Breathing Spots in a Reaction-Diffusion System
D. Haim, G. Li, Q. Ouyang, W.D. McCormick, Harry L. Swinney, A. Hagberg, E. Meron
Abstract
A quasi-2-dimensional stationary spot in a disk-shaped chemical reactor is observed to bifurcate to an oscillating spot when a control parameter is increased beyond a critical value. Further increase of the control parameter leads to the collapse and disappearance of the spot. Analysis of a bistable activator-inhibitor model indicates that the observed behavior is a consequence of interaction of the front with the boundary near a parity breaking front bifurcation.