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Magnetic reconnection requires the violation of the frozen-in condition which ties gyrating charged particles to the magnetic field inhibiting diffusion. Ongoing reconnection has been identified in near-Earth space as being responsible for…

Space Physics · Physics 2014-01-24 R. A. Treumann , W. Baumjohann

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 new look at the structure of the electron diffusion region in collisionless magnetic reconnection is presented. The research is based on a particle-in-cell simulation of asymmetric magnetic reconnection, which include a temperature…

Fully kinetic simulations are applied to the study of 2D anti-parallel reconnection, elucidating the dynamics by which the electron fluid maintains force balance within both the electron diffusion region (EDR) and the ion diffusion region…

Plasma Physics · Physics 2023-06-16 J. Egedal , H. Gurram , S. Greess , W. Daughton , A. Lê

3D kinetic-scale turbulence is studied numerically in the regime where electrons are strongly magnetized (the ratio of plasma species pressure to magnetic pressure is $\beta_e=0.1$ for electrons and $\beta_i=1$ for ions). Such a regime is…

Plasma Physics · Physics 2023-07-05 Cristian Vega , Vadim Roytershteyn , Gian Luca Delzanno , Stanislav Boldyrev

Particle in cell (PIC) simulations of collisionless magnetic reconnection are presented that demonstrate that the electron dissipation region develops a distinct two-scale structure along the outflow direction. The length of the electron…

Plasma Physics · Physics 2009-11-13 M. A. Shay , J. F. Drake , M. Swisdak

A mechanism for explosive magnetic reconnection is investigated by analyzing the nonlinear evolution of a collisionless tearing mode in a two-fluid model that includes the effects of electron inertia and temperature. These effects…

Plasma Physics · Physics 2015-12-08 Makoto Hirota , Yuji Hattori , Philip J. Morrison

Models for collisionless magnetic reconnection in near-Earth space are distinctly characterized as 2D or 3D. In 2D kinetic models, the frozen-in law for the electron fluid is usually broken by laminar dynamics involving structures set by…

Electron dynamics and energization are one of the key components of magnetic field dissipation in collisionless reconnection. In 2D numerical simulations of magnetic reconnection, the main mechanism that limits the current density and…

Plasma Physics · Physics 2019-10-09 F. Pucci , S. Usami , H. Ji , X. Guo , R. Horiuchi , S. Okamura , W. Fox , J. Jara-Almonte , M. Yamada , J. Yoo

Collisionless space plasma turbulence can generate reconnecting thin current sheets as suggested by recent results of numerical magnetohydrodynamic simulations. The MMS mission provides the first serious opportunity to check if small…

The stability of electron current sheets embedded within the reconnection exhaust is studied with a 3D fully kinetic particle-in-cell simulation. The electron current layers studied here form self-consistently in a reconnection regime with…

Plasma Physics · Physics 2020-01-08 Ari Le , Adam Stanier , Bill Daughton , Jonathan Ng , Jan Egedal , W. Dave Nystrom , Bob Bird

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 rate of reconnection characterizes how quickly flux and mass can move into and out of the reconnection region. In the Terrestrial Reconnection EXperiment (TREX), the rate at which antiparallel asymmetric reconnection occurs is modulated…

Magnetic reconnection has been observed in the transition region of quasi-parallel shocks. In this work, the particle-in-cell method is used to simulate three-dimensional reconnection in a quasi-parallel shock. The shock transition region…

Space Physics · Physics 2022-09-07 J. Ng , L. -J. Chen , N. Bessho , J. Shuster , B. Burkholder , J. Yoo

Plasmoid-driven magnetic reconnection in elongated current sheets is suspected to be an ubiquitous phenomenon in space and astrophysical plasmas, but the mechanisms driving its onset and dynamics are still debated. Deciphering the physical…

It was recently proposed that the electron-frame dissipation measure, the energy transfer from the electromagnetic field to plasmas in the electron's rest frame, identifies the dissipation region of collisionless magnetic reconnection…

Solar and Stellar Astrophysics · Physics 2015-03-31 Seiji Zenitani , Michael Hesse , Alex Klimas , Carrie Black , Masha Kuznetsova

Hybrid-Vlasov-Maxwell simulations of magnetized plasma turbulence including non-linear electron-inertia effects in a generalized Ohm's law are presented. When fluctuation energy is injected on scales sufficiently close to ion-kinetic…

Plasma Physics · Physics 2020-07-20 F. Califano , S. S. Cerri , M. Faganello , D. Laveder , M. Sisti , M. W. Kunz

A concise review is given on the past two decades' results from laboratory experiments on collisionless magnetic reconnection in direct relation with space measurements, especially by Magnetospheric Multiscale (MMS) mission. Highlights…

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
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