Quasinormal modes of gravitational perturbation around regular Bardeen black hole surrounded by quintessence
Mahamat SalehDepartment of Physics, Higher Teachers’ Training College, University of Maroua, P.O. Box 55, Maroua, CameroonBouetou Bouetou ThomasEcole Nationale Supérieure Polytechnique, University of Yaounde I, P.O. Box. 8390, Yaoundé, CameroonTimoléon Crépin KofanéDepartment of Physics, Faculty of Science, University of Yaounde I, P.O. Box. 812, Yaoundé, Cameroon
2018en
ABI
Аннотация
In this paper, Quasinormal modes of gravitational perturbation are investigated for the regular Bardeen black hole surrounded by quintessence. Considering the metric of the Bardeen spacetime surrounded by quintessence, we derived the perturbation equation for gravitational perturbation using Regge-Wheeler gauge. The third order Wentzel-Kramers-Brillouin (WKB) approximation method is used to evaluate quasinormal frequencies. Explicitly, the behaviors of the black hole potential and quasinormal modes were plotted. The results show that, due to the presence of quintessence, the gravitational perturbation around the black hole damps more slowly and oscillates more slowly.
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