter , Patricio A. Muñoz , Felix Spanier

Magnetic reconnection is a fundamental process in a laboratory, magnetospheric, solar and astrophysical plasma, whereby magnetic energy is converted into heat, bulk kinetic energy and fast particle energy. Its nature in two dimensions is…

Solar and Stellar Astrophysics · Physics 2021-06-09 Ting Li , Eric Priest , Ruilong Guo

Null and X-points are not themselves directly important to magnetic reconnection because distinguishable field lines do not approach them closely. Even in a collision-free plasma, magnetic field lines that approach each other on a scale…

Plasma Physics · Physics 2020-01-08 Allen H. Boozer

We present the first results of three-dimensional (3D) numerical magnetohydrodynamic (MHD) simulations of the onset of magnetic reconnection via the tearing instability in dynamically thinning current sheets in the solar corona. In all our…

Solar and Stellar Astrophysics · Physics 2024-06-10 James Leake , Lars Daldorff , James Klimchuk

Recently, magnetic reconnection during collisionless, stressed, X-point collapse was studied using kinetic, 2.5D, fully electromagnetic, relativistic Particle-in-Cell numerical code [D. Tsiklauri and T. Haruki, Phys. Plasmas, 14, 112905…

Astrophysics · Physics 2008-10-23 D. Tsiklauri , T. Haruki