Bifurcation of 3D Vector Field Topology in Magnetospheric Dynamics

Details Bifurcation of 3D Vector Field Topology in Magnetospheric Dynamics Bifurcation of 3D Vector Field Topology in Magnetospheric Dynamics

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm43a1218c&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM43A-1218

Mathematics

Logic

2723 Magnetic Reconnection (7526, 7835), 2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions, 2790 Substorms

Scientific paper

The 3D magnetospheric plasma flows and magnetic fields produced by global PIC simulations are often very complex and difficult to understand. In order to make sense of the vast amount of information that a vector field can carry, we present some important topological features and concepts that can be used to get a glimpse of _gwhat a vector field is doing_h. Field topology visualization is an important technique to represent the important aspects of the vector field topology. This technique has enabled space physicists to visualize the complex nature of magnetospheric dynamics globally. If we consider magnetic vector field depends on an additional parameter, the structure of the phase portrait (field topology) may transform as the value of this parameter evolves. This change is called bifurcation and brings the topology from stable state to another. We discuss how bifurcation occurs increasing IMF. We also discuss the structural stability of the magnetospheric dynamics.

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