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We investigate the low-frequency absorption cross section of theelectromagnetic waves for the extreme Reissner-Nordstrom black holes in higherdimensions. We first construct the exact solutions to the relevant waveequations in the zero-frequency limit. In most cases it is possible to usethese solutions to find the transmission coefficients of partial waves in thelow-frequency limit. We use these transmission coefficients to calculate thelow-frequency absorption cross section in five and six spacetime dimensions. Wefind that this cross section is dominated by the modes with l=2 in thespherical-harmonic expansion rather than those with l=1, as might have beenexpected, because of the mixing between the electromagnetic and gravitationalwaves. We also find an upper limit for the low-frequency absorption crosssection in dimensions higher than six.

Low-frequency absorption cross section of the electromagnetic waves for the extreme Reissner-Nordstrom black holes in higher dimensions