scholarly journals Onset of collisionless magnetic reconnection in two-dimensional current sheets and formation of dipolarization fronts

2011 ◽  
Vol 116 (A12) ◽  
pp. n/a-n/a ◽  
Author(s):  
M. I. Sitnov ◽  
M. Swisdak
Keyword(s):  
Magnetic Reconnection ◽  
Two Dimensional ◽  
Current Sheets

Effect of plasma-β on the onset of plasmoid instability in Sweet–Parker current sheets

2014 ◽  
Vol 80 (5) ◽  
pp. 655-665 ◽  
Author(s):  
H. Baty
Keyword(s):  
Magnetic Reconnection ◽  
Temperature Increase ◽  
Numerical Study ◽  
Two Dimensional ◽  
Magnetic Island ◽  
Current Sheets ◽  
A Value ◽  
Similar Dependence ◽  
Definition Of ◽  
Local Temperature Increase

AbstractA numerical study of magnetic reconnection in two-dimensional resistive magnetohydrodynamics for Sweet–Parker current sheets that are subject to plasmoid instability is carried out. The effect of the initial upstream plasma-β on the critical Lundquist number Sc for the onset of plasmoid instability is studied. Our results indicate a weak dependence, with a value of Sc ≃ 1.5 × 104 in the limit of zero β, and a value of Sc ≃ 1 × 104 in the opposite high β regime (β ≫ 1). A similar dependence was previously obtained (Ni et al. 2012 Phys. Plasm. 19, 072902), but with a somewhat much larger variation, that can be largely attributed to the different configuration setup used in their study, and also to the definition of the Lundquist number. This conclusion does not depend significantly on the equilibrium used, i.e. both initial configurations with either plasma density or temperature spatial variations lead to very similar results. Finally, we show that the inner plasmoid structure appears as an under-dense hotted magnetic island, with a local temperature increase that is noticeably strengthened for low β cases.

Kinetic Alfvén Waves Excited in Two-Dimensional Magnetic Reconnection

2018 ◽  
Vol 123 (8) ◽  
pp. 6655-6669 ◽  
Author(s):  
Hongtao Huang ◽  
Yiqun Yu ◽  
Lei Dai ◽  
Tieyan Wang
Keyword(s):  
Magnetic Reconnection ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Two Dimensional ◽  
Kinetic Alfvén Waves

Manifestation of magnetic reconnection in coronal streamer current sheets

1994 ◽  
Vol 70 (1-2) ◽  
pp. 299-302 ◽  
Author(s):  
A. I. Verneta ◽  
E. Antonucci ◽  
D. Marocchi
Keyword(s):  
Magnetic Reconnection ◽  
Current Sheets ◽  
Coronal Streamer

scholarly journals Magnetic Reconnection with Sweet-Parker Characteristics in Two-dimensional Laboratory Plasmas

10.2172/3001 ◽  
1999 ◽  
Author(s):  
T. Carter ◽  
S. Hsu ◽  
H. Ji ◽  
R. Kulsrud ◽  
M. Yamada ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Two Dimensional ◽  
Laboratory Plasmas

scholarly journals Quasi-separatrix Layers Induced by Ballooning Instability in Near-Earth Magnetotail

2019 ◽  
Author(s):  
Ping Zhu ◽  
Zechen Wang ◽  
Jun Chen ◽  
Xingting Yan ◽  
Rui Liu
Keyword(s):  
Numerical Simulations ◽  
Magnetic Reconnection ◽  
Solar Physics ◽  
Close Correlation ◽  
Satellite Observations ◽  
Two Dimensional ◽  
3 Dimensional ◽  
Ballooning Instability ◽  
3D Geometry ◽  
Alternative Means

Abstract. Magnetic reconnection processes in the near-Earth magnetotail can be highly 3-dimensional (3D) in geometry and dynamics, even though the magnetotail configuration itself is nearly two dimensional due to the symmetry in the dusk-dawn direction. Such reconnection processes can be induced by the 3D dynamics of nonlinear ballooning instability. In this work, we explore the global 3D geometry of the reconnection process induced by ballooning instability in the near-Earth magnetotail by examining the distribution of quasi-separatrix layers associated with plasmoid formation in the entire 3D domain of magnetotail configuration, using an algorithm previously developed in context of solar physics. The 3D distribution of quasi-separatrix layers (QSLs) as well as their evolution directly follows the plasmoid formation during the nonlinear development of ballooning instability in both time and space. Such a close correlation demonstrates a strong coupling between the ballooning and the corresponding reconnection processes. It further confirms the intrinsic 3D nature of the ballooning-induced plasmoid formation and reconnection processes, in both geometry and dynamics. In addition, the reconstruction of the 3D QSL geometry may provide an alternative means for identifying the location and timing of 3D reconnection sites in magnetotail from both numerical simulations and satellite observations.

Unsteady magnetic reconnection in non-periodic multiple current sheets

1998 ◽  
Vol 43 (3) ◽  
pp. 245-249
Author(s):  
Yifan Liu ◽  
Xiaohu Wang ◽  
Huinan Zheng ◽  
Shui Wang
Keyword(s):  
Magnetic Reconnection ◽  
Current Sheets

Evolution of electron current sheets in collisionless magnetic reconnection

2015 ◽  
Vol 22 (10) ◽  
pp. 102110 ◽  
Author(s):  
Neeraj Jain ◽  
A. Surjalal Sharma
Keyword(s):  
Magnetic Reconnection ◽  
Electron Current ◽  
Current Sheets
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