Investigation of the quasinormal modes of a Schwarzschild black hole by a new generalized approach

This paper introduces a new analytical approach for the calculation of Quasi Normal Modes (QNMs) of black holes. The proposed method employs the Rosen-Morse function, in order to find the approximated quasi-normal frequencies of Schwarzschild black hole. The presented method, compared with the previous related method, demonstrates to be a more precise approximation. The corrected modes based on this research, are claimed to be a generalized form of QNMs found by Posch-Teller function. The numerical results of the new approach are calculated and compared with the results obtained by Mashhoon method and numerical method.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.