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Magnetic reconnection has long been known to be the most important mechanism not only for mixing the plasmas by changing the magnetic field topology but also for releasing the magnetic field energy into the plasma kinetic energy. During…

High Energy Astrophysical Phenomena · Physics 2024-04-25 Masahiro Hoshino

We discuss electron acceleration and heating during collisionless magnetic reconnection by using the results of implicit kinetic simulations of Harris current sheets. We consider and compare electron dynamics in plasmas with different \beta…

Astrophysics · Physics 2009-11-07 Paolo Ricci , Giovanni Lapenta , J. U. Brackbill

We report simulation results for turbulent magnetic reconnection obtained using a newly developed Reynolds-averaged magnetohydrodynamics model. We find that the initial Harris current sheet develops in three ways, depending on the strength…

Earth and Planetary Astrophysics · Physics 2015-06-16 Katsuaki Higashimori , Nobumitsu Yokoi , Masahiro Hoshino

We discuss how the model of magnetic reconnection in the presence of turbulence proposed inLazarian & Vishniac 1999 makes the reconnection rate independent either of resistivity or microscopic plasma effects, but determined entirely by the…

High Energy Astrophysical Phenomena · Physics 2013-02-15 A. Lazarian , Huirong Yan

Detailed comparisons are reported between laboratory observations of electron-scale dissipation layers near a reconnecting X-line and direct two-dimensional full-particle simulations. Many experimental features of the electron layers, such…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 H. Ji , Y. Ren , M. Yamada , S. Dorfman , W. Daughton , S. P. Gerhardt

A mechanism for fast magnetic reconnection in collisionless plasma is studied for understanding sawtooth collapse in tokamak discharges by using a two-fluid model for cold ions and electrons. Explosive growth of the tearing mode enabled by…

Plasma Physics · Physics 2015-06-12 M. Hirota , P. J. Morrison , Y. Ishii , M. Yagi , N. Aiba

Magnetic reconnection is a process that converts magnetic energy into plasma energy by changing the magnetic field line topology. The outstanding question is why the reconnection rate is $\mathcal{O}(0.01 - 0.1)$ in many astrophysical…

Solar and Stellar Astrophysics · Physics 2025-07-17 Keita Akutagawa , Shinsuke Imada , Munehito Shoda

Fast magnetic reconnection was observed between magnetized laser-produced plasmas at the National Ignition Facility. Two highly-elongated plasma plumes were produced by tiling two rows of lasers, with magnetic fields generated in each plume…

Reconnection and turbulence are two of the most commonly observed dynamical processes in plasmas, but their relationship is still not fully understood. Using 2.5D kinetic particle-in-cell simulations of both strong turbulence and…

The possibility of studying non-thermal electron energization in laser-driven plasma experiments of magnetic reconnection is studied using two- and three-dimensional particle-in-cell simulations. It is demonstrated that non-thermal…

Plasma Physics · Physics 2016-03-23 Samuel Totorica , Tom Abel , Frederico Fiuza

How energy is converted into thermal energy in weakly collisional and collisionless plasma processes such as magnetic reconnection and plasma turbulence has recently been the subject of intense scrutiny. The pressure-strain interaction has…

Plasma Physics · Physics 2023-05-31 M. Hasan Barbhuiya , Paul A. Cassak

The past decade has seen an outstanding development of nonthermal particle acceleration in magnetic reconnection in magnetically-dominated systems, with clear signatures of power-law energy distributions as a common outcome of…

High Energy Astrophysical Phenomena · Physics 2023-09-11 Xiaocan Li , Fan Guo , Yi-Hsin Liu , Hui Li

Fast reconnection operating in magnetically dominated plasmas is often invoked in models for magnetar giant flares, for magnetic dissipation in pulsar winds, or to explain the gamma-ray flares observed in the Crab nebula, hence its…

High Energy Astrophysical Phenomena · Physics 2016-07-27 L. Del Zanna , E. Papini , S. Landi , M. Bugli , N. Bucciantini

Reconnection physics at micro-scales is investigated in an electron magnetohydrodynamics frame. A new process of collapse of the neutral current sheet is demonstrated by means of analytical and numerical solutions. It shows how at scales…

Plasma Physics · Physics 2017-12-01 I F Shaikhislamov

The plasma heating during collisionless magnetic reconnection is investigated using particle-in-cell simulations. We analyze the time evolution of the plasma temperature associated with the motion of the reconnecting flux tube, where the…

High Energy Astrophysical Phenomena · Physics 2018-11-28 Masahiro Hoshino

Magnetic reconnection is thought to be the dynamical mechanism underlying many explosive phenomena observed both in space and in the laboratory, though the question of how fast magnetic reconnection is triggered in such high Lundquist ($S$)…

Solar and Stellar Astrophysics · Physics 2017-01-04 Anna Tenerani , Marco Velli , Fulvia Pucci , Simone Landi , Antonio Franco Rappazzo

Magnetic reconnection in partially ionized plasmas is a ubiquitous phenomenon spanning the range from laboratory to intergalactic scales, yet it remains poorly understood and relatively little studied. Here, we present results from a…

Plasma Physics · Physics 2014-03-04 James E Leake , Vyacheslav S Lukin , Mark G Linton

Magnetized turbulence and magnetic reconnection are often invoked to explain the nonthermal emission observed from a wide variety of astrophysical sources. By means of fully-kinetic 2D and 3D PIC simulations, we investigate the interplay…

High Energy Astrophysical Phenomena · Physics 2019-12-04 Luca Comisso , Lorenzo Sironi

During magnetically dominated relativistic reconnection, inflowing plasma depletes the initial relativistic pressure at the x-line and collisionless plasma heating inside the diffusion region is insufficient to overcome this loss. The…

High Energy Astrophysical Phenomena · Physics 2020-04-01 Yi-Hsin Liu , Shan-Chang Lin , Michael Hesse , Fan Guo , Xiaocan Li , Haocheng Zhang , Sarah Peery

Magnetic reconnection is a fundamental plasma process that is thought to play a key role in the production of nonthermal particles associated with explosive phenomena in space physics and astrophysics. Experiments at high-energy-density…

Plasma Physics · Physics 2020-12-07 Samuel Totorica , Masahiro Hoshino , Tom Abel , Frederico Fiuza