activity
20232026
collaborators

5 papers

gr-qc2026

Scattering sections from regular black holes immersed in perfect fluid dark matter

Omar Pedraza, L. A. López, Isaac Fernández

In this contribution, we investigate the scattering cross sections of black holes immersed in perfect fluid dark matter (PFDM). We present both the classical and semi-classical sca…

gr-qc2025

Quasi-normal modes of the Ayón-Beato-García black hole surrounded by quintessence

Diego Ariel Sotelo Carrillo, Omar Pedraza, L. A. López +1

We compute the quasi-normal modes of scalar, electromagnetic, and gravitational perturbations of an Ayón-Beato-García black hole surrounded by quintessence using the Asymptotic Ite…

math-ph2025

Spectral analysis of Dirac materials in position-dependent magnetic and electric fields via Heun functions

Daniel O-Campa, Omar Pedraza, L. A. López +1

This work focuses on the study of the spectral problem for Dirac materials immersed in position-dependent magnetic and electric fields. To achieve this, the system of differential…

gr-qc2025

Quasi-normal modes and absorption section from regular black holes immersed in perfect fluid dark matter

L. O. Téllez Tovar, Omar Pedraza, L. A. López +1

We study scalar, electromagnetic and gravitational perturbations of three families of regular black holes, Hayward, Bardeen, and Ayon-Beato-García immersed in a Perfect Fluid Dark…

gr-qc2023

Quasinormal modes of the Schwarzschild black hole with a deficit solid angle and quintessence-like matter: Improved asymptotic iteration method

L. A. López, Omar Pedraza, Roberto Arceo +1

We study the quasinormal modes (QNM) for scalar, and electromagnetic perturbations in the Schwarzschild black hole with a deficit solid angle and quintessence-like matter. Using th…