  The effective gravitational mass as well as the energy and momentum
distributions of a radiating charged particle in Einstein's universe are
evaluated. The Moller's energy-momentum complex is employed for this
computation. The spacetime under study is a generalization of Bonnor and Vaidya
spacetime in the sense that the metric is described in the cosmological
background of Einstein's universe in lieu of the flat background. Several
spacetimes are limiting cases of the one considered here. Particularly for the
Reissner-Nordstrom black hole background, our results are exactly the same with
those derived by Cohen and Gautreau using Whittaker's theorem and by Cohen and
de Felice using Komar's mass. Furthermore, the power output for the spacetime
under consideration is obtained.
