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相关论文: Petschek-like Reconnection with Current-driven Ano…

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Magnetic reconnection is best known from observations of the Sun where it causes solar flares. Observations estimate the reconnection rate a small, but non-negligible fraction of the Alfv\'en speed, so-called fast reconnection. Until…

太阳与恒星天体物理 · 物理学 2017-02-15 Andrey Beresnyak

Using a recently developed analytical procedure, we determine the rate of magnetic reconnection in the "standard" model of eruptive solar flares. During the late phase, the neutral line is located near the lower tip of the reconnection…

太阳与恒星天体物理 · 物理学 2018-05-23 Terry G. Forbes , Daniel B. Seaton , Katharine K. Reeves

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 in an antiparallel uniform Harris current sheet equilibrium, which is initially perturbed by a region of enhanced resistivity limited in all three dimensions, is investigated through compressible magnetohydrodynamic…

天体物理学 · 物理学 2009-10-31 Joerg Schumacher , Bernhard Kliem , Norbert Seehafer

Using 2-dimensional (2D) magnetohydrodynamics (MHD) simulations, we show that Petschek-type magnetic reconnection can be induced using a simple resistivity gradient in the reconnection outflow direction, revealing the key ingredient of…

等离子体物理 · 物理学 2021-12-23 Shan-Chang Lin , Yi-Hsin Liu , Xiaocan Li

We investigate the large scale evolution of a relativistic magnetic reconnection in an electron-positron pair plasma by a relativistic two-fluid magnetohydrodynamic (MHD) code. We introduce an inter-species friction force as an effective…

高能天体物理现象 · 物理学 2014-11-18 Seiji Zenitani , Michael Hesse , Alex Klimas

Petschek-type time-dependent reconnection (TDR) and quasi-stationary reconnection (QSR) models are considered to understand reconnection outflow structures and the features of the associated locally generated turbulence in the solar wind.…

空间物理 · 物理学 2014-12-01 Z. Vörös , Y. L. Sasunov , V. S. Semenov , T. V. Zaqarashvili , R. Bruno , M. Khodachenko

Reconnection rate is found for the canonical simplest case of steady-state two-dimensional symmetric reconnection in an incompressible plasma by matching of outer Petschek solution and internal diffusion region solution. The reconnection…

等离子体物理 · 物理学 2007-05-23 Nikolai V. Erkaev , Vladimir S. Semenov , Ferdinand Jamitzky

We study magnetic reconnection events in a turbulent plasma within the two-fluid theory. By identifying the diffusive regions, we measure the reconnection rates as function of the conductivity and current sheet thickness. We have found that…

等离子体物理 · 物理学 2017-03-06 Nicola Offeddu , Miller Mendoza

Plasmoid-mediated reconnection plays a fundamental role in different solar atmospheric phenomena. Numerical reproduction of this process is therefore essential for developing robust solar models. Our goal is to assess plasmoid-mediated…

太阳与恒星天体物理 · 物理学 2024-03-13 Øystein Håvard Færder , Daniel Nóbrega-Siverio , Mats Carlsson

Magnetic reconnection is a process that changes magnetic field topology in highly conducting fluids. Within the standard Sweet-Parker model, this process would be too slow to explain observations (e.g. solar flares). In reality, the process…

星系天体物理 · 物理学 2017-04-05 Grzegorz Kowal , Diego A. Falceta-Gonçalves , Alex Lazarian , Ethan T. Vishniac

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

We present a new model for time evolution of fast magnetic reconnection in free space, which is characterized by self-similarity. Reconnection triggered by locally enhanced resistivity assumed at the center of the current sheet can…

天体物理学 · 物理学 2009-10-31 S. Nitta , S. Tanuma , K. Shibata , K. Maezawa

Magnetic reconnection is a fundamental mechanism of driving eruptive phenomena of different scales and may be coupled with turbulence as suggested by recent remote-sensing and in-situ observations. However, the specific physics behind the…

太阳与恒星天体物理 · 物理学 2025-04-08 Yulei Wang , Xin Cheng , Mingde Ding

We present a quantitative model of the magnetic energy stored and then released through magnetic reconnection for a flare on 26 Feb 2004. This flare, well observed by RHESSI and TRACE, shows evidence of non-thermal electrons only for a…

太阳与恒星天体物理 · 物理学 2011-06-21 D. W. Longcope , A. C. Des Jardins , T. Carranza-Fulmer , J. Qiu

Solar flares can release coronal magnetic energy explosively and may impact the safety of near-earth space environments. Their structures and properties on macroscale have been interpreted successfully by the generally-accepted…

太阳与恒星天体物理 · 物理学 2023-09-11 Yulei Wang , Xin Cheng , Mingde Ding , Zhaoyuan Liu , Jian Liu , Xiaojue Zhu

Aspects of solar flare dynamics, such as chromospheric evaporation and flare light-curves, have long been studied using one-dimensional models of plasma dynamics inside a static flare loop, subjected to some energy input. While extremely…

太阳与恒星天体物理 · 物理学 2015-11-11 Dana Longcope , Jim Klimchuk

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 is a fundamental mechanism in astrophysics. A common challenge in mimicking this process numerically in particular for the Sun is that the solar electrical resistivity is small compared to the diffusive effects caused…

太阳与恒星天体物理 · 物理学 2023-07-05 Øystein Håvard Færder , Daniel Nóbrega-Siverio , Mats Carlsson

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
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