How Does the Guide Field Affect the Asymmetry of Hall Magnetic and Electric Fields in Fast Magnetic Reconnection?
LAI Xiang-Sheng1 , ZHOU Meng1** , DENG Xiao-Hua1 , LI Tang-Mu1 , HUANG Shi-Yong2
1 Institute of Space Science and Technology, Nanchang University, Nanchang 3300312 School of Electronic and Information, Wuhan University, Wuhan 430072
Abstract ：Recent studies show that the out-of-plane quadrupolar magnetic field in fast magnetic reconnection is distorted in the presence of a guide field. It is asymmetric with respect to the current sheet. In this work, we analyze the spatial and amplitude asymmetries of the Hall magnetic field By and the Hall electric field Ez in reconnection with different guide fields by a series of 2.5-D particle-in-cell simulations. We derive the relation between the asymmetry of By and Ez and the guide field strength. In addition, by analyzing the different terms in the generalized ohm's law, we find that the electric field Ez is mainly balanced by the Hall term, and the amplitude asymmetry is mainly caused by the Hall effect.
收稿日期: 2014-12-03
出版日期: 2015-10-02
[1] Dungey J M 1961 Phys. Rev. Lett. 6 47 1957 J. Geophys. Res. 62 509 NASA Spec Publ. p 4252001 J. Geophys. Res. 106 3715 2001 J. Geophys. Res. 106 25961 2002 Geophys. Res. Lett. 29 1563 2001 J. Geophys. Res. 106 25929 2008 Phys. Plasmas 15 042306 2006 Phys. Plasmas 13 012309 2010 J. Geophys. Res. 115 A11208 2012 Phys. Plasmas 19 042902 2005 Geophys. Res. Lett. 32 L19105 2001 Nature 410 557 2001 Nature 412 414 2004 Phys. Plasmas 11 4102 2004 J. Geophys. Res. 109 A01220 2010 Phys. Rev. Lett. 104 205001 2012 J. Geophys. Res. 117 A07223 1992 Comput. Phys. Commun. 69 306 2014 J. Geophys. Res. 119 1541 2011 Chin. Sci. Bull. 56 48 2014 J. Geophys. Res. 119 798 2010 Phys. Plasmas 17 072306
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
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2015, Vol. 32 
