46 citations · 133 across the 13 of their papers we have counts for
13 papers
Novel second-order model for tumor evolution: description of cytostatic and cytotoxic effects
Carlos M. Nieto, Oscar M. Pimentel, Fabio D. Lora-Clavijo
Cancer is a disease that takes millions of lives every year. Then, to propose treatments, avoid recurrence, and improve the patient's life quality, we need to analyze this disease…
Magnetized tori with magnetic polarization around Kerr black holes: Variable angular momentum discs
Sergio Gimeno-Soler, Oscar. M. Pimentel, Fabio D. Lora-Clavijo +2
Analytical models of magnetized, geometrically thick disks are relevant to understand the physical conditions of plasma around compact objects and to explore its emitting propertie…
Synchrotron emitting Komissarov torus with magnetic polarization around Kerr black holes
J. M. Velásquez-Cadavid, Fabio D. Lora-Clavijo, Oscar M. Pimentel +1
Magnetic fields in black hole accretion disks are associated with processes of mass accretion and energy amplification. The contribution of the magnetic field due to the magnetic p…
OSIRIS: A New Code for Ray Tracing Around Compact Objects
Velásquez-Cadavid J. M., Arrieta-Villamizar J. A., F. D. Lora-Clavijo +2
The radiation observed in quasars and active galactic nuclei is mainly produced by a relativistic plasma orbiting close to the black hole event horizon, where strong gravitational…
Deep Attention-Based Supernovae Classification of Multi-Band Light-Curves
Óscar Pimentel, Pablo A. Estévez, Francisco Förster
In astronomical surveys, such as the Zwicky Transient Facility, supernovae (SNe) are relatively uncommon objects compared to other classes of variable events. Along with this scarc…
Magneto-rotational instability in magnetically polarized discs
Oscar M. Pimentel, P. Chris Fragile, F. D. Lora-Clavijo +2
The magneto-rotational instability (MRI) is the most likely mechanism for transportation of angular momentum and dissipation of energy within hot, ionized accretion discs. This ins…
Shadows around the q-metric
J. A. Arrieta-Villamizar, J. M. Velásquez-Cadavid, O. M. Pimentel +2
One crucial problem in relativistic astrophysics is that of the nature of black hole candidates. It is usually assumed that astrophysical black holes are described by the Schwarzsc…
On the linear and non linear evolution of the RMHD Kelvin Helmholtz instability in a magnetically polarized fluid
Oscar M. Pimentel, F. D. Lora-Clavijo
The origin of the magnetic field in some systems like AGNs or GRBs is still an open question in astrophysics. A possible mechanism to explain the magnetic field generation is the K…
Analytic solution of a magnetized tori with magnetic polarization around Kerr black holes
Oscar M. Pimentel, F. D. Lora-Clavijo, Guillermo A. Gonzalez
We present the first family of magnetically polarized equilibrium tori around a Kerr black hole. The models were obtained in the test fluid approximation by assuming that the tori…
Numerical general relativistic MHD with magnetically polarized matter
Oscar M. Pimentel, F. D. Lora-Clavijo, Guillermo A. González
The magnetically polarized matter in astrophysical systems may be relevant in some magnetically dominated regions. For instance, the funnel that is generated in some highly magneti…
Ideal Magnetohydrodynamics with Radiative Terms: Energy Conditions
Oscar M. Pimentel, F. D. Lora-Clavijo, Guillermo A. González
Nowadays, the magnetic and radiation fields are very important to understand the matter accretion into compact objects, the dynamics of binary systems, the equilibrium configuratio…
The Energy-Momentum Tensor for a Dissipative Fluid in General Relativity
Oscar M. Pimentel, Guillermo A. González, F. D. Lora-Clavijo
Considering the growing interest of the astrophysicist community in the study of dissipative fluids with the aim of getting a more realistic description of the universe, we present…
Static Thin Disks with Haloes as Sources of Conformastatic Spacetimes
Guillermo A. González, Oscar M. Pimentel
Two new families of exact solutions to the Einstein equations for a conformastatic spacetime with axial symmetry are presented which describe thin disks of dust immersed in a spher…