Now showing items 1-9 of 9

    • Anisotropic stars in general relativity. 

      Chaisi, Mosa. (2004)
      In this thesis we seek new solutions to the anisotropic Einstein field equations which are important in the study of highly dense stellar structures. We first adopt the approach used by Maharaj & Maartens (1989) to obtain ...
    • 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, ...
    • On the status of the geodesic law in general relativity. 

      Nevin, Jennifer Margaret. (1998)
      The geodesic law for test particles is one of the fundamental principles of general relativity and is extensively used. It is thought to be a consequence of the field laws but no rigorous proof exists. This thesis is ...
    • Realistic charged stellar models 

      Komathiraj, Kalikkuddy. (2007)
      In this thesis we seek exact solutions to the isotropic Einstien-Maxwell system that model the interior of relativistic stars. The field equations are transformed to a simpler form using the transformation of Durgapal and ...
    • 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 ...