42 citations · 82 across the 17 of their papers we have counts for
19 papers
Energy, Passivity, and Diffusive Representations in Anisotropic Fractional Maxwell--Cole--Cole Media
Nikko John Leo S. Lobos
This study develops an energy formulation for linear anisotropic Maxwell--Cole--Cole media with multiple fractional polarization channels, passive conductivity, prescribed currents…
Scalar decoupling and critical-curve invariance in a reduced MOG black-hole theory
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
Linear perturbations of a Schwarzschild-MOG black hole separate into scalar and gravito-vector sectors in the reduced strong-field theory at leading order in . The f…
Fixed ADM reconstruction of extended uncertainty principle black holes
Nikko John Leo S. Lobos, Ali Övgün, Reggie C. Pantig
We study a phenomenological fixed-ADM prescription for an extended-uncertainty-principle (EUP) correction to the Schwarzschild exterior. Rather than treat mass constancy as a conse…
Two-branch detector response for Dirac infall into a Schwarzschild--MOG black hole
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
We study a localized spin- detector falling into a Schwarzschild--MOG black hole. The detector interacts with a neutral massless scalar field through a charge-preserving two-l…
Curvature-driven spin transport in rank-two string-Carroll hydrodynamics
Nikko John Leo Lobos, Reggie Pantig
We derive the rank-two string-Carroll limit of the canonical stress--spin Ward system for probe matter on a fixed torsion-free background. Beyond rank-one Carroll spin hydrodynamic…
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…
Photon sphere jet equivalence and the non-uniqueness of black-hole thermodynamics
Nikko John Leo S. Lobos, Emmanuel T. Rodulfo
We examine whether scalar eikonal quasinormal-mode data determine black-hole thermodynamics. For static, spherically symmetric, asymptotically flat, nonextremal geometries, we prov…
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…
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-…
Phenomenology of Rotating GEUP Black Holes
Nikko John Leo S. Lobos
We investigate the phenomenological implications of quantum gravity on rotating black holes within the framework of the Generalized Extended Uncertainty Principle (GEUP), which inc…
Constraining Lorentz Violation in Kalb-Ramond Gravity via Thermodynamics and Gravitational Wave Analysis
Nikko John Leo S. Lobos
We investigate the observational signatures of a static, spherically symmetric black hole embedded in a spontaneous Kalb-Ramond (KR) background. By normalizing the solution to the…
Exact Spectrum of a Curvature-Adapted Dunkl--Deng--Fan/Eckart System
Nikko John Leo S. Lobos
This study constructs and exactly solves a curvature-adapted radial Dunkl Hamiltonian for the coordinate-reflection group on 3D hyperbolic space, determining h…
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 as…
Analyzing Deflection Angles and Photon Sphere Dynamics of Magnetically Charged Black Holes in Nonlinear Electrodynamic
Hira Waseem, Nikko John Leo S. Lobos, Ali Övgün +1
In this paper, we investigate the gravitational lensing properties of magnetically charged black holes within the framework of nonlinear electrodynamics. We derive the deflection a…
Spacetime-curvature induced uncertainty principle: linking the large-structure global effects to the local black hole physics
Reggie C. Pantig, Gaetano Lambiase, Ali Övgün +1
This paper links the advanced formulation of the Generalized Uncertainty Principle, termed the Asymptotic Generalized Extended Uncertainty Principle (AGEUP), to the corpuscular fra…
Testing black holes with cosmological constant in Einstein-bumblebee gravity through the black hole shadow using EHT data and deflection angle
Reggie C. Pantig, Shubham Kala, Ali Övgün +1
This study probes spacetime solutions within Einstein-Bumblebee gravity, a modified gravitational framework incorporating spontaneous Lorentz symmetry violation through a vector fi…
Analyzing the effect of higher dimensions on the black hole silhouette, deflection angles, and PINN approximated quasinormal modes
Nikko John Leo S. Lobos, Anele M. Ncube, Reggie C. Pantig +1
This study investigates the effects of higher dimensions on the observable properties of Schwarzschild-Tangherlini black holes, focusing on the photonsphere, shadow radius, deflect…
Generalized Extended Uncertainty Principle Black Holes: Shadow and lensing in the macro- and microscopic realms
Nikko John Leo S. Lobos, Reggie C. Pantig
Motivated by the recent work about the Extended Uncertainty Principle (EUP) black holes \cite{Mureika:2018gxl}, we present in this study its extension called the Generalized Extend…