Assuming that the physical 3-spacet = const in a superdense star is spheroidal, a static spherically symmetric model based on an exact solution of Einstein’s equations is given which will permit… Expand

SummaryA star of mass M and radiusr0 is supposed to start radiating at timet0. The zone of radiation extends tor=r1 at a later instantt=t1. The energy tensor for the radiation zone, describing the… Expand

A star of mass M and radiusr 0 is supposed to start radiating at timet 0. The zone of radiation extends tor=r 1 at a later instantt=t 1. The energy tensor for the radiation zone, describing the… Expand

The energy tensor for a mixture of matter and outflowing radiation is derived, and a set of equations following from Einstein's field equations are written down whose solutions would represent… Expand

We give solutions of the Einstein-Maxwell equations describing the emission of charged null fluid from a spherically symmetric body. The electromagnetic field is parallel to the direction of energy… Expand

A RESULT recently given by Eisenhart1 suggests an interesting application in general relativity. According to it, we can choose co-ordinates in which a line element showing spherical symmetry would… Expand

A model of a charged fluid sphere undergoing gravitational contraction is constructed on the lines of the Oppenheimer-Snyder model of uncharged collapsing spheres.