Reconstruction of Solar Activity During the Telescopic Era

  • J.M. Vaquero
Part of the Astrophysics and Space Science Library book series (ASSL, volume 361)

The secular evolution of solar activity and the Sun–Earth relationships have been important research topics of the scientific community throughout the last century. This whole type of investigation needed a variable that was able to provide information on the state of the Sun. For historical reasons, the variables used have depended fundamentally on the sunspots (number of groups of sunspots, Wolf number, sunspot area, etc.). Recently, because the Sun is now monitored practically using almost the whole electromagnetic spectrum and particle flux, the number of indices that give us information on the state of the Sun has increased considerably, although the time series are very short.


Solar Activity Solar Cycle Sunspot Number Sunspot Area Total Solar Irradiance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer-Verlag New York 2009

Authors and Affiliations

  • J.M. Vaquero
    • 1
  1. 1.Depto. FisicaUniversidad Extremadura Fac. CienciasSpain

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