A simple model for the solar cycle

Abstract:

A simple nonlinear model which describes the 11 -year solar cycle can be derived from the usual α - ω dynamo theory in the form of a Van der Pol equation. Solar activity displays also small-scale inter-cycle persistent stochastic oscillations with a Hurst exponent of the order of H ≃ 0.76 ± 0.01. The results obtained from the Van der Pol oscillator superimposed on a fractional Brownian motion which describes the stochastic fluctuations are presented.

Año de publicación:

2003

Keywords:

Fuente:

scopus