3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
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Contribution Poster (WITHDRAWN)
Speakers
- Dr. Usoskin ILYA
Primary authors
- Dr. Usoskin ILYA (Head of Cosmic Ray Station)
Co-authors
- Dr. Gennady KOVALTSOV (Ioffe Phys-tech. Institute, St.Petersburg, Russia)
- Dr. Katja ALANKO-HUOTARI (University of Oulu, Finland)
Abstract content
The Maunder minimum (1745-1715) is a special period of extremely quiet Sun with almost vanishing sunspots. On the other hand it is known from measurements of cosmogenic isotope 14C in tree-rings that cosmic rays were cyclicly modulated during that period, but with the dominant 22-year period. Using a numerical model including the drift effect of the wavy heliospheric current sheet we simulate cosmic ray modulation for the Maunder minimum conditions.