Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm23d..07c&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM23D-07
Physics
2724 Magnetopause And Boundary Layers, 2731 Magnetosphere: Outer, 2740 Magnetospheric Configuration And Dynamics, 2753 Numerical Modeling
Scientific paper
We use three-dimensional MHD (magnetohydrodynamics) simulations to study the shape of the day side magnetopause under conditions of relatively large solar wind dynamic pressure (around or above 10nPa). Our MHD code is a finite-difference code accurate to second order in space and time and solves the MHD equations on a spherical coordinate grid. We produce a simulated magnetosphere by running the code in constant solar wind conditions and allow the solution to asymptotically approach a near-constant solution. The magnetopause shape is determined by locating the last closed field lines in the GSE x-y plane at various azimuthal angles. The subsolar radius of the magnetopause agrees well with published models. More extensive details on the shape of the magnetopause off the subsolar line will be reported. From the extent of the magnetopause on the equatorial flanks, we also estimate the dawn-to-dusk electric field potential across the magnetopause.
Cable Samuel
Lin Chang-Shou
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