Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm43a1153l&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SM43A-1153
Astronomy and Astrophysics
Astronomy
2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
Results from investigating 3d reconnection of magnetic fields using the Geospace General Circulation Model (GGCM) [Raeder, JGR, 104, 1999] are presented. A single long run was done with IMF orientation varying from north to south for the purpose of the studying clock angle dependence of reconnection topology. At the start of the simulation the initial northward IMF conditions show evidence of dayside null-null separator reconnection [Lau and Finn, Astro. Journal, 350, 1990]. As the simulation progresses, a change in magnetic field topology occurs in which the two nulls migrate to the nightside (about 15 - 20 RE down the tail), where new nulls form. The nulls are tracked using Greene's algorithm [Greene, Comp. Phys., 98, 1992] and the time evolution of the magnetic field skeleton is visualized.
Dorelli John C.
Fogal T.
Larson David J.
Raeder Joachim
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