55 citations · 69 across the 3 of their papers we have counts for
3 papers
Analysis of full-disc H alpha observations: Carrington maps and filament properties in 1909-2022
Theodosios Chatzistergos, Ilaria Ermolli, Dipankar Banerjee +14
Full disc observations of the Sun in the H line provide information about the solar chromosphere and in particular about the filaments, which are dark and elongated features tha…
Analysis of full disc Ca II K spectroheliograms III. Plage area composite series covering 1892-2019
Theodosios Chatzistergos, Ilaria Ermolli, Natalie A. Krivova +16
We derive the plage area evolution over the last 12 solar cycles employing data from all Ca II K archives available publicly in digital form known to us, including several as yet u…
Causes of Observed Long-Periodic Variations of the Polarization at Polar Regions of Jupiter
O. S. Shalygina, V. V. Korokhin, E. V. Shalygin +4
Data of 23-years of Jupiter polarimetric observations (1981- 2004) have been reprocessed using new improved technique. The data from other observers have been added to the analysis…