Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm53b..03b&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM53B-03
Physics
[2723] Magnetospheric Physics / Magnetic Reconnection, [2724] Magnetospheric Physics / Magnetopause And Boundary Layers, [2753] Magnetospheric Physics / Numerical Modeling
Scientific paper
We present the results of large-scale simulations of the entry and acceleration of ions at the magnetospheric boundary. The study is based on multipoint observations made during consecutive crossings of the cusps by the Cluster spacecraft. First, we use three-dimensional magnetohydrodynamic (MHD) simulations to follow the evolution of the global topology of the dayside magnetospheric boundary during the events. Subsequently, the time-dependent electric and magnetic fields predicted by the MHD simulations are utilized to compute the trajectories of large samples of solar wind ions launched upstream of the bow shock. We assess the results of the model by comparing Cluster ion measurements with ion dispersions calculated from the simulations along the spacecraft trajectories and discuss the temporal evolution and spatial distribution of precipitating particles in the context of the reconnection process at the dayside magnetopause.
Berchem Jean
Escoubet Christophe P.
Pitout Frederic
Richard Robert L.
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