Abstract
A new nonstationary rotating cosmological model is developed which describes the evolution of the observed Universe, since its properties are in good agreement with recent astronomical observations. It is demonstrated that the energy density of cosmological rotation can play a role of dark energy and induce the accelerated expansion of the Universe detected recently. In some situations when the causality parameter of the rotating cosmological model is negative, the cosmological rotational energy can be represented as phantom matter that violates the weak energy condition p + e ≥ 0. The suggested cosmological model has no initial singularity, that is, the cosmological rotation can prevent the formation of the singularity.
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