Original scientific paper
Cylindrically symmetric magnetized inhomogeneous string cosmological models of perfect fluid distribution with variable magnetic permeability
Ravi Prakash Singh
; Department of Physics, St., Andrew's College, Gorakhpur - 273 001, India
Lallan Yadav
; Department of Physics, D. D. U. Gorakhpur University, Gorakhpur-273 009, India
Abstract
A new class of cylindrically-symmetric magnetized inhomogeneous perfect-fluid string cosmological models with variable magnetic permeability is investigated. We assume that F12 is the only non-vanishing component of the electromagnetic field tensor Fij . The Maxwell’s equations show that F12 is the function of x alone, whereas the magnetic permeability ¯µ may be the function of both x and t. To get the deterministic solution, it has been assumed that the metric coefficients are separable in the form as A = f(x)ℓ(t), B = g(x)k(t), C = g(x)ν(t). Also, the Einstein field equations have been solved with string source in which magnetic field is absent. Some physical and geometric aspects of the models in the presence and absence of magnetic field are discussed.
Keywords
cosmic string; electromagnetic field; inhomogeneous universe; variable magnetic permeability
Hrčak ID:
304618
URI
Publication date:
1.11.2010.
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