Physics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3517s09m&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 17, CiteID L17S09
Physics
7
Magnetospheric Physics: Magnetopause And Boundary Layers, Magnetospheric Physics: Magnetic Reconnection (7526, 7835), Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Magnetospheric Physics: Field-Aligned Currents And Current Systems (2409)
Scientific paper
THEMIS observations at the sub-solar magnetopause reveal the structure of the low latitude boundary layer (LLBL) and magnetosheath boundary layer (MSBL) during northward IMF. Unlike previous single spacecraft observations of this region, four of the five THEMIS spacecraft were able to capture the transition of magnetosheath plasma with no electron heating to uni-directional heated electrons followed by bi-directional heated electrons, demonstrating that this electron structure is spatial. Furthermore, the sequence of these transitions shows that the bi-directional heated electrons appear at the outer edge of the weak magnetopause current sheet. Since heated magnetosheath electrons outside the magnetopause current layer are used as an indicator of lobe reconnection in the hemisphere radiating these electrons, reconnection in both lobes is observed before the flux tubes cross the magnetopause. In essence, these observations provide convincing evidence that the LLBL was formed by dual-lobe reconnection.
Angelopoulos Vassilis
Auster Uli
Carlson Carl W.
Glassmeier Karl-Heintz
McFadden James P.
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