Abstract
It is shown that in the case of a spherical nonstatic fluid distribution undergoing shear-free motion the field equations in higher dimensional space-time can be reduced to a single second-order differential equation involving an arbitrary function of the radial co-ordinate. This result extends to higher dimensions a similar one obtained by Wyman and Faulkes earlier for 4D space-time. Solving this differential equation a number of new solutions is found, and the dynamical behaviour of one of the models is briefly discussed. The ansatz is later generalised to include the electromagnetic field as well.
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Banerjee, A., Dutta Choudhury, S.B. & Chatterjee, S. Nonstatic perfect fluid sphere in higher-dimensional space-time. Gen Relat Gravit 24, 991–999 (1992). https://doi.org/10.1007/BF00759129
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DOI: https://doi.org/10.1007/BF00759129