HAL : insu-00359676, version 1

DOI : 10.1029/2006GL028241

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Geophysical Research Letters 34, 3 (2007) L03106

TC1 and Cluster observation of an FTE on 4 January 2005: A close conjunction

J. Wang 1, M.W. Dunlop 2, Z. Pu 1, X. Zhou 1, X. Zhang 1, Y. Wei 3, S. Y. Fu 1, C. Xiao 4, A. N. Fazakerley 5, H. Laakso 6, M. G. Taylor 6, Y. Bogdanova 5, Frederic Pitout 7, J. A. Davies 2, Q. Zong 8, C. Shen 9, Z. Liu 9, C. Carr 10, C. Perry 2, H. Reme 11, I. Dandouras 11, P. Escoubet 6, C. J. Owen 5

(2007)

Observations of a Flux Transfer Event (FTE) signature at the dayside magnetopause are reported, which was consecutively observed on 4 January 2005 by both the Double Star/TC1 spacecraft and the Cluster quartet, while the spacecraft were traversing through the northern-dusk magnetopause. The event occurred as a magnetosheath FTE first at the Cluster spacecraft at about 07:13 UT on 4 January 2005 and crossed each of the others within 2 minutes. The spatial separations between the Cluster spacecraft were of the order of 200 km. The TC1 signature occurred about 108s after Cluster. All findings including magnetic fluxes, orientations and hot ion velocity distributions strongly suggest that Cluster and TC1 encountered the magnetosheath branch of the same flux tube at two different positions along its length and this is borne out by computation of the expected time delay. Four-spacecraft timing is used to obtain the velocity of FTE.

1 :	School of Earth and Space Sciences
	Peking University / Beijing
2 :	Space Science and Technology Department (Ral Space)
	STFC Rutherford Appleton Laboratory
3 :	Institute of Geology and Geophysics
	Chinese Academy of Science (CAS)
4 :	National Astronomical Observatories
	Chinese Academy of Science (CAS)
5 :	Mullard Space Science Laboratory
	University College of London (UCL)
6 :	Space Science Department
	ESTEC, ESA
7 :	Max-Planck-Institut für Extraterrestrische Physik (MPE)
	Max-Planck-Institut für extraterrestrische Physik
8 :	Center for Atmospheric Research
	University of Massachussetts Lowell
9 :	Key Laboratory for Space Weather
	Chinese Academy of Sciences – Center for Space Science and Applied Research
10 :	Space and Atmospheric Physics Group
	Imperial College London – Blackett Laboratory
11 :	Centre d'étude spatiale des rayonnements (CESR)
	CNRS : UMR5187 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

mots-clés : PLASMA ELECTRON – SOLAR-WIND – MAGNETOPAUSE – MAGNETOSPHERE – RECONNECTION – PERFORMANCE – INSTRUMENT – SPACECRAFT – EVENTS

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Contributeur : Béatrice Pibaret-Bourdon <>

Soumis le : Lundi 9 Février 2009, 10:47:13

Dernière modification le : Lundi 9 Février 2009, 10:47:13