299 citations · 576 across the 13 of their papers we have counts for
13 papers
A comparative study of emergent dark energy models
Andrés García-Rivera, A. Hernández-Almada, Miguel A. García-Aspeitia +1
Late (emergent) dark energy models that involve a hyperbolic tangent in their dynamic equations have achieved success due to their simplicity, the possibility of resolving the Hubb…
Reconstructing the cosmic expansion with a generalized q(z) parameterization: A decelerating Universe from late-time constraints
Tomás Verdugo, Alberto Hernández-Almada, Miguel A. García-Aspeitia +2
We present a generalized phenomenological parameterization of the deceleration parameter that incorporates an effective radiative component (ERC) in addition to a localized…
Enhancing Gravitational Lens Study with Deep Learning: A Study on Effects of Dropout Regularization
Juan J. Ancona-Flores, A. Hernández-Almada, V. Motta
Strong gravitational lensing provides valuable insights into the mass distribution of galaxies and the nature of dark matter. However, its modeling is computationally demanding due…
DESI and fast radio burst used to constrain modified theories of gravity
J. A. Astorga-Moreno, Miguel A. García-Aspeitia, A. Hernández-Almada +1
This paper is devoted to the study of the viability of DESI and the fast radio burst to constrain the free parameters of modified theories of gravity. Thus, we present a model supp…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
On a model of variable curvature that mimics the observed Universe acceleration
A. Esteban-Gutiérrez, Miguel A. García-Aspeitia, A. Hernández-Almada +2
We present a new model based on General Relativity in where a subtle change of curvature at late times is able to produce the observed Universe acceleration and an oscillating beha…
Phenomenological emergent dark energy in the light of DESI Data Release 1
A. Hernández-Almada, M. L. Mendoza-Martínez, Miguel A. García-Aspeitia +1
This manuscript revisits the phenomenological emergent dark energy model (PEDE) by confronting it with recent cosmological data from early and late times. In particular we analyze…
Quasar Microlensing Statistics and Flux-Ratio Anomalies in Lens Models
E. Mediavilla, J. Jiménez-Vicente, V. Motta
Precise lens modeling is a critical step in time delay studies of multiply imaged quasars, which are key for measuring some important cosmological parameters (specially ). How…
Synchronize your \textit{chrono-brane}: Testing a variable brane tension model with strong gravitational lensing
Tomás Verdugo, Mario H. Amante, Juan Magaña +3
Brane world models have shown to be promising to understand the late cosmic acceleration, in particular because such acceleration can be naturally derived, mimicking the dark energ…
Taxonomy of Dark Energy Models
V. Motta, Miguel A. García-Aspeitia, A. Hernández-Almada +2
The accelerated expansion of the Universe is one of the main discoveries of the past decades, indicating the presence of an unknown component: the dark energy. Evidence of its pres…
Testing dark energy models with a new sample of strong-lensing systems
Mario H. Amante, Juan Magaña, V. Motta +2
Inspired by a new compilation of strong lensing systems, which consist of 204 points in the redshift range for the lens and for the s…
Brane with variable tension as a possible solution to the problem of the late cosmic acceleration
Miguel A. Garcia-Aspeitia, A. Hernandez-Almada, Juan Magaña +3
Braneworld models have been proposed as a possible solution to the problem of the accelerated expansion of the Universe. The idea is to dispense the dark energy (DE) and drive the…
The Cardassian expansion revisited: constraints from updated Hubble parameter measurements and Type Ia Supernovae data
Juan Magana, Mario H. Amante, Miguel A. Garcia-Aspeitia +1
Motivated by an updated compilation of observational Hubble data (OHD) which consist of 51 points in the redshift range 0.07<z<2.36, we study an interesting model known as Cardassi…