Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm22a0798r&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM22A-0798
Physics
2724 Magnetopause, Cusp, And Boundary Layers, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
The four Cluster spacecraft crossed an isolated Flux Transfer Event (FTE) on January 26 th., 2001, at about 11:31 UT. Data from the FGM (flux-gate) are used to determine: (i) the shape of the FTE structure, by reference to a model, and its velocity, and (ii) the profile of the current density inside the FTE, by using the tri-axial flux-gate magnetometer implemented on the four Cluster s/c to compute J via curlB**. The validity of the estimate is discussed. Then the FTE is shown to be a force-free "tubular" structure; the current is anti-parallel to B, and it is maximum near the boundary of the FTE (hence the tubular structure). Higher frequency fluctuations observed from the search-coil on STAFF are shown to be driven unstable by this current. **Balogh et al., Space Science Reviews, 79, 1997.
Balogh André
Dunlop Malcolm W.
Glassmeier K.-
Robert Philippe
ROUX A. F.
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