Gm. Beskin et al., INVESTIGATION OF GAMMA-RAY BURST LIGHT CURVES IN DIFFERENT SPECTRAL RANGES BY MEANS OF GRAVITATIONAL LENSING, Nuclear physics. B, Proceedings supplement, 69(1-3), 1999, pp. 703-706
A foreground galaxy between a Gamma-Ray Burst (GRB) source and the obs
erver will produce the repetition of the observed transients by means
of gravitational lensing effect. The detection of the first repetition
will allow one to predict with good accuracy the time of the second r
epetition. A quantitative description of the phenomenon is given.