Stochastic Fermi Energization of Coronal Plasma during Explosive Magnetic Energy Release

This important cartoon aims at linking the power of stochastic acceleration imagined to come from "Alfvénic scatterers" AS, with large-scale field structures. These AS seem to be called UCS (for Unstable Current Sheets) in a more ordinary Vlahos cartoon. Here the red dots are the scatterers, however initialized, and the left panel shows a large-scale restructuring of the sort that might do the trick. Note that the authors hedge their bets - if the looptop does not contain enough particles, which seems likely, then one can always turn to the footpoints.