The Role of Magnetic Reconnection in Solar Dynamics and Heating

Abstract:

Magnetic reconnection plays an enormous role on the Sun, as it does in planetary magnetospheres. It is the fundamental mechanism underlying jets, flares, and coronal mass ejections, and it is largely responsible for maintaining the multi-million degree temperatures of the ambient corona. I will review magnetic reconnection on the Sun and point out similarities and differences with magnetospheric reconnection. Special emphasis will be given to the conditions for reconnection onset, since these determine the level of magnetic stress that is built up in the field and therefore the magnitude of explosive energy release.