scholarly journals Electron acceleration in three-dimensional magnetic reconnection with a guide field

2015 ◽  
Vol 22 (10) ◽  
pp. 100704 ◽  
Author(s):  
J. T. Dahlin ◽  
J. F. Drake ◽  
M. Swisdak
Keyword(s):  
Magnetic Reconnection ◽  
Three Dimensional ◽  
Electron Acceleration ◽  
Guide Field

Three-dimensional modeling of electron quasiviscous dissipation in guide-field magnetic reconnection

2005 ◽  
Vol 12 (10) ◽  
pp. 100704 ◽  
Author(s):  
Michael Hesse ◽  
Masha Kuznetsova ◽  
Karl Schindler ◽  
Joachim Birn
Keyword(s):  
Magnetic Reconnection ◽  
Three Dimensional ◽  
Three Dimensional Modeling ◽  
Guide Field ◽  
Dimensional Modeling

scholarly journals Effects on magnetic reconnection of a density asymmetry across the current sheet

2008 ◽  
Vol 26 (8) ◽  
pp. 2471-2483 ◽  
Author(s):  
K. G. Tanaka ◽  
A. Retinò ◽  
Y. Asano ◽  
M. Fujimoto ◽  
I. Shinohara ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Magnetic Reconnection ◽  
Current Sheet ◽  
Three Dimensional ◽  
Flow Region ◽  
Electron Acceleration ◽  
Particle In Cell ◽  
Line Structure ◽  
Simulation Results

Abstract. The magnetopause (MP) reconnection is characterized by a density asymmetry across the current sheet. The asymmetry is expected to produce characteristic features in the reconnection layer. Here we present a comparison between the Cluster MP crossing reported by Retinò et al. (2006) and virtual observations in two-dimensional particle-in-cell simulation results. The simulation, which includes the density asymmetry but has zero guide field in the initial condition, has reproduced well the observed features as follows: (1) The prominent density dip region is detected at the separatrix region (SR) on the magnetospheric (MSP) side of the MP. (2) The intense electric field normal to the MP is pointing to the center of the MP at the location where the density dip is detected. (3) The ion bulk outflow due to the magnetic reconnection is seen to be biased towards the MSP side. (4) The out-of-plane magnetic field (the Hall magnetic field) has bipolar rather than quadrupolar structure, the latter of which is seen for a density symmetric case. The simulation also showed rich electron dynamics (formation of field-aligned beams) in the proximity of the separatrices, which was not fully resolved in the observations. Stepping beyond the simulation-observation comparison, we have also analyzed the electron acceleration and the field line structure in the simulation results. It is found that the bipolar Hall magnetic field structure is produced by the substantial drift of the reconnected field lines at the MSP SR due to the enhanced normal electric field. The field-aligned electrons at the same MSP SR are identified as the gun smokes of the electron acceleration in the close proximity of the X-line. We have also analyzed the X-line structure obtained in the simulation to find that the density asymmetry leads to a steep density gradient in the in-flow region, which may lead to a non-stationary behavior of the X-line when three-dimensional freedom is taken into account.

scholarly journals Three dimensional density cavities in guide field collisionless magnetic reconnection

2012 ◽  
Vol 19 (3) ◽  
pp. 032119 ◽  
Author(s):  
S. Markidis ◽  
G. Lapenta ◽  
A. Divin ◽  
M. Goldman ◽  
D. Newman ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Three Dimensional ◽  
Guide Field
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