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Motivated by the TeV-scale gravity scenarios, we study gravitationalradiation in the head-on collision of two black holes in higher dimensionalspacetimes using a close-limit approximation. We prepare time-symmetric initialdata sets for two black holes (the so-called Brill-Lindquist initial data) andnumerically evolve the spacetime in terms of a gauge invariant formulation forthe perturbation around the higher-dimensional Schwarzschild black holes. Thewaveform and radiated energy of gravitational waves emitted in the head-oncollision are clarified. Also, the complex frequencies of fundamentalquasinormal modes of higher-dimensional Schwarzschild black holes, which havenot been accurately derived so far, are determined.Comment: 27 pages, 8 figures, published versio

Close-limit analysis for head-on collision of two black holes in higher dimensions: Brill-Lindquist initial data