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Localization phenomena in light scattering from random fluctuations of matterfields and spacetime metric near a black hole horizon were predicted to producea pronounced peak in the angular distribution of second harmonic light in thedirection normal to the horizon. Therefore, detection of second harmonicgeneration may become a viable observational tool to study spacetime physicsnear event horizons of astronomical black holes. The light localizationphenomena near the horizon may be facilitated by the existence of surfaceelectromagnetic wave solutions. In this communication we study such surfaceelectromagnetic wave solutions near the horizon of a Schwarzschild metricdescribing a black hole in vacuum. We demonstrate that such surface wavesolutions must appear when quantum gravity effects are taken into account.Potential observational evidence of this effect are also discussed.

Surface electromagnetic waves near a black hole event horizon and their observational consequences