There is currently no explanation of why the corona has the temperature and density it has. We present a model which explains how the dynamics of magnetic reconnection regulates the conditions in the corona. A bifurcation in magnetic reconnection at a critical state enforces an upper bound on the coronal temperature for a given density. We present observational evidence from 107 flares in 37 su...

There is reason to suspect that about half of the baryons are in pressure-supported plasma in the halos of normal galaxies, drawn in by gravity along with about half of the dark matter. To be consistent with the observations this baryonic component, the corona, would have to be hotter than the kinetic temperature of the dark matter in the halo so as to produce acceptable central electron densit...

Abstract Magnetic fields play a key role in driving broad range of dynamic phenomena the atmospheres Sun and other stars. Routine accurate measurements magnetic at all atmospheric layers are critical importance to understand these activities, but solar stellar coronae such measurement is still challenge due weak field strength high temperature. Recently, magnetic-field-induced transition (MIT) ...