  We investigate, in Randall-Sundrum braneworld scenario, the relationship
between perturbations of gravitational and electromagnetic waves in a black
hole neighboorhood, proposing an extra-dimensional braneworld extension of the
traditional formalism. Mutual transformations of electromagnetic and
gravitational fields due to the strong fields in Reissner-Nordstrom black holes
are analyzed from an effective 5-dimensional Randall-Sundrum braneworld
perspective.
