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 filled with a homogeneous perfect fluid is compared with that of a star filled with inhomogeneous imperfect fluid under anisotropic pressure. Both the configurations are spherically symmetric. However, in the latter case, the physical space t = constant of the configurations endowed with spheroidal or pseudospheroidal geometry is assumed to be inhomogeneous. 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.
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SHARMA, R., TIKEKAR, R. Non-adiabatic radiative collapse of a relativistic star under different initial conditions. Pramana - J Phys 79, 501–509 (2012). https://doi.org/10.1007/s12043-012-0323-4
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DOI: https://doi.org/10.1007/s12043-012-0323-4