REGULAR AND WELL-BEHAVED RELATIVISTIC CHARGED SUPERDENSE STAR MODELS

A new class of charged superdense star models is obtained by using an electric intensity, which involves two parameters, K and n. The metric describing the model shares its metric potential g(44) with that of Durgapal's fourth solution.(1) The pressure-free surface is kept at the density 2 x 10(14) g/cm(3) and joins smoothly the Reissner-Nordstrom solution. The neutral solution is well-behaved for 0 < Ca(2) <= 0.2645, while its charge analogs are well-behaved for a wide range, 0 < K < 32, i.e. the pressure, density, pressure-density ratio and velocity of sound are monotonically decreasing and the electric intensity is monotonically increasing in nature for the given range of the parameter K. The maximum mass and the corresponding radius occupied by the neutral solution are 4.1826M(Theta) and 19.7120 km, respectively for Ca(2) = 0.2645, while the redshift at the center and at the surface are given by Z(0) = 1.6444 and Z(a) = 0.6538, respectively. For the charged solution, the maximum mass and radius are 6.3811M(Theta) and 19.1609 km, respectively for K = 1.4, n = 1 and Ca(2) = 0.5016, with the redshift at the center Z(0) = 3.7437 and at the surface Z(a) = 1.1038.