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269 papers · 1 filter
Scattering of electromagnetic field in quasi-topological gravity
Juan Pablo Arbelaez
We investigate the absorption cross sections of electromagnetic perturbations propagating on a four-dimensional brane in the background of higher-dimensional regular black holes ar…
An efficient higher-order WKB code for quasinormal modes and greybody factors
Roman A. Konoplya, Jerzy Matyjasek, Alexander Zhidenko
The higher-order WKB Mathematica code for computing quasinormal modes, whose accuracy was significantly enhanced through extensions to higher orders and, in particular, through the…
Using thermodynamics to learn gravitational wave physics
Caio César Rodrigues Evangelista, Níckolas de Aguiar Alves
Black holes are some of the most interesting objects in the universe. While they first arise in the complicated behavior of general relativity, the physical laws ruling their behav…
Grey-body factors of higher dimensional regular black holes in quasi-topological theories
Juan Pablo Arbelaez
We study grey body factors and Hawking radiation of higher dimensional regular black holes arising in quasi topological gravity. These spacetimes incorporate infinite curvature cor…
Thermodynamic stability in an Einstein universe
E. S. Moreira, J. P. A. Paula
We calculate the Feynman propagator at finite temperature in an Einstein universe for a neutral massive scalar field arbitrarily coupled to the Ricci curvature. Then, the propagato…
Estimation of the MTOV precision for ET, CE, and NEMO from the post-merger of BNS coalescences
Gabriela Conde-Saavedra, Odylio Denys Aguiar, Henrique P. de Oliveira +1
The detection of the gravitational waves produced after the coalescence of two neutron stars is greatly anticipated because it will be able to provide information about matter in e…