Generation of Alfvén wave energy during magnetic reconnection in Hall MHD
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摘要
The effect of the reconnection rate on the generation of Alfvén wave energy is systematically investigated using Hall magnetohydrodynamics(MHD). It is well known that a decrease in magnetic energy is proportional to the reconnection rate. It is found that an instantaneous increase in Alfvén wave energy in unit Alfvén time is the square dependence on the reconnection rate. The converted Alfvén wave energy is strongly enhanced due to the large increase in the reconnection rate in Hall MHD. For solar-terrestrial plasmas, the maximum converted Alfvén wave energy in unit Alfvén time with the Hall effect can be over 50 times higher than that without the Hall effect during magnetic reconnection.
The effect of the reconnection rate on the generation of Alfvén wave energy is systematically investigated using Hall magnetohydrodynamics(MHD). It is well known that a decrease in magnetic energy is proportional to the reconnection rate. It is found that an instantaneous increase in Alfvén wave energy in unit Alfvén time is the square dependence on the reconnection rate. The converted Alfvén wave energy is strongly enhanced due to the large increase in the reconnection rate in Hall MHD. For solar-terrestrial plasmas, the maximum converted Alfvén wave energy in unit Alfvén time with the Hall effect can be over 50 times higher than that without the Hall effect during magnetic reconnection.
The effect of the reconnection rate on the generation of Alfvén wave energy is systematically investigated using Hall magnetohydrodynamics(MHD). It is well known that a decrease in magnetic energy is proportional to the reconnection rate. It is found that an instantaneous increase in Alfvén wave energy in unit Alfvén time is the square dependence on the reconnection rate. The converted Alfvén wave energy is strongly enhanced due to the large increase in the reconnection rate in Hall MHD. For solar-terrestrial plasmas, the maximum converted Alfvén wave energy in unit Alfvén time with the Hall effect can be over 50 times higher than that without the Hall effect during magnetic reconnection.
引文
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[31]Walen C 1944 Ark.Mat.Astron.Fys.30A 15
[32]Wang Y et al 2010 Phys.Rev.Lett.105 195007
[33]Zong Q G et al 2005 Geophys.Res.Lett.32 L01101
[34]Phan T D et al 2004 Ann.Geophys.22 2355
[35]Wu B H and Lee L C 2000 J.Geophys.Res.105 18377
[36]Sonnerup B U O et al 1981 J.Geophys.Res.86 10049
[37]Sonnerup B U O et al 1990 J.Geophys.Res.95 10541
[38]Ma Z W and Bhattacharjee A 2001 J.Geophys.Res.106 3773
[39]Zhang X et al 2011 Phys.Plasmas 18 092112
[40]Ma Z W,Wang L C and Li L J 2015 Phys.Plasmas 22 062104
[2]Lee L C and Wu B H 2000 Astrophys.J.535 1014
[3]Aschwanden M J 2001 Astrophys.J.56 01035
[4]Vaivads A,RetinòA and AndréM 2009 Plasma Phys.Control.Fusion 51 124016
[5]Ma Z W et al 2012 Phys.Plasmas 19 032904
[6]Bettarini L and lapenta G 2010 AIP Conf.Proc.1216 60
[7]Vekstein G E and Jain R 1998 Phys.Plasmas 5 1506
[8]Birn J and Hesse M 2010 Phys.Plasmas 17 012109
[9]Yamada M et al 2014 Nat.Commun.5 4774
[10]Ma Z W and Bhattacharjee A 1996 Geophys.Res.Lett.23 1673
[11]Huba J D and Rudakov L I 2004 Phys.Rev.Lett.93 175003
[12]Malyshkin L M 2008 Phys.Rev.Lett.101 225001
[13]Wang X,Bhattacharjee A and Ma Z W 2000 J.Geophys.Res.105 27633
[14]?ieroset M et al 2002 Phys.Rev.Lett.89 195001
[15]Huba J D 2005 Phys.Plasmas 12 012322
[16]Ren Y et al 2005 Phys.Rev.Lett.95 055003
[17]Brown M R,Cothran C D and Fung J 2006 Phys.Plasmas13 056503
[18]Xiao C J et al 2007 Geophys.Res.Lett.34 L01101
[19]Wang X,Bhattacharjee A and Ma Z W 2001 Phys.Rev.Lett.87 265003
[20]Wang X,Yang H A and Jin S P 2006 Phys.Plasmas 13060702
[21]Drake J F,Shay M A and Swisdak M 2008 Phys.Plasmas15 042306
[22]Le A et al 2010 Geophys.Res.Lett.37 L03106
[23]Bessho N and Bhattacharjee A 2005 Phys.Rev.Lett.95245001
[24]Fujimoto K 2006 Phys.Plasmas 13 072904
[25]Bhattacharjee A et al 2009 Phys.Plasmas 16 112102
[26]Huang Y M and Bhattacharjee A 2010 Phys.Plasmas 17062104
[27]Parker E 1957 J.Geophys.Res.62 509
[28]Sweet P A 1958 The neutral point theory of solar flares Electromagnetic Phenomena in Cosmic Physics ed B Lehnert(New York:Cambridge University Press)pp 123–39
[29]Ji H and Daughton W 2011 Phys.Plasmas 18 111207
[30]Wang L C et al 2015 Phys.Lett.A 379 2068
[31]Walen C 1944 Ark.Mat.Astron.Fys.30A 15
[32]Wang Y et al 2010 Phys.Rev.Lett.105 195007
[33]Zong Q G et al 2005 Geophys.Res.Lett.32 L01101
[34]Phan T D et al 2004 Ann.Geophys.22 2355
[35]Wu B H and Lee L C 2000 J.Geophys.Res.105 18377
[36]Sonnerup B U O et al 1981 J.Geophys.Res.86 10049
[37]Sonnerup B U O et al 1990 J.Geophys.Res.95 10541
[38]Ma Z W and Bhattacharjee A 2001 J.Geophys.Res.106 3773
[39]Zhang X et al 2011 Phys.Plasmas 18 092112
[40]Ma Z W,Wang L C and Li L J 2015 Phys.Plasmas 22 062104