The Hard Question - How do Reconnection Physics and Macroscale Dynamics Cooperate in Determining...
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Transcript of The Hard Question - How do Reconnection Physics and Macroscale Dynamics Cooperate in Determining...
The Hard Question -How do Reconnection Physics and Macroscale Dynamics Cooperate in
Determining Global System Behavior?
● For example, in the case of CMEs and substorms does rapid macroscale motion precede rapid reconnection or vice versa?
● In the case of the interaction between the solar wind and the magnetosphere is the transpolar voltage set by local reconnection physics or by a whole body interaction?
● Or do reconnection physics and macroscale dynamics interactively determine the outcome?
Hones substorm model
The community conceptual model of a substorm hasslow evolution leading to the onset of rapid reconnection
Time = 2:14 Time = 2:22 Time = 2:24
Triggered Substorm Using OpenGGCM at CCMC
What do macroscale MHD simulations say in this case?
Does rapid reconnection precede motion or vice versa?
Vice versa
Axford Conjecture
• Reconnection takes place at a rate determined by external boundary conditions.
• Examples: Dayside magnetopause reconnection CME reconnection (some models)