Abstract
We study the junction conditions for a nonspherical collapsing radiating star consisting of a shearing fluid undergoing radial heat flow with outgoing radiation. Radiation of the system is described by the plane symmetric version of the Vaidya solution. Junction conditions which match the collapse solutions to an exterior Vaidya metric show that, at the boundary, the pressure is proportional to the magnitude of the heat flow vector. Physical quantities, analogous to spherical symmetry related to the local conservation of momentum and surface redshift, are also obtained. Finally, exact gravitational collapse solutions, for both shear and shear-free cases, have been obtained by integrating a field equation.
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