中文
相关论文

相关论文: A time-dependent model for magnetic reconnection i…

200 篇论文

Oscillatory reconnection is a process that has been suggested to underlie several solar and stellar phenomena, and is likely to play an important role in transient events such as flares. Quasi-periodic pulsations (QPPs) in flare emissions…

太阳与恒星天体物理 · 物理学 2022-06-01 J. Stewart , P. K. Browning , M. Gordovskyy

We performed numerical simulations of general relativistic magnetohydrodynamics with uniform resistivity to investigatethe occurrence of magnetic reconnection in a split-monopole magnetic field around a Schwarzschild black hole. We found…

高能天体物理现象 · 物理学 2019-10-09 Mika Inda-Koide , Shinji Koide , Ryogo Morino

The reversibility of the transfer of energy from the magnetic field to the surrounding plasma during magnetic reconnection is examined. Trajectories of test particles in an analytic model of the fields demonstrate that irreversibility is…

等离子体物理 · 物理学 2021-09-22 M. Xuan , M. Swisdak , J. F. Drake

We consider fast magnetic reconnection that takes place within turbulent magnetic flux and show that the process results in diffusion of magnetic fields and matter, which we term reconnection diffusion. The process of reconnection diffusion…

星系天体物理 · 物理学 2013-04-12 A. Lazarian

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…

We present a constructive numerical example of fast magnetic reconnection in a three dimensional periodic box. Reconnection is initiated by a strong, localized perturbation to the field lines. The solution is intrinsically three…

等离子体物理 · 物理学 2015-05-18 Bijia Pang , Ue-Li Pen , Ethan T. Vishniac

This work presents a more detailed analysis of the process of magnetic reconnection as promising ion beam accelerator mechanism with possible applications in laboratory plasmas and, more importantly, in the plasma propulsion field. In a…

等离子体物理 · 物理学 2018-08-15 Emanuele Cazzola , Davide Curreli , Giovanni Lapenta

The aim of this paper is to investigate the properties of magnetic reconnection at a 3D null point, with respect to their dependence on the symmetry of the magnetic field around the null. In particular we examine the rate of flux transport…

太阳与恒星天体物理 · 物理学 2015-05-14 A. K. Al-Hachami , D. I. Pontin

The role of null-point reconnection in a 3D numerical MHD model of solar emerging flux is investigated. The model consists of a twisted magnetic flux tube rising through a stratified convection zone and atmosphere to interact and reconnect…

太阳与恒星天体物理 · 物理学 2009-12-02 R. C. Maclean , C. E. Parnell , K. Galsgaard

The braiding of the solar coronal magnetic field via photospheric motions - with subsequent relaxation and magnetic reconnection -- is one of the most widely debated ideas of solar physics. We readdress the theory in the light of…

天体物理学 · 物理学 2011-02-11 A. L. Wilmot-Smith , G. Hornig , D. I. Pontin

The rate of magnetic reconnection is of the utmost importance in a variety of processes because it controls, for example, the rate energy is released in solar flares, the speed of the Dungey convection cycle in Earth's magnetosphere, and…

等离子体物理 · 物理学 2022-04-29 Yi-Hsin Liu , Paul Cassak , Xiaocan Li , Michael Hesse , Shan-Chang Lin , Kevin Genestreti

Magnetic reconnection before flux cancellation in the solar photosphere when two opposite-polarity photospheric magnetic fragments are approaching one another is usually modelled by assuming that a small so-called "floating current sheet"…

太阳与恒星天体物理 · 物理学 2024-10-16 Eric R. Priest , David I. Pontin

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

We present a model for the spontaneous onset of fast magnetic reconnection in a weakly collisional plasma, such as the solar corona. When a current layer of macroscopic width undergoes collisional (Sweet-Parker) reconnection, a narrow…

等离子体物理 · 物理学 2009-11-11 P. A. Cassak , J. F. Drake , M. A. Shay

On the Sun, Doppler shifts of bidirectional outflows from the magnetic-reconnection site have been found only in confined regions through spectroscopic observations. Without spatially resolved spectroscopic observations across an extended…

太阳与恒星天体物理 · 物理学 2022-11-21 Huidong Hu , Ying D. Liu , Lakshmi Pradeep Chitta , Hardi Peter , Mingde Ding

Magnetic reconnection plays a crucial role in violent energy conversion occurring in the environments of high electrical conductivity, such as the solar atmosphere, magnetosphere, and fusion devices. We focus on the morphological features…

天体物理学 · 物理学 2009-11-13 J. Lin , S. R. Cranmer , C. J. Farrugia

Magnetic reconnection in strongly magnetized regions around the temperature minimum region of the low solar atmosphere is studied by employing MHD-based simulations of a partially ionized plasma within a reactive 2.5D multi-fluid model. It…

太阳与恒星天体物理 · 物理学 2018-01-15 Lei Ni , Vyacheslav S. Lukin , Nicholas A. Murphy , Jun Lin

We study the process of magnetic field annihilation and reconnection in simulations of magnetised solar photosphere and chromosphere with magnetic fields of opposite polarities and constant numerical resistivity. Exact analytical solutions…

太阳与恒星天体物理 · 物理学 2018-12-12 S. Shelyag , Y. E. Litvinenko , V. Fedun , G. Verth , J. J. González-Avilés , F. S. Guzmán

We present the results of a set of three-dimensional numerical simulations of magnetic flux emergence from below the photosphere into the corona that include a uniform and horizontal coronal magnetic field mimicking a pre-existing…

天体物理学 · 物理学 2009-11-10 K. Galsgaard , F. Moreno-Insertis , V. Archontis , A. Hood

The discrete nature of the solar magnetic field as it emerges into the corona through the photosphere indicates that it exists as isolated flux tubes in the convection zone, and will remain as discrete flux tubes in the corona until it…

天体物理学 · 物理学 2009-11-10 M. G. Linton , S. K. Antiochos