697 citations · 1.9k across the 39 of their papers we have counts for
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The Maunder minimum (1645--1715) was indeed a Grand minimum: A reassessment of multiple datasets
Ilya G. Usoskin, Rainer Arlt, Eleanna Asvestari +13
Aims: Although the time of the Maunder minimum (1645--1715) is widely known as a period of extremely low solar activity, claims are still debated that solar activity during that pe…
Equivalence relations between the Cortie and Zurich sunspot group morphological classifications
V. M. S. Carrasco, L. Lefevre, J. M. Vaquero +1
Catalogues of sunspots have been available with useful information about sunspots or sunspot groups for approximately the last 150 years. However, the task of merging these catalog…
The sunspot observations by Rheita in 1642
Juan Manuel Gómez, José Manuel Vaquero
The correct interpretation of a fragment of Rheita about a sunspot observation in 1642 has crucial importance in estimating the amplitude of the solar cycle just before the Maunder…