Aydın Tavlayan

E-mail

aydint@metu.edu.tr

Department

Department of Physics

ORCID

0000-0003-3119-7929

Scopus Author ID

57216784699

Web of Science Researcher ID

ABA-3660-2020

Instability and information production around Kerr black holes: effects on entropy and the shadow Tavlayan, Aydın; Tekin, Bayram (2025-11-01) Massless or massive particles in unstable orbits around a Kerr black hole exhibit exponentially unstable motion when perturbed. They either plunge into the black hole or escape to infinity after making some oscillations ar...
Partition function of a volume of space in a higher curvature theory Tavlayan, Aydın; Tekin, Bayram (2023-08-15) Recently, Jacobson and Visser [Partition Function for a Volume of Space, Phys. Rev. Lett. 130, 221501 (2023).PRLTAO0031-900710.1103/PhysRevLett.130.221501] calculated the quantum partition function of a fixed, finite volum...
Light rings around five dimensional stationary black holes and naked singularities Tavlayan, Aydın; Tekin, Bayram (2023-01-01) The existence of light rings in a spacetime is closely related to the existence of black hole horizons and observables such as the ringdown and the shadow. Black holes, compared to nonvacuum ultracompact objects, have rath...
Radii of spherical timelike orbits around Kerr black holes Tavlayan, Aydın; Tekin, Bayram (2021-12-01) We study the order ten polynomial equation satisfied by the radius of the spherical timelike orbits for a massive particle with a generic energy around a Kerr black hole. Even though the radii of the prograde and retrograd...
Exact formulas for spherical photon orbits around Kerr black holes Tavlayan, Aydın; Tekin, Bayram (American Physical Society (APS), 2020-11-01) Exact formulas relating the radii of the spherical photon orbits to the black hole's rotation parameter and the effective inclination angle of the orbit have been known only for equatorial and polar orbits up to now. Here ...
Event horizon detecting invariants Tavlayan, Aydın; Tekin, Bayram (American Physical Society (APS), 2020-04-14) Some judiciously chosen local curvature scalars can be used to invariantly characterize event horizons of black holes inD > 3 dimensions, but they fail for the three dimensional Banados-Teitelboim-Zanelli (BTZ) black hole ...

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