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Two-Parameter Stochastic Resonance in a Model of the Photosensitive Belousov-Zhabotinsky Reaction in a Flow System

T. Amemiya, T. Ohmori, M. Nakaiwa, and T. Yamaguchi
[J. Phys. Chem. A, Vol. 102, pp. 4537-4542, 1998]

Stochastic resonance (SR) is shown in a two-parameter system, a model of the photosensitive Belousov-Zahabotinsky reaction in a flow system. Light flux and a flow rate are control parameters in a newly developed Oregonator-type model, and the oscillatory behavior of the system is the dynamical observable. Modulation of an excitable focal steady-state close to a Hopf bifurcation by a periodic signal in one parameter and noise in the other parameter is found to give rise to SR. The scenario and novel aspects of SR in this system are discussed.

Fig. 1

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