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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 18, issue 4
Ann. Geophys., 18, 399–405, 2000
© European Geosciences Union 2000
Ann. Geophys., 18, 399–405, 2000
© European Geosciences Union 2000

  30 Apr 2000

30 Apr 2000

Can origin of the 2400-year cycle of solar activity be caused by solar inertial motion?

I. Charvátová I. Charvátová
  • Geophysical Institute AS CR, Boční II, 141 31 Praha 4, Czech Republic

Abstract. A solar activity cycle of about 2400 years has until now been of uncertain origin. Recent results indicate it is caused by solar inertial motion. First we describe the 178.7-year basic cycle of solar motion. The longer cycle, over an 8000 year interval, is found to average 2402.2 years. This corresponds to the Jupiter/Heliocentre/Barycentre alignments (9.8855 × 243). Within each cycle an exceptional segment of 370 years has been found characterized by a looping pattern by a trefoil or quasitrefoil geometry. Solar activity, evidenced by 14C tree-ring proxies, shows the same pattern. Solar motion is computable in advance, so this provides a basis for future predictive assessments. The next 370-year segment will occur between AD 2240 and 2610.

Key words: Solar physics (celestial mechanics)

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