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Reconnection of Loops and Open Field Lines

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Presentation on theme: "Reconnection of Loops and Open Field Lines"— Presentation transcript:

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2 Reconnection of Loops and Open Field Lines

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7 Wang, J. -M. ,, J. Lean, and N. R. Sheeley, Jr
Wang, J.-M.,, J. Lean, and N. R. Sheeley, Jr., The long-term variation of the Sun’s open magnetic flux, Geophys. Res. Lett., 27, , 2000.

8 Heliospheric Current Sheet

9 Location of Current Sheet During Solar Cycle Sanderson et al. 2001.

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11 Interchange Reconnection

12 Diffusion through Reconnection
Recently reconnected fieldline, in motion

13 Transport Equation Open magnetic flux, Bopen
(the number of open field lines per unit of surface area) u is the convection velocity, e.g. due to differential rotation.

14 Diffusion Terms Diffusion due to convective motions: dh is the length of a lane; dt is the time for convection along dh. Diffusion due to reconnection with loops: is the mean squared loop length; t is the characteristic reconnection time; Bloop is the average magnetic field strength in loops. Diffusion due to reconnection in the canopy: kcanopyBopen


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