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A magnetic null geometry reconstructed from Cluster spacecraft observations
He, J. -S.1; Tu, C. -Y.1,11; Tian, H.1; Xiao, C. -J.; Wang, X. -G.2,3; Pu, Z. -Y.1; Ma, Z. -W.4; Dunlop, M. W.5; Zhao, H.2; Zhou, G. -P.2; Wang, J. -X.2; Fu, S. -Y.1; Liu, Z. -X.6; Zong, Q. -G.1,7; Glassmeier, K. -H.8; Reme, H.9; Dandouras, I.9; Escoubet, C. P.10
AbstractThis paper reports for the first time the identification of a magnetic structure around a magnetic null in a magnetic reconnection region in the magnetotail. Magnetic reconnection is one of the fundamental processes in astrophysical and solar-terrestrial plasmas. Though the concept of reconnection has been studied for many years, the process that really occurs has not been fully revealed by direct measurements. In particular, the lack of a description of three-dimensional (3-D) reconnecting magnetic field from observations makes the task more difficult. The Cluster spacecraft array provide an opportunity to reconstruct the 3-D magnetic reconnection structure based on magnetic field vectors simultaneously measured at four positions. The identification of this structure comes from a new method of analysis of in situ measurements proposed here. Applying a fitting model of 10 spherical harmonic functions and a Harris current sheet function, plus a constant field, we reconstruct a 3-D magnetic field configuration around the magnetic null in an reconnection event observed by Cluster in the geo-magnetotail.
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WOS IDWOS:000255830100002
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Document Type期刊论文
Affiliation1.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 10012, Peoples R China
3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
4.Zhejiang Univ, Ins Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China
5.Rutherford Appleton Lab, SSTD, Div Space Sci, Chilton OX11 00X, Oxon, England
6.Chinese Acad Sci, CSSAR, Beijing 100080, Peoples R China
7.Univ Massachusetts, Ctr Atmospher Res, Lowell, MA USA
8.Tech Univ Carolo Wilhelmina Braunschweig, IGEP, Braunschweig, Germany
9.Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France
10.Estec, ESA, Noordwijk, Netherlands
11.Peking Univ, Dept Geophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
He, J. -S.,Tu, C. -Y.,Tian, H.,et al. A magnetic null geometry reconstructed from Cluster spacecraft observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2008,113(A5).
APA He, J. -S..,Tu, C. -Y..,Tian, H..,Xiao, C. -J..,Wang, X. -G..,...&Escoubet, C. P..(2008).A magnetic null geometry reconstructed from Cluster spacecraft observations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,113(A5).
MLA He, J. -S.,et al."A magnetic null geometry reconstructed from Cluster spacecraft observations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 113.A5(2008).
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