Properties of Field Aligned Current in Plasma Sheet Boundary Layers in Magnetotail: Cluster Observation

doi:10.1088/0256-307X/26/2/029401

Chin. Phys. Lett.

2009, Vol. 26

Issue (2): 029401 DOI: 10.1088/0256-307X/26/2/029401

GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS

Properties of Field Aligned Current in Plasma Sheet Boundary Layers in Magnetotail: Cluster Observation

SHI Jian-Kui¹, CHENG Zheng-Wei¹, T. L. Zhang², M. Dunlop³, LIU Zhen-Xing¹

¹State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190²Space Research Institute, Austrian Academy of Sciences, Graz, Austria³SSTD, Rutherford Appleton Laboratory, Chilton, Didcot, UK

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SHI Jian-Kui, CHENG Zheng-Wei, T. L. Zhang et al 2009 Chin. Phys. Lett. 26 029401

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Abstract Field aligned current (FAC) distribution in the plasma sheet boundary layers (PSBLs) in the magnetotail is studied statistically by analysing magnetic field data from the Cluster 4-point measurements. The results show that the FAC distribution on the dusk side is not the same as that on the dawn side in the magnetotail. On the each side earthward and tailward, FAC occurrences are different; occurrence and average current density of FACs in the northern hemisphere are different from those in the southern hemisphere. This implies that the FACs have dusk-dawn side asymmetry, polarity asymmetry and inter hemisphere difference in the magnetotail. The present results give a good observation evidence for study on the FAC mechanism.

Keywords: 94.20.Wh 94.20.Kj 94.30.Ej

Received: 04 November 2008 Published: 20 January 2009

PACS:	94.20.wh	(Ionosphere/magnetosphere interactions)
	94.20.Kj
	94.30.Ej

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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/2/029401 OR https://cpl.iphy.ac.cn/Y2009/V26/I2/029401

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	SHI Jian-Kui
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	T. L. Zhang
	M. Dunlop
	LIU Zhen-Xing

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