1303.3143 (S. C. Ulhoa)
S. C. Ulhoa
In this paper we investigate gravitational perturbations of regular black holes. Such systems are solutions of Einstein equations that do not have a singularity at the origin of the coordinate system. However they still have events horizons depending on the values of the characteristic parameters of the solutions. When a black hole is perturbed, it oscillates. It gives rise to damped vibrating modes which are known as quasinormal modes. It is calculated the quasinormal frequencies of regular black holes using the third order WKB approximation for gravitational perturbations. The results are presented in tables I, II, III and IV.
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http://arxiv.org/abs/1303.3143
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