139 citations · 1.3k across the 50 of their papers we have counts for
50 papers
Cosmological redshift of a Schwarzschild-de Sitter black hole: Towards estimating the Hubble constant
Deborah Villaraos, Alfredo Herrera-Aguilar, Mehrab Momennia +1
In this work we estimate the parameters of several astrophysical black holes hosted at the core of active galactic nuclei by studying the kinematics of test objects in their accret…
Cosmological evolution of collisionless relativistic gases as dark matter
Francisco X. Linares Cedeño, Ulises Nucamendi, Olivier Sarbach
We study a phenomenological dark matter model described as a collisionless relativistic kinetic gas in a spatially flat Friedmann-Lemaître-Robertson-Walker universe. After normaliz…
Revisiting purely kinetic k-essence
Israel Quiros, Tame Gonzalez, Ulises Nucamendi +2
In this paper, we perform a dynamical systems study of the purely kinetic k-essence. Although these models have been studied in the past, a full study of the dynamics in the phase…
Schwarzschild black hole and redshift rapidity: A new approach towards measuring cosmic distances
Mehrab Momennia, Pritam Banerjee, Alfredo Herrera-Aguilar +1
Motivated by recent achievements of a full general relativistic method in estimating the mass-to-distance ratio of supermassive black holes hosted at the core of active galactic nu…
Gauge fixing in cosmological perturbations of Unimodular Gravity
Francisco X. Linares Cedeño, Ulises Nucamendi
With focus on the cosmological evolution of linear perturbations of matter and geometry, we calculate the equivalent expressions to that of the Newtonian and Synchronous gauges wit…
Kerr black hole in de Sitter spacetime and observational redshift: Toward a new method to measure the Hubble constant
Mehrab Momennia, Alfredo Herrera-Aguilar, Ulises Nucamendi
We extract the Hubble law by the frequency-shift considerations of test particles revolving the Kerr black hole in asymptotically de Sitter spacetime. To this end, we take into acc…