Now showing items 1-8 of 8

    • Aspects of spherically symmetric cosmological models. 

      Moodley, Kavilan. (1998)
      In this thesis we consider spherically symmetric cosmological models when the shear is nonzero and also cases when the shear is vanishing. We investigate the role of the Emden-Fowler equation which governs the behaviour ...
    • Conformally invariant relativistic solutions. 

      Maharaj, M. S. (1993)
      The study of exact solutions to the Einstein and Einstein-Maxwell field equations, by imposing a symmetry requirement on the manifold, has been the subject of much recent research. In this thesis we consider specifically ...
    • Cosmological attractors and no-hair theorems. 

      Miritzis, John. (1996)
      Interest in the attracting property of de Sitter space-time has grown during the 'inflationary era' of cosmology. In this dissertation we discuss the more important attempts to prove the so called 'cosmic no-hair conjecture' ...
    • Cosmological models and the deceleration parameter. 

      Naidoo, Ramsamy. (1992)
      In this thesis we utilise a form for the Hubble constant first proposed by Berman (1983) to study a variety of cosmological models. In particular we investigate the Robertson-Walker spacetimes, the Bianchi I spacetime, ...
    • Exact models for radiating relativistic stars. 

      Rajah, Suryakumari Surversperi. (2007)
      In this thesis, we seek exact solutions for the interior of a radiating relativistic star undergoing gravitational collapse. The spherically symmetric interior spacetime, when matched with the exterior radiating Vaidya ...
    • Inhomogeneous solutions to the Einstein equations. 

      Govender, Gabriel. (2007)
      In this dissertation we consider spherically symmetric gravitational fields that arise in relativistic astrophysics and cosmology. We first present a general review of static spherically symmetric spacetimes. aand highlight ...
    • Spherically symmetric cosmological solutions. 

      Govender, Jagathesan. (1996)
      This thesis examines the role of shear in inhomogeneous spherically symmetric spacetimes in the field of general relativity. The Einstein field equations are derived for a perfect fluid source in comoving coordinates. ...
    • Spherically symmetric solutions in relativistic astrophysics. 

      John, Anslyn James. (2002)
      In this thesis we study classes of static spherically symmetric spacetimes admitting a perfect fluid source, electromagnetic fields and anisotropic pressures. Our intention is to generate exact solutions that model the ...