Cycles of the magnetic activity of the Sun and solar-type stars and simulation of their fluxes

Details Cycles of the magnetic activity of the Sun and solar-type stars and simulation of their fluxes Cycles of the magnetic activity of the Sun and solar-type stars and simulation of their fluxes

2012-04-05

arxiv.org/abs/1204.1148v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

22 pages, 10 figures, 3 tables

Scientific paper

The application of the Wavelet analysis and Fourier analysis to the dataset of variations of radiation fluxes of solar-like stars and the Sun is examined. In case of the Sun the wavelet-analysis helped us to see a set of values of periods of cycles besides "11-year" cycle: the long-duration cycles of 22-year, 40-50 year and 100-120 year and short-duration cycles of 2-3,5 years and 1,3-year. We present a method of the chromospheric flux simulation using the 13 late-type stars, which have well-determined cyclic flux variations similar to the 11-year solar activity cycle. Our flux prediction is based on the chromospheric calcium emission time series measurements from the Mount Wilson Observatory and comparable solar dataset. We show that solar three - component modeling well explains the stellar chromospheric observations.

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