Non-adiabatic radiative collapse of a relativistic star under different initial conditions
Abstract
We examine the role of space-time geometry in the non-adiabatic collapse of a star dissipating energy in the form of radial heat flow, studying its evolution under different initial conditions. The collapse of a star with interior comprising of a homogeneous perfect fluid is compared with that of a star filled with inhomogeneous imperfect fluid with anisotropic pressure. Both the configurations are spherically symmetric, however, in the latter case, the physical space $t= constant$ of the configurations is assumed to be inhomogeneous endowed with spheroidal or pseudo-spheroidal geometry. It is observed that as long as the collapse is shear-free, its evolution depends only on the mass and size of the star at the onset of collapse.
- Publication:
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Pramana
- Pub Date:
- September 2012
- DOI:
- 10.1007/s12043-012-0323-4
- arXiv:
- arXiv:1206.6012
- Bibcode:
- 2012Prama..79..501S
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- To appear in Pramana- j. of physics