38 citations · 319 across the 22 of their papers we have counts for
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Penumbral brightening events observed in AR NOAA 12546
M. Murabito, S. L. Guglielmino, I. Ermolli +2
Penumbral transient brightening events have been attributed to magnetic reconnection episodes occurring in the low corona. We investigated the trigger mechanism of these events in…
Recovering the unsigned photospheric magnetic field from Ca II K observations
Theodosios Chatzistergos, Ilaria Ermolli, Sami K. Solanki +3
We reassess the relationship between the photospheric magnetic field strength and the Ca II K intensity for a variety of surface features as a function of the position on the disc…
Historical solar Ca II K observations at the Rome and Catania observatories
Theodosios Chatzistergos, Ilaria Ermolli, Mariachiara Falco +5
Here we present the little explored Ca II K archives from the Rome and the Catania observatories and analyse the digitised images from these archives to derive plage areas.