ANALYSIS OF SUNSPOT NUMBER FLUCTUATIONS

@article{Fanchiotti2004ANALYSISOS,
  title={ANALYSIS OF SUNSPOT NUMBER FLUCTUATIONS},
  author={H. Fanchiotti and Sergio J. Sciutto and C. A. Garc{\'i}a Canal and Carlos Hojvat},
  journal={Fractals},
  year={2004},
  volume={12},
  pages={405-411}
}
Monthly averages of the sunspot number visible on the sun, observed from 1749, Zurich Observatory, and from 1848 other observatories, have been analyzed. This time signal presents a frequency power spectra with a clear 1/fα behavior with α≃0.8±0.2. The well-known cycle of approximately 11 years, clearly present in the spectrum, does not produce a sensible distortion of that behavior. The eventual characterization of the sunspot time series as a fractal is analyzed by means of the detrended… 

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