Mode stability on the real axis
Mode stability on the real axis
A generalization of the mode stability result of Whiting [J. Math. Phys. 30, 1301–1305 (1989)] for the Teukolsky equation is proved for the case of real frequencies. The main result of the paper states that a separated solution of the Teukolsky equation governing massless test fields on the Kerr spacetime, …