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Astronomy Letters

, Volume 33, Issue 5, pp 340–345 | Cite as

Solar cycles during the Maunder minimum

  • Yu. A. Nagovitsyn
Article

Abstract

We have obtained new consistent versions of the 400-yr time series of the Wolf sunspot number W, the sunspot group number G, and the total sunspot area S (or the total sunspot magnetic flux Φ). We show that the 11-yr cycle did not cease during the Maunder minimum of solar activity. The characteristics of the extrema of individual 11-yr cycles in 1600–2005 have been determined in terms of the total sunspot area index. We provide arguments for using alternating (“magnetic”) time series of indices in investigating the solar cyclicity.

Key words

Sun solar activity 

PACS numbers

96.60.qd 

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Copyright information

© Pleiades Publishing, Inc. 2007

Authors and Affiliations

  • Yu. A. Nagovitsyn
    • 1
  1. 1.Pulkovo Astronomical ObservatoryRussian Academy of SciencesSt. PetersburgRussia

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