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In situ evidence for the structure of the magnetic null in a 3D reconnection event in the Earth'smagnetotail
Xiao, C. J.; Wang, X. G.; Pu, Z. Y.; Zhao, H.; Wang, J. X.; Ma, Z. W.; Fu, S. Y.; Kivelson, M. G.; Liu, Z. X.; Zong, Q. G.; Glassmeier, K. H.; Balogh, A.; Korth, A.; Reme, H.; Escoubet, C. P.
2006-07-01
Source PublicationNATURE PHYSICS
Volume2Issue:7Pages:478-483
AbstractMagnetic reconnection is one of the most important processes in astrophysical, space and laboratory plasmas. Identifying the structure around the point at which the magnetic field lines break and subsequently reform, known as the magnetic null point, is crucial to improving our understanding of reconnection. But owing to the inherently three-dimensional nature of this process, magnetic nulls are only detectable through measurements obtained simultaneously from at least four points in space. Using data collected by the four spacecraft of the Cluster constellation as they traversed a diffusion region in the Earth's magnetotail on 15 September 2001, we report here the first in situ evidence for the structure of an isolated magnetic null. The results indicate that it has a positive-spiral structure whose spatial extent is of the same order as the local ion inertial length scale, suggesting that the Hall effect could play an important role in 3D reconnection dynamics.
DOI10.1038/nphys342
Indexed BySCI
Language英语
WOS IDWOS:000239146900023
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8949
Collection太阳物理研究部
Affiliation1.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Dalian Univ Technol, State Key Lab Mat Modificat Laser Ion & Electron, Dalian 116024, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
5.Univ Calif Los Angeles, Dept Geophys & Planetary Phys, Los Angeles, CA 90024 USA
6.Chinese Acad Sci, CSSAR, Beijing 100080, Peoples R China
7.Univ Massachusetts Lowell, Ctr Atmospher Res, Lowell, MA 01854 USA
8.Tech Univ Carolo Wilhelmina Braunschweig, IGEP, D-3300 Braunschweig, Germany
9.Univ London Imperial Coll Sci Technol & Med, Dept Phys, London, England
10.MPI Solar Syst Res, Katlenburg Lindau, Germany
11.Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France
12.European Space Agcy, ESTEC, NL-2200 AG Noordwijk, Netherlands
Recommended Citation
GB/T 7714
Xiao, C. J.,Wang, X. G.,Pu, Z. Y.,et al. In situ evidence for the structure of the magnetic null in a 3D reconnection event in the Earth'smagnetotail[J]. NATURE PHYSICS,2006,2(7):478-483.
APA Xiao, C. J..,Wang, X. G..,Pu, Z. Y..,Zhao, H..,Wang, J. X..,...&Escoubet, C. P..(2006).In situ evidence for the structure of the magnetic null in a 3D reconnection event in the Earth'smagnetotail.NATURE PHYSICS,2(7),478-483.
MLA Xiao, C. J.,et al."In situ evidence for the structure of the magnetic null in a 3D reconnection event in the Earth'smagnetotail".NATURE PHYSICS 2.7(2006):478-483.
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