Bianchi type-III magnetized cosmological model when the field of gravitation is governed by either a perfect fluid or cosmic string is investigated in Rosen’s  bimetric theory of gravitation. To complete determinate solution, the condition, viz., A=(BC)n, where n is a constant, between the metric potentials is used. We have assumed different equations of state for cosmic string  for the complete solution of the model. Some physical and geometrical properties of the exhibited model are discussed and studied.
Volume 95, 2021
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