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The Magnetic Structure of an Earthward-moving Flux Rope Observed by Cluster in the Near-tail : Volume 25, Issue 7 (30/07/2007)

By Zhang, Y. C.

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Book Id: WPLBN0004001522
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: The Magnetic Structure of an Earthward-moving Flux Rope Observed by Cluster in the Near-tail : Volume 25, Issue 7 (30/07/2007)  
Author: Zhang, Y. C.
Volume: Vol. 25, Issue 7
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Fazakerley, A., Réme, H., Shen, C., Liu, Z. X., Yao, L., Zhang, Y. C.,...Walsh, A. P. (2007). The Magnetic Structure of an Earthward-moving Flux Rope Observed by Cluster in the Near-tail : Volume 25, Issue 7 (30/07/2007). Retrieved from

Description: State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China. We investigate the magnetic structure of a small earthward-moving flux rope observed by Cluster in the near-Earth plasma sheet through application of the Grad-Shafranov (GS) technique to reconstruct the transverse magnetic field distribution perpendicular to the flux rope axis at X=−14.75 RE. We find that the principal axis of the flux rope lies approximately along the dawn-dusk direction and that the diameter of the flux rope is about 1.5 RE. There is a strong duskward core magnetic field in the center of the flux rope. According to the AE index, there is no obvious substorm associated with the magnetic flux rope. Recent studies indicate that the formation of the flux rope in the plasma sheet can be understood in terms of simultaneous reconnection at multiple X-line points in the near-tail. The distribution of the transverse magnetic field on the cross section is the asymmetric circles, which requires that the reconnections at multiple X-line points occur. So our results also provide additional evidence for the occurrence of multiple-X line reconnection in the magnetotail.

The magnetic structure of an earthward-moving flux rope observed by Cluster in the near-tail

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