Quasinormal modes of regular black holes with non linear-Electrodynamical sources

Understand

We compute the spectrum of quasinormal frequencies of regular black holes obtained in the presence of Non-Linear Electrodynamics.

• In particular, we perturb the black hole with a minimally coupled massive scalar field, and we study the corresponding perturbations adopting the 6th order WKB approximation.
• We analyze in detail the impact on the spectrum of the charge of the black hole, the quantum number of angular momentum and the overtone number.
• All modes are found to be stable.