Chitre, S. M.Narlikar, J. V.2012-03-092012-03-091976-01-15http://hdl.handle.net/11007/1125The astrophysical consequences of the blue-shifted radiation emitted in the forward direc- tion by a source moving in an equatorial orbit with radius slightly in excess of 1.5 times the Schwarzschild radius of a highly collapsed central object are examined with special reference to quasistellar objects.enAstrophysicalGravitational searchlightArticle