Exponential amplification of waves in the gravitational field of ultrarelativistic rotating body

A. Vilenkin
1978 Physics Letters B  
Ihe possibility is demonstrated of generation or exponentially depending on time amplification of waves in the metric of an ultrarelativistic rotating body.
doi:10.1016/0370-2693(78)90027-8 fatcat:xhrdw6zacbgvron3hsygl5g2em