3 papers
gr-qc2026
Bounds on the Lyapunov Exponent of Circular Null Orbits in -Dimensional Black-Hole Spacetimes
Anagha V., C. Fairoos, T. K. Safir
Unstable circular null orbits provide a geometric bridge between black-hole optics, photon rings, strong gravitational lensing, and the eikonal sector of quasinormal ringing. In fo…
gr-qc2026
Thermodynamics of Einstein-Gauss-Bonnet Black Holes under the Generalized Uncertainty Principle
Sasmita Kumari Pradhan, Jamima Gee Varghese, C. Fairoos
We explore the impact of the Generalized Uncertainty Principle (GUP) on the thermodynamics of five-dimensional Einstein-Gauss-Bonnet (EGB) black holes. A modified mass-temperature…
gr-qc2025
From Nonextremal to Extremal: Entropy of Reissner-Nordström and Kerr black holes Revisited
C. Fairoos, Chiranjeeb Singha
In this paper, we derive the entropy of Reissner-Nordström (RN) and Kerr black holes using the Hawking-Gibbons path integral method. We determine the periodicity of the Euclidean…