Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2005-05-29
Int.J.Mod.Phys. D15 (2006) 405-418
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
18 pages including 4 *.eps figures. Submitted for publication
Scientific paper
10.1142/S0218271806008012
We calculate the maximum mass of the class of compact stars described by Vaidya-Tikekar \cite{VT01} model. The model permits a simple method of systematically fixing bounds on the maximum possible mass of cold compact stars with a given value of radius or central density or surface density. The relevant equations of state are also determined. Although simple, the model is capable of describing the general features of the recently observed very compact stars. For the calculation, no prior knowledge of the equation of state (EOS) is required. This is in contrast to the earlier calculations for maximum mass which were done by choosing first the relevant EOSs and using those to solve the TOV equation with appropriate boundary conditions. The bounds obtained by us are comparable and, in some cases, more restrictive than the earlier results.
Karmakar Subhajit
Mukherjee Soma
Sharma Rishi
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