Eg. Kalnins et al., INTRINSIC CHARACTERIZATION OF THE SEPARATION CONSTANT FOR SPIN-ONE AND GRAVITATIONAL PERTURBATIONS IN KERR GEOMETRY, Proceedings - Royal Society. Mathematical, physical and engineering sciences, 452(1948), 1996, pp. 997-1006
In this article the characterization of the separation constant for th
e spin one and gravitational perturbations in Kerr geometry are given.
The characterization is given for the corresponding Hertz potentials
and induced for the corresponding vector and metric perturbations usin
g the results of Cohen and Kegeles.