| Some Magnetized Bulk Viscous String Cosmological Models in Cylindrically Symmetric Inhomogeneous Universe with Variable ∧-Term |
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| 摘 要： | Some cylindrically symmetric inhomogeneous viscous fluid string cosmological models with magnetic field and cosmological term A varying with time are investigated. To get the deterministic solution, it has been assumed that the expansion （θ） in the model is proportional to the eigen value σ^11 of the shear tensor σ^ij. The value of cosmological constant for the model is found to be small and positive, which is supported by the results from recent supernovae Ia observations. The effect of bulk viscosity is to produce a change in perfect fluid and hence exhibits essential influence on the character of the solution. The physical and geometric properties of the models are also discussed in presence and absence of magnetic field.
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| 关 键 词： | 宇宙模型 粘性流体 非均匀 柱对称 字符串 磁化 中期 时间变化 |
Some Magnetized Bulk Viscous String Cosmological Models in Cylindrically Symmetric Inhomogeneous Universe with Variable ∧-Term |
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| Authors: | Anirudh Pradhan |
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| Institution: | Department of Mathematics, Hindu Post-graduate College, Zamania-232 331, Ghazipur, India |
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| Abstract: | string, inhomogeneous universe, cylindrical symmetry, variable cosmological term, bulk viscosity |
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| Keywords: | string inhomogeneous universe cylindrical symmetry variable cosmological term bulk viscosity |
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