Magnetic Activity Cycles on the Sun and Stars
Abstract
Cycles of magnetic activity on the Sun and stars are manifestations of a magnetic dynamo, which is one of the most interesting processes in solar/stellar astrophysics. Evolution of solar magnetic cycles is studied for several centuries including the nearly spotless Maunder minimum and recent super-active cycles, thanks to tremendous work of R. Wolf and his successors and later D. Hoyt and K. Schatten who complied sunspot record series. Magnetic cycles in stars are studied during few decades but they provide a large ensemble statistics due to a large number of studied stars. Here we review most recent achievements and findings in studies of solar/stellar magnetic cycles, such as determinism and chaos in the cyclicity, cycles during active phases and great minima, active longitudes and 'flip-flop' cycles, occurrence of great minima and super-active periods.
- Publication:
-
35th COSPAR Scientific Assembly
- Pub Date:
- 2004
- Bibcode:
- 2004cosp...35.1721U