Numerical evidence for universality in the relaxation dynamics of near-extremal Kerr–Newman black holes
The Ruppin Academic Center, Emeq Hefer, 40250, Israel
2 The Hadassah Institute, Jerusalem, 91010, Israel
* e-mail: firstname.lastname@example.org
Accepted: 10 December 2015
Published online: 22 December 2015
The coupled gravitational-electromagnetic quasinormal resonances of charged rotating Kerr–Newman black holes are explored. In particular, using the recently published numerical data of Dias et al. (Phys Rev Lett 114:151101, 2015), we show that the characteristic relaxation times of near-extremal Kerr–Newman black holes in the regime are described, to a very good degree of accuracy, by the simple universal relation (here , and are respectively the electric charge, horizon radius, and temperature of the Kerr–Newman black hole, and is the fundamental quasinormal resonance of the perturbed black-hole spacetime).
© The Author(s), 2015