(Plenum Publishing Corporation, 1975-01-17) Chitre, S. M.; Narlikar, J. V.; Kapoor, R. C.
It is shown that a photon emitted in the forward direc-
tion by a charged particle moving in an equatorial cir-
cular orbit centred on a highly collapsed mass M, the
radius being slightly in excess of one and a half times
the Schwarzschild radius, is strongly blueshifted when
it arrives at a distant receiver. A ring shaped emit-
ting region composed of such orbiting particles has a
power law spectrum of the form d~/~ as seen by a distant
stationary observer.
