158 citations · 651 across the 25 of their papers we have counts for
Showing 2014 · astro-ph.SRShow all
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astro-ph.SR2014★ 14 cited
A Note on the Relationship between Sunspot Numbers and Active Days
J. M. Vaquero, S. Gutiérrez-López, A. Szelecka
We have studied the relationship between three different versions of the sunspot number (Group, International and American sunspot number) and the number of active days (i.e., the…
astro-ph.SR2014★ 24 cited
Reconstructing Past Solar Activity using Meridian Solar Observations: the Case of the Royal Observatory of the Spanish Navy (1833-1840)
J. M. Vaquero, M. C. Gallego
Solar meridian observations have been used to evaluate the solar activity of the past. Some important examples are the solar meridian observations made at the Basilica of San Petro…