Resonance-like phenomena in arrays of Rossler oscillators under correlatedparametric fluctuations

The behavior of diffusively coupled Rossler oscillators parametrically pert urbed with an Ornstein-Uhlenbeck noise is analyzed in terms of the degree o f synchronization between the cells. A resonance-like behavior is found as a function of the noise correlation time, instead of the noise intensity as it occurs in the typical stochastic resonance. A power law scaling between the "optimum" correlation time with regard to synchronization and the dete rministic time scale of the oscillators has been obtained, with an exponent that depends on the coupling strength.