On a class of spherically symmetric perfect fluid distributions in non-comoving coordinates

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Abstract
The physical properties of an exact solution obtained in non-comoving coordinates are examined. This solution contains acceleration, expansion and shear. We give a sufficient condition for the pressure and the density to be positive and for the weak, strong and dominant energy conditions to be fulfilled. Moreover, the pressure gradient and the density gradient are both negative and equal. The sound speed is real, less than the speed of light and is decreasing outwards. The circumference and the mass function are increasing outwards and the mass function is positive.