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We investigate some locally rotationally symmetric (LRS) Bianchi type-III string cosmological model in the presence of bulk viscosity and magnetic field, where an equation of state <img style="width:41px;height:14px;" alt="" src="Edit_cf5bc9aa-30a9-443b-b4bf-54aa87044b76.bmp" width="42" height="11" /> and relation between metric potential <img style="width:69px;height:19px;" alt="" src="Edit_374a9a8e-21f8-4cda-a7e1-6affdcd31c1a.bmp" width="73" height="19" /> are considered. The solution describes a shearing and non-rotating model with big-bang start. In the absence of magnetic field it reduces to a string model with bulk viscosity, where the relation between the coefficient of bulk viscosity and the energy density is <img style="width:37px;height:25px;" alt="" src="Edit_1d0d4795-3290-4f8a-a55a-4433e4accbb4.bmp" width="42" height="29" /> for a = 0.

Cosmic String in Bianchi Type-III Space-Time with Bulk Viscosity and Magnetic Field