Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm12a..01o&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM12A-01
Physics
[2723] Magnetospheric Physics / Magnetic Reconnection, [2724] Magnetospheric Physics / Magnetopause And Boundary Layers
Scientific paper
We will present burst-mode observations by the THEMIS spacecraft at the dayside magnetopause and boundary layer. During its Dayside Phase, the THEMIS burst-mode is triggered by the encounter of the magnetopause, and full 3-D ion and distributions at 3-s resolution are transmitted to the ground. The high-resolution electron measurements allow the unambiguous determination of the field-line topology throughout the entire magnetopause/boundary layer crossings. In this presentation we will discuss how the boundary layer topology depends on the magnetic shear, and in particular whether the entire dayside magnetopause/boundary layer is on open field lines during high-shear conditions. The information on field-line topology could shed light on the solar wind entry mechanisms.
Angelopoulos Vassilis
Fujimoto Minoru
Glassmeier K.-
Larson Davin E.
McFadden James P.
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