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Observation of magnetic reconnection at the turbulent leading edge of an interplanetary coronal mass ejection

Published online by Cambridge University Press:  27 June 2012

M. Faurobert ,
C. Fang ,
T. Corbard ,
A.C.-L. Chian  and
P.R. Muñoz
A.C.-L. Chian
Affiliation:
Observatoire de Paris, LESIA, CNRS, 92195 Meudon, France. e-mail: Abraham.Chian@obspm.fr National Institute for Space Research (INPE) and World Institute for Space Environment Research (WISER), São José dos Campos-SP 12227-010, Brazil Institute of Aeronautical Technology (ITA), São José dos Campos-SP 12228-900, Brazil; e-mail: pablocus@gmail.com
P.R. Muñoz
Affiliation:
Institute of Aeronautical Technology (ITA), São José dos Campos-SP 12228-900, Brazil; e-mail: pablocus@gmail.com
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Abstract

Magnetic Cloud Boundary Layer (MCBL) is formed by the interaction between a magnetic cloud ejected by the Sun and the ambient solar wind, which may be linked to the outer loops of an Interplanetary Coronal Mass Ejection (ICME) and often display the properties of magnetic reconnection. We study the relation between current sheets, turbulence, and magnetic reconnection at the leading edge of an ICME intercepted by the four Cluster spacecraft in the solar wind, upstream of the Earth’s bow shock, on 2005 January 21. We obtain the observational evidence of a fully-developed magnetic turbulence in the vicinity of two current sheets at the leading edge of ICME. Each current sheet shows the signatures of magnetic reconnections with oppositely propagating Alfven waves and jets. The current density of bifurcated current sheets is computed by the curlometer technique using multi-spacecraft data.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 55: 4th French-Chinese Meeting on Solar Physics - Understanding Solar Activity: Advances and Challenges , 2012 , pp. 327 - 334
Copyright
© EAS, EDP Sciences 2012

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