Stochastic Relaxation Oscillator Model for the Solar Cycle

Details Stochastic Relaxation Oscillator Model for the Solar Cycle Stochastic Relaxation Oscillator Model for the Solar Cycle

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phrvl..85.5476m&link_type=abstract

Physical Review Letters, Volume 85, Issue 25, December 18, 2000, pp.5476-5479

Physics

17

Scientific paper

We perform a detailed analysis of the sunspot number time series to reconstruct the phase space of the underlying dynamical system. The features of this phase space allow us to describe the behavior of the solar cycle in terms of a simple relaxation oscillator in two dimensions. The absence of systematic self-crossings suggests that the complexity of the sunspot time series does not arise as a consequence of chaos. Instead, we show that it can be adequately modeled through the introduction of a stochastic fluctuation in one of the parameters of the dynamic equations.

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