The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 21 1 2021 05 22 Quasinormal modes of black holes in dRGT massive gravity ‎ under electromagnetic perturbations Quasinormal modes of black holes in dRGT massive gravity ‎ under electromagnetic perturbations 213 218 1688 10.47176/ijpr.21.1.01144 FA S H Hendi Department of Physics, School of Science, Shiraz University, Shiraz, Iran; ‎ Biruni Observatory, School of Science, Shiraz University, Shiraz, Iran 0000-0002-4444-6579 M Momennia Department of Physics, School of Science, Shiraz University, Shiraz, Iran; ‎ Biruni Observatory, School of Science, Shiraz University, Shiraz, Iran Journal Article 2020 10 24 Upon semi-analytical and numerical methods, the quasinormal frequencies of dRGT massive black holes under electromagnetic perturbation are calculated and the dynamical stability of these black holes is investigated. The effect of graviton’s mass on the frequencies is investigated and it is shown that the WKB approximation is valid not only for  but also only for low-mass gravitons. Upon semi-analytical and numerical methods, the quasinormal frequencies of dRGT massive black holes under electromagnetic perturbation are calculated and the dynamical stability of these black holes is investigated. The effect of graviton’s mass on the frequencies is investigated and it is shown that the WKB approximation is valid not only for  but also only for low-mass gravitons. https://ijpr.iut.ac.ir/article_1688_ae614c557843b1df326cb29c57225459.pdf