Multipoint observations of plasma emissions in key magnetospheric regions by the WHISPER instrument on board CLUSTER. - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2005

Multipoint observations of plasma emissions in key magnetospheric regions by the WHISPER instrument on board CLUSTER.

Résumé

Small scale plasma boundaries like the magnetopause, cusp, and tail current sheet … have been long recognised as key regions in the dynamic of planetary magnetospheres. Because of their intrinsic complexity and their fast evolution in space and time, they were difficult objects to investigate with single spacecraft. Numerical simulations have been widely used to provide a framework for interpreting the observations or for giving insights to plasma parameters out of range of space borne instruments, because of their limited time or/and spatial resolution. The Cluster mission, with its four identical spacecraft, provides for the first time access to the 3D observations of these key regions. The main purpose of this paper is to present some of the new multipoint observations of plasma waves mainly provided by the Whisper wave instrument on-board Cluster. These observations are mainly tracers of the electron dynamic, and they eventually raise the open questions for which numerical simulations can be used to complete the understanding of the regions. An example of multipoint wave signatures of a new structure observed close to the magnetopause by Whisper is given here.
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Dates et versions

hal-00153890 , version 1 (12-06-2007)

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  • HAL Id : hal-00153890 , version 1

Citer

P. Canu, Pierrette Décréau, N. Cornilleau-Wehrlin, D. Fontaine, M. Dunlop. Multipoint observations of plasma emissions in key magnetospheric regions by the WHISPER instrument on board CLUSTER.. 7th International School/Symposium for Space Simulation (ISSS-7 Proceedings), 2005, Kyoto, Japan. ⟨hal-00153890⟩
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