İzzet Sakallı

Spin-(0, 1, 1 2) Field Perturbations, Quasinormal Modes, Overtones, Greybody Factors and Strong Cosmic Censorship of Einstein-Skyrme Black Holes

We study scalar, electromagnetic (EM) and Dirac perturbations of the four-dimensional Einstein-Skyrme (ES) black hole (BH), an asymptotically flat solution carrying a global-monopole solid-angle deficit, whose lapse [Formula: see text] is controlled by two independent inputs of t...

Geometric and wave optics analysis of BTZ-like charged wormholes with disclinations

We study the geometric and wave-optical properties of a charged BTZ wormhole (BTZCWH) spacetime carrying disclinations. The metric function \(f(r)=1-b_0/r-\mathcal {Q}^2 r^2/4\) has two positive zeros, an inner throat \(r_0\) and an outer zero \(r_*\) ; the static Lorentzian desc...