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astro-ph.SR2022
Reconstruction of the Solar Activity from the Catalogs of the Zurich Observatory
Egor Illarionov, Rainer Arlt
Catalogs of the Zurich Observatory contain positional information on sunspots, prominences and faculae in late 19th and early 20th centuries. This database is given in handwritten…
astro-ph.SR2022★ 7 cited
Parametrization of sunspot groups based on machine learning approach
Egor Illarionov, Andrey Tlatov
Sunspot groups observed in white-light appear as complex structures. Analysis of these structures is usually based on simple morphological descriptors which capture only generic pr…