Research Papers (JVN)

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Astrophysical applications of the gravitational searchlight
(Plenum Publishing Corporation, 1976-01-15) Chitre, S. M.; Narlikar, J. V.
The 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.
Blueshift and spectral features of the gravitational searchlight
(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.