Bianchi type-I massive string magnetized barotropic perfect fluid cosmological model in bimetric theory

. Bianchi type-I massive string cosmological model for perfect fluid distribution in the presence of magnetic field is investigated in Rosen’s [ Gen. Relativ. Gravit . 4 , 435 (1973)] bimetric theory of gravitation. To obtain the deterministic model in terms of cosmic time, we have used the condition A = ( BC ) n , where n is a constant, between the metric potentials. The magnetic field is due to the electric current produced along the x -axis with infinite electrical conductivity. Some physical and geometrical properties of the exhibited model are discussed and studied.