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Magnetic reconnection in curved spacetime is studied by adopting a general relativistic magnetohydrodynamic model that retains collisionless effects for both electron-ion and pair plasmas. A simple generalization of the standard…

高能天体物理现象 · 物理学 2018-02-14 Luca Comisso , Felipe A. Asenjo

Magnetic reconnection, or the ability of the magnetic field lines that are frozen in plasma to change their topology, is a fundamental problem of magnetohydrodynamics (MHD). We briefly examine the problem starting with the well-known…

天体物理学 · 物理学 2009-11-07 A. Lazarian , J. Cho

Magnetic reconnection has long been known to be the most important mechanism as quick conversion of magnetic field energy into plasma kinetic energy. In addition, energy dissipation by reconnection has gained attention not only as a plasma…

高能天体物理现象 · 物理学 2023-04-12 Masahiro Hoshino

The magnetic reconnection process is analyzed for relativistic magnetohydrodynamical plasmas around rotating black holes. A simple generalization of the Sweet-Parker model is used as a first approximation to the problem. The reconnection…

高能天体物理现象 · 物理学 2017-02-03 Felipe A. Asenjo , Luca Comisso

We investigate the impact of turbulence on magnetic reconnection through high-resolution 3D magnetohydrodynamical (MHD) simulations, spanning Lundquist numbers from $S=10^3$ to $10^6$. Building on Lazarian and Vishniac's (1999) theory,…

等离子体物理 · 物理学 2025-10-02 Giovani H. Vicentin , Grzegorz Kowal , Elisabete M. de Gouveia Dal Pino , Alex Lazarian

Magnetic reconnection is thought to be the driver for many explosive phenomena in the universe. The energy release and particle acceleration during reconnection have been proposed as a mechanism for producing high-energy emissions and…

高能天体物理现象 · 物理学 2015-04-10 Fan Guo , Yi-Hsin Liu , William Daughton , Hui Li

Using the formulation of relativistic reconnection by Lyutikov & Uzdensky (2002) we estimate the upper possible rates of reconnection in pulsar winds using Bohm prescription for resistivity. We find that the velocity of plasma inflow into…

天体物理学 · 物理学 2007-05-23 Maxim Lyutikov

Plasma energization through magnetic reconnection in the magnetically-dominated regime featured by low plasma beta ($\beta = 8 \pi nkT_0/B^2 \ll 1$) and/or high magnetization ($\sigma = B^2/(4 \pi nmc^2) \gg 1$) is important in a series of…

高能天体物理现象 · 物理学 2016-05-25 Fan Guo , Hui Li , William Daughton , Xiaocan Li , Yi-Hsin Liu

We examine the effect of weak, small scale magnetic field structure on the rate of reconnection in a strongly magnetized plasma. This affects the rate of reconnection by reducing the transverse scale for reconnection flows, and by allowing…

天体物理学 · 物理学 2016-08-30 A. Lazarian , E. T. Vishniac

We numerically study magnetic reconnection on different spatial scales and at different heights in the weakly ionized plasma of the low solar atmosphere (around $300-800$~km above the solar surface) within a reactive 2.5 D multi-fluid…

太阳与恒星天体物理 · 物理学 2018-12-12 Lei Ni , Vyacheslav S. Lukin

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

For the first time to our knowledge, we demonstrate fast magnetic reconnection near a magnetic null point in a fluid model of collisionless pair plasma without resorting to the contrivance of anomalous resistivity. In particular, we…

等离子体物理 · 物理学 2010-10-04 E. Alec Johnson , James A. Rossmanith

Astrophysical observations suggest that magnetic reconnection in relativistic plasmas plays an important role in the acceleration of energetic particles. Modeling this accurately requires numerical schemes capable of addressing large scales…

等离子体物理 · 物理学 2025-09-16 K. M. Schoeffler , F. Bacchini , K. Kormann , B. Eichmann , M. E. Innocenti

While relativistic magnetic reconnection in pair plasmas has emerged in recent years as a candidate for the origin of radiation from extreme astrophysical environments, the corresponding subrelativistic pair plasma regime has remained less…

等离子体物理 · 物理学 2025-12-16 Adam Robbins , Anatoly Spitkovsky

As a fundamental process converting magnetic to plasma energy in high-energy astrophysical plasmas, relativistic magnetic reconnection is a leading explanation for the acceleration of particles to the ultrarelativistic energies necessary to…

高能天体物理现象 · 物理学 2017-07-26 Gregory R. Werner , Dmitri A. Uzdensky

Magnetic reconnection is the most likely mechanism responsible for the high temperature events that are observed in strongly magnetized locations around the temperature minimum in the low solar chromosphere. This work improves upon our…

太阳与恒星天体物理 · 物理学 2018-10-26 Lei Ni , Vyacheslav S. Lukin , Nicholas A. Murphy , Jun Lin

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…

高能天体物理现象 · 物理学 2013-02-15 A. Lazarian , Huirong Yan

The reconnection rate is obtained for the simplest case of 2D symmetric reconnection in an incompressible plasma. In the short note (Erkaev et al., Phys. Rev. Lett.,84, 1455 (2000)), the reconnection rate is found by matching the outer…

等离子体物理 · 物理学 2009-11-07 Nikolai V. Erkaev , Vladimir S. Semenov , Ilya V. Alexeev , Helfried K. Biernat

Magnetic reconnection has been intensively studied in fully ionized plasmas. However, plasmas are often partially ionized in astrophysical environments. The interactions between the neutral particles and ionized plasmas might strongly…

等离子体物理 · 物理学 2020-03-31 Lei Ni , Hantao Ji , Nicholas A. Murphy , Jonathan Jara-Almonte

Magnetic reconnection plays an essential role in the generation and evolution of astrophysical magnetic fields. The best tested and most robust reconnection theory is that of Parker and Sweet. According to this theory, the reconnection rate…

天体物理学 · 物理学 2009-11-07 Fabian Heitsch , Ellen G. Zweibel