13 papers
Optical-area minimum method for static spherical black hole shadows
Vitalii Vertogradov, Nikko John Leo S. Lobos, Ali Ovgun +1
We formulate a global optical-area method for shadows of static, spherically symmetric black holes. For the metric \(ds^{2}=-A(r)dt^{2}+B(r)dr^{2}+C(r)dΩ^{2}\), spherical sections…
Eikonal Quality-Factor Parameterization of Model-Conditional Static Black-Hole Thermodynamics
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
We study how one complex quasinormal frequency can parameterize the geometry and model-conditional thermodynamics of a prescribed family of static, spherically symmetric black hole…
Breathing Black Hole Shadows in Modified Gravity (MOG)
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
In this paper, we investigate the dynamic phenomenological signatures of a Schwarzschild-MOG black hole shadow perturbed by passing gravitational waves. By perturbing the Hamilton-…
Shadow dependent phenomenology framework for rotating black hole metric
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
We establish a formal thermodynamic-optical duality that bridges the semiclassical quantum evaporation of black holes with their classical macroscopic geometry. The physical viabil…
Dynamical Black Hole Thermodynamics in Modified Gravity
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
We investigate the dynamical and thermodynamic evolution of a Schwarzschild black hole in Modified Gravity (MOG) perturbed by a scalar gravitational wave breathing mode. By evaluat…
Observational signatures of quantum-corrected RN blackhole
Nikko John Leo S. Lobos, Virginia C. Fernandez
We investigate the observational signatures of a quantum-corrected Reissner-Nordström (RN) black hole to constrain Planck-scale modifications to spacetime geometry using current a…