HR: 11:15h
AN: SH42B-04    [Abstracts]
TI: Large-scale Reconnection at the Dayside Magnetopause: Results from Global Simulations
AU: * Berchem, J
EM: jberchem@igpp.ucla.edu
AF: IGPP, UCLA, Los Angeles, CA 90095-1567, United States
AU: Richard, R
EM: rrichard@igpp.ucla.edu
AF: IGPP, UCLA, Los Angeles, CA 90095-1567, United States
AU: Dunlop, M
EM: m.dunlop@rl.ac.uk
AF: Rutherford Appleton Laboratory, Didcot, Oxon, OX11 0QX, United Kingdom
AU: Escoubet, C P
EM: Philippe.Escoubet@esa.int
AF: ESTEC, ESA, Noordwijk, 2200 AG, Netherlands
AU: Bosqued, J M
EM: jean-michel.bosqued@cesr.fr
AF: CESR, CNRS, Toulouse, 31000, France
AU: Reme, H
EM: henri.reme@cesr.fr
AF: CESR, CNRS, Toulouse, 31000, France
AU: Dandouras, I
EM: iannis.dandouras@cesr.fr
AF: CESR, CNRS, Toulouse, 31000, France
AU: Lucek, E
EM: e.lucek@imperial.ac.uk
AF: The Blackett Laboratory, Imperial College, London, SW7 2BZ, United Kingdom
AU: Carr, C
EM: c.m.carr@ic.ac.uk
AF: The Blackett Laboratory, Imperial College, London, SW7 2BZ, United Kingdom
AU: Pu, Z
EM: zypu@pku.edu.cn
AF: School of Earth and Space Sciences, Peking University, Beijing, 100871, China
AB: 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.
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2724 Magnetopause and boundary layers
DE: 2753 Numerical modeling
DE: 7807 Charged particle motion and acceleration
DE: 7835 Magnetic reconnection (2723, 7526)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Fall Meeting