Electromagnetic Brans-Dicke-Bianchi type-V solutions

We derive new solutions for the locally rotational-symmetric Bianchi type-V space-time in the Brans-Dicke theory of gravitation. The solutions represent anisotropic cosmological models filled with stiff matter and an electromagnetic null field, including the vacuum case. It is shown that the scalar field is dynamically an essential factor, since it influences the structure of the singularities and the expansion of the models.