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We use the results of a three-dimensional kinetic simulation of an Harris current sheet to propose an explanation and to reproduce the ISEE-1/2, Geotail, and Cluster observations of the magnetotail current sheet structure. Current sheet…

Plasma Physics · Physics 2015-06-26 Paolo Ricci , Giovanni Lapenta , J. U. Brackbill

We present a new algorithm for the identification and physical characterization of current sheets and reconnection sites in 2D and 3D large scale relativisticmagnetohydrodynamic numerical simulations. This has been implemented in the PLUTO…

High Energy Astrophysical Phenomena · Physics 2023-05-29 Matteo Nurisso , Annalisa Celotti , Andrea Mignone , Gianluigi Bodo

In this paper, the temporal evolution of 3-dimensional relativistic current sheets in Poynting-dominated plasma is studied for the first time. Over the past few decades, a lot of efforts have been conducted on studying the evolution of…

High Energy Astrophysical Phenomena · Physics 2018-03-14 Makoto Takamoto

The processes controlling the complex clump structure, phase distribution, and magnetic field geometry that develops across a broad range of scales in the turbulent interstellar medium remains unclear. Using unprecedentedly high resolution…

Astrophysics of Galaxies · Physics 2024-05-01 Drummond B. Fielding , Bart Ripperda , Alexander A. Philippov

We are concerned with nonlinear stability and existence of two-dimensional current-vortex sheets in ideal compressible magnetohydrodynamics. This is a nonlinear hyperbolic initial-boundary value problem with characteristic free boundary. It…

Analysis of PDEs · Mathematics 2023-05-24 Alessandro Morando , Paolo Secchi , Paola Trebeschi , Difan Yuan

A new approach of using distributed transmission line analogy for solving transport equations for ballistic nanostructures is applied for solving the three dimensional problem of the electron transport in gated ballistic nanostructures with…

Mesoscale and Nanoscale Physics · Physics 2016-06-01 G. R. Aizin , J. Mikalopas , M. Shur

A fast-mode shock can form in the front of reconnection outflows and has been suggested as a promising site for particle acceleration in solar flares. Recent development of magnetic reconnection has shown that numerous plasmoids can be…

Solar and Stellar Astrophysics · Physics 2022-05-25 Xiangliang Kong , Fan Guo , Chengcai Shen , Bin Chen , Yao Chen , Joe Giacalone

The transient dynamics of a wake vortex, modelled as a strong swirling $q$-vortex, are investigated with a focus on optimal transient growth driven by continuous eigenmodes associated with continuous spectra. The pivotal contribution of…

Fluid Dynamics · Physics 2025-07-02 Sangjoon Lee , Philip S. Marcus

We provide a valid magnetohydrostatic equilibrium from the collapse of a 2D X-point in the presence of a finite plasma pressure, in which the current density is not simply concentrated in an infinitesimally thin, one-dimensional current…

Solar and Stellar Astrophysics · Physics 2013-09-13 Jorge Fuentes-Fernández , Clare E. Parnell , Alan W. Hood

A new current induced spin-torque transfer effect has been observed in a single ferromagnetic layer without resorting to multilayers. At a specific current density of one polarity injected from a point contact, abrupt resistance changes due…

Condensed Matter · Physics 2009-11-07 Y. Ji , C. L. Chien

Charged particles interacting with electromagnetic waves have a portion of their energy tied up in wave-driven oscillations. When these waves are localized to the exhaust of linear magnetic confinement systems this ponderomotive effect can…

Plasma Physics · Physics 2024-08-19 T. Rubin , I. E. Ochs , N. J. Fisch

In the MnSi bulk chiral magnet, magnetic skyrmion strings of 17 nm in diameter appear in the form of a lattice, penetrating the sample thickness, 10-1,000 um. Although such a bundle of skyrmion strings may exhibit complex soft-matter-like…

Strongly Correlated Electrons · Physics 2017-11-10 F. Kagawa , H. Oike , W. Koshibae , A. Kikkawa , Y. Okamura , Y. Taguchi , N. Nagaosa , Y. Tokura

Energy conversion via reconnecting current sheets is common in space and astrophysical plasmas. Frequently, current sheets disrupt at multiple reconnection sites, leading to the formation of plasmoid structures between sites, which might…

In this paper, we investigate the vacuum bosonic current density induced by a carrying-magnetic-flux cosmic string in a $(D+1)$-de Sitter spacetime considering the presence of two flat boundaries perpendicular to it. In this setup, the…

High Energy Physics - Theory · Physics 2024-12-05 W. Oliveira dos Santos , H. F. Santana Mota , E. R. Bezerra de Mello

A fundamental problem of forced magnetic reconnection has been solved taking into account the plasmoid instability of thin reconnecting current sheets. In this problem, the reconnection is driven by a small amplitude boundary perturbation…

Plasma Physics · Physics 2015-04-22 Luca Comisso , Daniela Grasso , François L. Waelbroeck

The current filamentation instability, which generically arises in the counterstreaming of supersonic plasma flows, is known for its ability to convert the free energy associated with anisotropic momentum distributions into kinetic-scale…

Plasma Physics · Physics 2022-03-14 Virginia Bresci , Laurent Gremillet , Martin Lemoine

We present a systematic analysis of statistical properties of turbulent current and vorticity structures at a given time using cluster analysis. The data stems from numerical simulations of decaying three-dimensional (3D)…

Fluid Dynamics · Physics 2013-05-29 Vadim M. Uritsky , Annick Pouquet , Duane Rosenberg , Pablo D. Mininni , Eric Donovan

Surface plasmons, free-electron collective oscillations in metallic nanostructures, provide abundant routes to manipulate light-electron interactions that can localize light energy and alter electromagnetic field distributions at…

Materials Science · Physics 2015-05-28 Ken-ichi Uchida , Hiroto Adachi , Daisuke Kikuchi , Shun Ito , Zhiyong Qiu , Sadamichi Maekawa , Eiji Saitoh

We provide a mathematical analysis and a numerical framework for Lorentz force electrical conductivity imaging. Ultrasonic vibration of a tissue in the presence of a static magnetic field induces an electrical current by the Lorentz force.…

Analysis of PDEs · Mathematics 2014-01-13 Habib Ammari , Pol Grasland-Mongrain , Pierre Millien , Laurent Seppecher , Jin-Keun Seo

We study instability of plasmons in a dual-grating-gate graphene field-effect transistor induced by dc current injection using self-consistent simulations with the Boltzmann equation. With only the acoustic-phonon-limited electron…

Mesoscale and Nanoscale Physics · Physics 2016-06-15 Y. Koseki , V. Ryzhii , T. Otsuji , V. V. Popov , A. Satou