engleski

Magnetic Reconnection in Solar Flares

Various aspects of solar flares are considered in the framework of analytic solutions of the complete set of MHD equations describing the the 2.5-D Petchek's reconnection model. In particular, we compare the theoretical results with characteristics of two-ribbon flares since they provide spatially resolved measurements of various plasma parameters. We emphasize the evolutionary aspect of the process, focusing on the effects of the change of the current sheet length-to-width ratio, longitudinal-to-transversal field ratio, and the ambient value of the plasma-to-magnetic pressure ratio. These parameters determine the conditions for the onset of fast reconnection, the transition to turbulent reconnection regime, the spatial distribution of the density and temperature, and the efficiency of the particle acceleration.

solar flares ; reconnection

Rad je objavljen nakon prezentacije namijenjene opažačkom auditoriju na VIIth Hvar Astrophysical Colloquium, održanom u Hvaru, Hrvatska, 19.-25. IX. 2004.