New Light on an Old Problem of the Cores of Solar Resonance Lines
We reexamine a 50+ yr old problem of deep central reversals predicted for strong solar spectral lines, in contrast to the smaller reversals seen in observations. We examine data and calculations for the resonance lines of H I, Mg II, and Ca II, the self-reversed cores of which form in the upper chromosphere. Based on 3D simulations, as well as data
Judge, Philip G. et al.
Fecha de publicación:
9
2020