TITLE:
Spherical Gravitational Collapse of Anisotropic Radiating Fluid Sphere
AUTHORS:
B. C. Tewari, Kali Charan, Jyoti Rani
KEYWORDS:
Exact Solutions, Anisotropic Fluid, Spherical Gravitational Collapse, Black Hole
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.6 No.2,
May
18,
2016
ABSTRACT: We here present a
relativistic model for a spherically symmetric anisotropic fluid to study the
various factors of physical and thermal phenomenon during the evolution of a
collapsing star dissipating energy in the form of radial heat flow. We also
proposed a table of some new parametric class of solutions which will be useful
for constructing the new compact star models. The constructed algorithm obeys
all the relevant requirements of a realistic model and matched with Vaidya
exterior metric over the boundary. At the initial stage the interior solutions
represent a static configuration of perfect fluid which then gradually starts
evolving into radiating collapse. The apparent luminosity as observed by the
distant observer at rest at infinity and the effective surface temperature are
zero in remote past at the instant when collapse begins and at the stage when
collapsing configuration reaches the horizon of the black hole.