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A new regime of fast magnetic reconnection with an out-of-plane (guide) magnetic field is reported in which the key role is played by an electron pressure anisotropy described by the Chew-Goldberger-Low gyrotropic equations of state in the…

等离子体物理 · 物理学 2015-06-23 P. A. Cassak , R. N. Baylor , R. L. Fermo , M. T. Beidler , M. A. Shay , M. Swisdak , J. F. Drake , H. Karimabadi

We use 3D fully kinetic particle-in-cell simulations to study the occurrence of magnetic reconnection in a simulation of decaying turbulence created by anisotropic counter-propagating low-frequency Alfv\'en waves consistent with…

Magnetic reconnection provides the primary source for explosive energy release, plasma heating and particle acceleration in many astrophysical environments. The last years witnessed a revival of interest in the MHD tearing instability as a…

等离子体物理 · 物理学 2019-11-13 Emanuele Papini , Simone Landi , Luca Del Zanna

Magnetic reconnection plays a crucial role in large dissipative events in space plasmas, such as solar flares and geomagnetic substorms, but there has been much confusion regarding reconnection onset responsible for the explosive events.…

空间物理 · 物理学 2019-02-06 M. Ugai

Magnetic reconnection in the partially ionized solar chromosphere is studied in 2.5-dimensional magnetohydrodynamic simulations including radiative cooling and ambipolar diffusion. A Harris current sheet with and without a guide field is…

太阳与恒星天体物理 · 物理学 2015-09-24 Lei Ni , Bernhard Kliem , Jun Lin , Ning Wu

Magnetic shear across the polarity inversion line (PIL) plays an important role in the explosive nature of reconnection onset and in the equilibration of current sheets, acting as a source of free energy that can enhance or inhibit the…

等离子体物理 · 物理学 2025-12-08 Dominic Payne , Marc Swisdak , James Drake , Tak Chu Li

Magnetic reconnection plays a critical role in many astrophysical processes where high energy emission is observed, e.g. particle acceleration, relativistic accretion powered outflows, pulsar winds and probably in dissipation of Poynting…

天体物理学 · 物理学 2010-11-24 G. C. Murphy , Rachid Ouyed , Guy Pelletier

Magnetic reconnection is a fundamental plasma process that converts magnetic energy into bulk flow energy, thermal energy, and nonthermal particle acceleration. Despite its importance, the statistical properties of the turbulent…

星系天体物理 · 物理学 2025-12-16 Yue Hu , Luca Comisso , Lorenzo Sironi , Siyao Xu

We show how the conversion of magnetic field energy via magnetic reconnection can progress in a fully three-dimensional, fast, volume-filling regime. An initial configuration representative of many laboratory, space and astrophysical…

太阳与恒星天体物理 · 物理学 2015-05-27 Giovanni Lapenta , Lapo Bettarini

Reconnection of the self-generated magnetic fields in laser-plasma interaction was first investigated experimentally by Nilson {\it et al.} [Phys. Rev. Lett. 97, 255001 (2006)] by shining two laser pulses a distance apart on a solid target…

Magnetic reconnection can develop spontaneously via the tearing instability, often invoked to explain disruptive instabilities in fusion devices, solar flares, the generation of periodic density disturbances at the tip of helmet streamers,…

等离子体物理 · 物理学 2026-03-04 Faisal Sayed , Anna Tenerani , Richard Fitzpatrick

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…

太阳与恒星天体物理 · 物理学 2022-03-30 Lars K. S. Daldorff , James E. Leake , James A. Klimchuk

It is known that the magnetic field of the Earth's closed magnetosphere can be highly displaced from the quiet-day configuration when interacting with the interplanetary magnetic field (IMF), an asymmetry largely controlled by the dawn-dusk…

Magnetic reconnection is a plasma phenomenon where a topological rearrangement of magnetic field lines with opposite polarity results in dissipation of magnetic energy into heat, kinetic energy and particle acceleration. Such a phenomenon…

高能天体物理现象 · 物理学 2016-08-31 Edoardo Striani , Andrea Mignone , Bhargav Vaidya , Gianluigi Bodo , Attilio Ferrari

The flat Harris current sheet model has become a powerful initial equilibrium in theory and simulation of magnetic reconnection in the magnetotail, at the magnetopause and also in multiple current sheet models of the heliosheath and…

空间物理 · 物理学 2013-07-29 R. A. Treumann , W. Baumjohann

Magnetic reconnection is best known from observations of the Sun where it causes solar flares. Observations estimate the reconnection rate a small, but non-negligible fraction of the Alfv\'en speed, so-called fast reconnection. Until…

太阳与恒星天体物理 · 物理学 2017-02-15 Andrey Beresnyak

Dynamic mitigation is presented for filamentation instability and magnetic reconnection in a plasm driven by a wobbling electron sheet current. The wobbling current introduces an oscillating perturbation and smooths the perturbation. The…

等离子体物理 · 物理学 2021-01-21 Yan-Jun Gu , Shigeo Kawata , Sergei V. Bulanov

Magnetic reconnection is an explosive process that accelerates particles to high energies in Earth's magnetosphere, offering a unique natural laboratory to study this phenomenon. This study investigates how well data-driven fully kinetic…

空间物理 · 物理学 2026-02-18 Nadja Reisinger , Fabio Bacchini

The spontaneous evolution of magnetic reconnection in generalized situations (with thermodynamic asymmetry regarding the current sheet and magnetic shear) is investigated using two-dimensional magnetohydrodynamic simulation. We focus on the…

太阳与恒星天体物理 · 物理学 2022-09-14 Shin-ya Nitta , Koji Kondoh

Magnetic reconnection processes in the near-Earth magnetotail can be highly 3-dimensional (3D) in geometry and dynamics, even though the magnetotail configuration itself is nearly two dimensional due to the symmetry in the dusk-dawn…

空间物理 · 物理学 2019-06-26 Ping Zhu , Zechen Wang , Jun Chen , Xingting Yan , Rui Liu