Flux transfer events in global numerical simulations of the magnetosphere

Details Flux transfer events in global numerical simulations of the magnetosphere Flux transfer events in global numerical simulations of the magnetosphere

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1048f&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 107, Issue A5, pp. SMP 1-1, CiteID 1048, DOI 10.1029/2001JA000025

Physics

Plasma Physics

13

Space Plasma Physics: Numerical Simulation Studies, Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Space Plasma Physics: Magnetic Reconnection

Scientific paper

A magnetohydrodynamic numerical simulation model is used to study nonsteady features of magnetic reconnection between southward interplanetary magnetic field (IMF) and the geomagnetic field. The magnetic field near the dayside magnetopause intermittently shows the bipolar normal magnetic field and field-aligned flow features that are similar to the observed flux transfer events. The results show that the magnetic signature extends outward into the magnetosheath and inward into the magnetosphere. The magnetic features are not steady, and they evolve as they propagate along the magnetopause. Magnetic field lines are traced from the magnetopause in order to show the connectivity of the field from the ionosphere to the solar wind. The results shown are consistent with Russell and Elphic's [1978] interpretation of the magnetic signals as evidence of nonsteady reconnection between the IMF and the geomagnetic field. Finally, we suggest a merging mechanism along the dayside magnetic null-null line that naturally leads to the observed magnetic structure.

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