Browsing Department of Mathematics by Title

Browsing Department of Mathematics by Title

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  • The final outcome of dissipative collapse in the presence of Λ, PRAMANA 
    Thirukkanesh, S.; Moopanar, S.; Govender, M (journal of Physics, 2012)
    We investigate the role played by the cosmological constant during gravitational collapse of a radiating star with vanishing Weyl stresses in the interior. We highlight the role played by the cosmological constant during ...
  • Flame retardant polyamide fibres: The challenge of minimising flame retardant additive contents with added nanoclays 
    Horrocks, A. R.; Sitpalan, A.; Zhou, C.; Kandola, B. (Polymers, 2016)
    This work shows that halogen-free, flame retarded polyamide 6 (PA6), fabrics may be produced in which component fibres still have acceptable tensile properties and low levels (preferably ď10 wt %) of additives by ...
  • General relativistic model for mixed fluid sphere with equation of state 
    Ragel, F. C.; Thirukkanesh, S. (The European Physical Journal, 2019)
    We generate a general frame work to solve the Einstein system with an equation of state that describe static spherically symmetric anisotropic matter distribution in terms of a generating function. It is examined for a Van ...
  • Generalized isothermal models with strange equation of state 
    Thirukkanesh, S; Maharaj, S. D. (PRAMANA- journal of Physics, 2008)
    We consider the linear equation of state for matter distributions that may be applied to strange stars with quark matter. In our general approach the compact relativistic body allows for anisotropic pressures in the ...
  • Generating potentials via difference equations, 
    Maharaj, S. D.; Thirukkanesh, S (Mathematical Methods in the Applied Sciences, 2006)
    The condition for pressure isotropy, for spherically symmetric gravitational fields with charged and uncharged matter, is reduced to a recurrence equation with variable, rational coefficients. This difference equation is ...
  • Intervention of CIDA restore project for providing safe drinking water to the villages Palameenmadu and Puthukkudiyiruppu 
    Fernando, P. R.; Krishanthan, S. (2nd Conference of CIDA Restore Project, 2009)
    The water crisis is one of the most significant issues in Sri Lanka after the Tsunami inclusive of Batticaloa district. The people those who are living in the Batticaloa district especially in Tsunami affected areas are ...
  • Long-range magnetic order in CeRu2Al10 studied via muon spin relaxation and neutron diffraction 
    Khalyavin, D. D.; Hillier, A. D.; Adroja, D. T.; Strydom, A. M.; Manuel, P.; Chapon, L. C.; Peratheepan, P.; Night, K.; Deen, P.; Ritter, C.; Muro, Y.; Takabatake, T. (Physical Review, 2010)
    The low temperature state of CeRu2Al10 has been studied by neutron powder diffraction and muon spin relaxation (muSR). By combining both techniques, we prove that the transition occurring below T*~27K, which has been the ...
  • Magnetic and transport studies on Cr100-xIrx alloys Single crystal 
    Fernando, P. R.; Sheppard, C. J.; Prinsloo, A. R. E. (59th Annual Conference of the South African Institute of Physics, 2014)
    Abstract An investigation into the physical properties of Cr100-xIrx alloy single crystals, with x = 0.7, 1.5, 2.0 and 2.5, were previously used to determine the magnetic phase diagram of Cr100-xIrx alloy system around ...
  • Mixed potentials in radiative stellar collapse 
    Thirukkanesh, S.; Maharaj, S. D. (Journal of Mathematical Physics, 2010)
    We study the behaviour of a radiating star when the interior expanding, shearing fluid particles are traveling in geodesic motion. We demonstrate that it is possible to obtain new classes of exact solutions in terms of ...
  • New Classes of Charged Spheroidal Models 
    Thirukkanesh, S (Journal of Astrophysics, 2013)
    New classes of exact solutions to the Einstein-Maxwell system is found in closed form by assuming that the hypersurface t =constant is spheroidal. This is achieved by choosing a particular form for the electric field ...
  • The potential for ultrasound to improve nanoparticle dispersion and increase flame resistance in fibre-forming polymers 
    Horrocks, A. R.; Kandola, B.; Milnes, G. J.; Sitpalan, A.; Hadimani, R. L. (Journal of Polymer Degradation and Stability, 2012)
    The effects of exposing to ultrasound compounded melts of polypropylene (PP) and polyamide 6 (PA6) formulations comprising nanoclays both alone and in the presence of other flame retardants are explored in terms of their ...
  • Producing Lightweight Concrete Using Tobacco Wastes 
    Fernando, P. R.; Parvathakeethan, A.; Einon Mariya, V. (1st Conference of CIDA Restore Project, 2008)
    This study was carried out to determine the possibilities of using tobacco wastes in lightweight concrete production. The mixture combinations of materials such as tobacco waste, pumice, sand and cement were used to produce ...
  • Putative quantum criticality in the (Cr90Ir10)100-yVy alloy system 
    Fernando, P. R.; Prinsloo, A. R. E.; Sheppard, C. J.; Lodya, L. (Journal of Applied Physics, 2014)
    Quantum criticality (QC) in spin-density-wave antiferromagnetic Cr and Cr alloy systems is a topic of current interest. In the present study, V was used as a tuning parameter to drive the Néel transition temperature (TN) ...
  • Radiating fluid sphere immersed in an anisotropic atmosphere 
    Naidu, N. F; Govender, M; Thirukkanesh, S; Maharaj, S. D (General Relativity and Gravitation, 2017)
    We model a radiating star undergoing dissipative gravitational collapse in the form of radial heat flux. The exterior of the collapsing star is described by the generalised Vaidya solution representing a mixture of null ...
  • Radiating relativistic matter in geodesic motion 
    Thirukkanesh, S.; Maharaj, S. D. (Journal of Mathematical Physics, 2009)
    We study the gravitational behaviour of a spherically symmetric radiating star when the fluid particles are in geodesic motion. We transform the governing equation into a simpler form which allows for a general analytic ...
  • The role of the electromagnetic field in dissipative collapse 
    Thirukkanesh, S; Govender, M (International Journal of Modern Physics, 2013)
    In this paper, we investigate the effect of charge on the collapse of a radiating, shearing sphere. The junction conditions required for the smooth matching of a general spherically symmetric spacetime (in the absence of ...
  • Shearing radiative collapse with expansion and acceleration 
    Thirukkanesh, S.; Rajah, S. S.; Maharaj, S. D. (Journal of Mathematical Physics, 2012)
    We investigate the behaviour of a relativistic spherically symmetric radiative star with an accelerating, expanding and shearing interior matter distribution in the presence of anisotropic pressures. The junction condition ...
  • Some new static charged spheres 
    Maharaj, S. D.; Thirukkanesh, S. (Nonlinear Analysis- Real World Applications, 2009)
    We present new exact solutions for the Einstein-Maxwell system in static spherically symmetric interior spacetimes. For a particular form of the gravitational potentials and the electric field intensity, it is possible ...
  • Spherically symmetric static matter configurations with vanishing radial pressure 
    Thirukkanesh, S.; Govender, M; Lortan, D. B (International Journal of Modern Physics, 2015)
    We present a new family of spherically symmetric, static solutions of the Einstein field equations in isotropic, comoving coordinates. The radial pressure at each interior point of these models vanishes yet equilibrium is ...
  • Superconductivity and Quantum Criticality in Cr100-zOsz alloys 
    Fernando, P. R.; Sheppard, C. J.; Prinsloo, A. R. E. (Journal of Acta Physica Polonica A, 2016)
    The magnetic phase diagrams of Cr alloys with group-8 metals, such as Re and Ru, show interesting properties. These include quantum critical and superconducting behavior. In order to extend these investigations this ...

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