Search Results - "Villanueva, J. R."

Study of null and time-like geodesics in the exterior of a Schwarzschild black hole with quintessence and cloud of strings by Fathi, Mohsen, Olivares, Marco, Villanueva, J. R.

“…Recently, an analytical study of radial and circular orbits for null and time-like geodesics that propagate in the spacetime produced by a Schwarzschild black…”
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Analytical study of light ray trajectories in Kerr spacetime in the presence of an inhomogeneous anisotropic plasma by Fathi, Mohsen, Olivares, Marco, Villanueva, J. R.

“…We calculate the exact solutions to the equations of motion that govern the light ray trajectories as they travel in a Kerr black hole’s exterior that is…”
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Motion of massive particles around a charged Weyl black hole and the geodetic precession of orbiting gyroscopes by Fathi, Mohsen, Kariminezhaddahka, Mona, Olivares, Marco, Villanueva, J. R.

“…The advanced state of cosmological observations constantly tests the alternative theories of gravity that originate from Einstein’s theory. However, this is…”
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Classical tests on a charged Weyl black hole: bending of light, Shapiro delay and Sagnac effect by Fathi, Mohsen, Olivares, Marco, Villanueva, J. R.

“…In this paper, we apply the classical test of general relativity on a charged Weyl black hole, the exterior geometry of which is defined by altering the…”
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Null paths on a toroidal topological black hole in conformal Weyl gravity by Villanueva, J. R., Tapia, Francisco, Molina, Martín, Olivares, Marco

“…The motion of massless particles on the background of a toroidal topological black hole is analyzed in the context of conformal Weyl gravity. Null geodesics,…”
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Adiabatic analysis of the rotating BTZ black hole by Fathi, Mohsen, Lepe, Samuel, Villanueva, J. R.

“…In this paper we analyze some interesting features of the thermodynamics of the rotating BTZ black hole from the Carathéodory axiomatic postulate, for which,…”
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Photon spheres in Einstein and Einstein-Gauss-Bonnet theories and circular null geodesics in axially-symmetric spacetimes by Gallo, Emanuel, Villanueva, J. R.

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Probing the parameters of a Schwarzschild black hole surrounded by quintessence and cloud of strings through four standard astrophysical tests by Cárdenas, Víctor H., Fathi, Mohsen, Olivares, Marco, Villanueva, J. R.

“…In this paper, we concern about applying general relativistic tests on the spacetime produced by a static black hole associated with cloud of strings, in a…”
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Random fractional generalized Airy differential equations: A probabilistic analysis using mean square calculus by Burgos, C., Cortés, J.-C., Debbouche, A., Villafuerte, L., Villanueva, R.-J.

“…The aim of this paper is to study a generalization of fractional Airy differential equations whose input data (coefficient and initial conditions) are random…”
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Null geodesics in five-dimensional Reissner–Nordström anti-de Sitter black holes by González, P. A., Olivares, Marco, Vásquez, Yerko, Villanueva, J. R.

“…The study of the motion of photons around massive bodies is one of the most useful tools to find the geodesic structure associated with said gravitational…”
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Uncertainty quantification analysis of the biological Gompertz model subject to random fluctuations in all its parameters by Bevia, V., Burgos, C., Cortés, J.-C., Navarro-Quiles, A., Villanueva, R.-J.

“…In spite of its simple formulation via a nonlinear differential equation, the Gompertz model has been widely applied to describe the dynamics of biological and…”
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Time like geodesics for five-dimensional Schwarzschild and Reissner–Nordström anti-de Sitter black holes by González, P. A., Olivares, Marco, Vásquez, Yerko, Villanueva, J. R.

“…The time like structure of the five-dimensional Schwarzschild and Reissner–Nordström anti-de Sitter black holes is studied in detail. Different kinds of motion…”
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The golden ratio in Schwarzschild–Kottler black holes by Cruz, Norman, Olivares, Marco, Villanueva, J. R.

“…In this paper we show that the golden ratio is present in the Schwarzschild–Kottler metric. For null geodesics with maximal radial acceleration, the turning…”
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Extending the deterministic Riemann–Liouville and Caputo operators to the random framework: A mean square approach with applications to solve random fractional differential equations by Burgos, C., Cortés, J.-C., Villafuerte, L., Villanueva, R.-J.

“…This paper extends both the deterministic fractional Riemann–Liouville integral and the Caputo fractional derivative to the random framework using the mean…”
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Reconstruction of a kinetic k-essence Lagrangian from a modified of dark energy equation of state by Cárdenas, Víctor H., Cruz, Norman, Muñoz, Sebastian, Villanueva, J. R.

“…In this paper the Lagrangian density of a purely kinetic k-essence model that describes the behavior of dark energy described by four parameterized equations…”
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A Jacobian elliptic single-field inflation by Villanueva, J. R., Gallo, Emanuel

“…In the scenario of single-field inflation, this field is described in terms of Jacobian elliptic functions. This approach provides, when constrained to…”
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Gravitational Rutherford scattering and Keplerian orbits for electrically charged bodies in heterotic string theory by Villanueva, J. R., Olivares, Marco

“…Properties of the motion of electrically charged particles in the background of the Gibbons–Maeda–Garfinkle–Horowitz–Strominger black hole is presented in this…”
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Modeling Chickenpox Dynamics with a Discrete Time Bayesian Stochastic Compartmental Model by Villanueva Micó, Rafael Jacinto, Jornet-Sanz, M., Santonja, Francisco-José, Corberán-Vallet, A.

“…We present a Bayesian stochastic susceptible-exposed-infectious-recovered model in discrete time to understand chickenpox transmission in the Valencian…”
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Geodesic structure of Lifshitz black holes in 2+1 dimensions by Cruz, Norman, Olivares, Marco, Villanueva, J. R.

“…We present a study of the geodesic equations of a black hole space-time which is a solution of the three-dimensional NMG theory and is asymptotically Lifshitz…”
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A nonlinear dynamic age-structured model of e-commerce in spain: Stability analysis of the equilibrium by delay and stochastic perturbations by Burgos, C., Cortés, J.-C., Shaikhet, L., Villanueva, R.-J.

“…•Age-structured epidemiological model to study the spread of e-commerce is proposed.•Delayed stochastic nonlinear system of differential equations are…”
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