Large-scale Reconnection at the Dayside Magnetopause: Results from Global Simulations

Details Large-scale Reconnection at the Dayside Magnetopause: Results from Global Simulations Large-scale Reconnection at the Dayside Magnetopause: Results from Global Simulations

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh42b..04b&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH42B-04

Physics

2723 Magnetic Reconnection (7526, 7835), 2724 Magnetopause And Boundary Layers, 2753 Numerical Modeling, 7807 Charged Particle Motion And Acceleration, 7835 Magnetic Reconnection (2723, 7526)

Scientific paper

Measurements from multi-spacecraft mission offer a unique opportunity to investigate the large-scale topology and dynamics of magnetic reconnection at the dayside magnetosphere. Recent comparisons of 3D global magnetohydrodynamic (MHD) simulations with observations for the April 6, 2004 conjunction event between the Double Star (TC1) and Cluster spacecraft indicate that antiparallel merging at high latitudes and component merging in the subsolar region can occur simultaneously. To assess the relative contribution of each mechanism in the transfer of solar wind energy and mass to the magnetosphere, we use large-scale kinetic (LSK) calculations to compute a large sample of ion trajectories in the time-dependent MHD electric and magnetic fields. We determine the locations of the dayside magnetopause where ions gain significant amount of energy and compare them with the results of the global MHD simulations to reconstruct the topology of the merging region.

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