Authors: R N Mehta Neeraj Pant Dipo Mahto J S Jha
Publish Date: 2012/11/14
Volume: 343, Issue: 2, Pages: 653-660
Abstract
We present a well behaved class of charged analogue of MC Durgapal J Phys A Math Gen 152637 1982 solution This solution describes charged fluid balls with positively finite central pressure positively finite central density their ratio is less than one and causality condition is obeyed at the centre The outmarch of pressure density pressuredensity ratio and the adiabatic speed of sound is monotonically decreasing however the electric intensity is monotonically increasing in nature This solution gives us wide range of parameter for every positive value of n for which the solution is well behaved hence suitable for modeling of super dense stars Keeping in view of well behaved nature of this solution one new class of solution is being studied extensively Moreover this class of solution gives us wide range of constant K 0≤K≤22 for which the solution is well behaved hence suitable for modeling of super dense stars like strange quark stars neutron stars and pulsars For this class of solution the mass of a star is maximized with all degree of suitability compatible with quark stars neutron stars and pulsars By assuming the surface density ρ b =2×1014 g/cm3 like Brecher and Capocaso Nature 259377 1976 corresponding to K=0 with X=0235 the resulting well behaved model has the mass M=403M Θ radius r b =1953 km and moment of inertia I=1213×1046 g cm2 for K=15 with X=0235 the resulting well behaved model has the mass M=443M Θ radius r b =1804 km and moment of inertia I=1136×1046 g cm2 for K=22 with X=0235 the resulting well behaved model has the mass M=456M Θ radius r b =1730 km and moment of inertia I=1076×1046 g cm2 These values of masses and moment of inertia are found to be consistent with the crab pulsars
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