reconnection - Plasma Physics at West Virginia University
reconnection - Plasma Physics at West Virginia University
reconnection - Plasma Physics at West Virginia University
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Solar Wind-Magnetospheric Coupling• A major goal of space we<strong>at</strong>her (and GEM!) research– Predicting geomagnetic activity from conditions in the solarwind• Long history (Newell et al., JGR, 2007)– By l<strong>at</strong>e 70s, it was thought to berel<strong>at</strong>ed to solar wind electric field– “Axford conjecture”: solarwind convection electricfield determines the <strong>reconnection</strong>electric field (Axford, Rev. Geophys., 1969)• Attempts to quantify thisstarted simple– Modern studies use observedd<strong>at</strong>a to fit to reasonable functionalforms and get a best fit• “Empirical” approach, promoted byB. McPherron in 2008(?) GEM Tutorial– Can achieve ~75% correl<strong>at</strong>ion!Newell et al., 200716
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