158 citations · 1.4k across the 42 of their papers we have counts for
43 papers
Sub-kiloparsec Test of the Kennicutt-Schmidt Relation in a Strongly Lensed Dusty Star-Forming Galaxy at z~2.78
C. Cornil-Baïotto, J. Molina, G. Mahler +9
[abridged] Star formation is a key process driving galaxy evolution, but understanding how it proceeds within the interstellar medium (ISM) requires resolving cold molecular gas an…
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…
Cosmology under the fractional calculus approach: a possible tension resolution?
Genly Leon, Miguel A. García-Aspeitia, Guillermo Fernandez-Anaya +3
Recently, a new field of study called fractional cosmology has emerged. It uses fractional calculus to modify the standard derivative equations and change the Friedmann equations.…
An exponential equation of state of dark energy in the light of 2018 CMB Planck data
Mónica N. Castillo-Santos, A. Hernández-Almada, Miguel A. García-Aspeitia +1
The dynamics of the Universe is analyzed using an exponential function for the dark energy equation of state, known as Gong-Zhang parameterization. The phase space of the free para…
Extended primordial black hole mass functions with a spike
Juan Magaña, Marco San Martín, Joaquín Sureda +3
We introduce a modification of the Press-Schechter formalism aimed to derive general mass functions for primordial black holes (PBHs). In this case, we start from primordial power…
Dark matter from primordial black holes would hold charge
Ignacio J. Araya, Nelson D. Padilla, Marcelo E. Rubio +3
We explore the possibility that primordial black holes (PBHs) contain electric charge down to the present day. We find that PBHs should hold a non-zero net charge at their formatio…
Cosmology under the fractional calculus approach
Miguel A. García-Aspeitia, Guillermo Fernandez-Anaya, A. Hernández-Almada +2
Fractional cosmology modifies the standard derivative to Caputo's fractional derivative of order , generating changes in General Relativity. Friedmann equations are modified, an…
Observational constraints and dynamical analysis of Kaniadakis horizon-entropy cosmology
A. Hernández-Almada, Genly Leon, Juan Magaña +5
We study the scenario of Kanadiakis horizon entropy cosmology which arises from the application of the gravity-thermodynamics conjecture using the Kaniadakis modified entropy. The…
Kaniadakis holographic dark energy: observational constraints and global dynamics
A. Hernández-Almada, Genly Leon, Juan Magaña +4
We investigate Kaniadakis-holographic dark energy by confronting it with observations. We perform a Markov Chain Monte Carlo analysis using cosmic chronometers, supernovae type Ia,…
Barrow Entropy Cosmology: an observational approach with a hint of stability analysis
Genly Leon, Juan Magaña, A. Hernández-Almada +3
In this work, we use an observational approach and dynamical system analysis to study the cosmological model recently proposed by Saridakis (2020), which is based on the modificati…
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…
Magnetic field generation from primordial black hole distributions
Ignacio J. Araya, Marcelo E. Rubio, Marco San Martin +4
We introduce a statistical method for estimating magnetic field fluctuations generated from primordial black hole (PBH) populations. To that end, we consider monochromatic and exte…
Power spectrum of density fluctuations, halo abundances and clustering with primordial black holes
Nelson Padilla, Juan Magana, Joaquin Sureda +1
We study the effect of dark matter (DM) being encapsulated in primordial black holes (PBHs) on the power spectrum of density fluctuations ; we also look at its effect on the…
Cosmography using strong lensing systems and cosmic chronometers
Andrés Lizardo, Mario H. Amante, Miguel A. García-Aspeitia +2
Using a new sub-sample of observed strong gravitational lens systems, for the first time, we present the equation for the angular diameter distance in the -redshift scenario for…
Press-Schechter primordial black hole mass functions and their observational constraints
Joaquin Sureda, Juan Magana, Ignacio J. Araya +1
We present a modification of the Press-Schechter (PS) formalism to derive general mass functions for primordial black holes (PBHs), considering their formation as being associated…
Dissecting the Strong-lensing Galaxy Cluster MS 0440.5+0204. I. The Mass Density Profile
Tomás Verdugo, Eleazar R. Carrasco, Gael Foëx +5
We present a parametric strong lensing modeling of the galaxy cluster MS\,0440.5+0204 (located at = 0.19). We have performed a strong lensing mass reconstruction of the cluster…
Stability analysis and constraints on interacting viscous cosmology
A. Hernández-Almada, Miguel A. García-Aspeitia, Juan Magaña +1
In this work we study the evolution of a spatially flat Universe by considering a viscous dark matter and perfect fluids for dark energy and radiation, including an interaction ter…
Generalized Emergent Dark Energy: observational Hubble data constraints and stability analysis
A. Hernández-Almada, Genly Leon, Juan Magaña +2
Recently \citet{PEDE:2019ApJ} proposed a phenomenologically emergent dark energy (PEDE) which consider that the dark energy density evolves as $\widetildeΩ_{\rm{DE}}(z)\,=\,Ω_{\rm{…
The Universe acceleration from the Unimodular gravity view point: Background and linear perturbations
Miguel A. García-Aspeitia, A. Hernández-Almada, Juan Magaña +1
With the goal of studying the cosmological constant (CC) problem, we present an exhaustive analysis of unimodular gravity as a possible candidate to resolve the CC origin and with…
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…
Cosmic acceleration in unimodular gravity
Miguel A. García-Aspeitia, C. Martínez-Robles, A. Hernández-Almada +2
We study unimodular gravity in the context of cosmology, particularly some interesting consequences that might be able to describe the background cosmology and the late cosmic acce…
The `Cosmic Seagull': a highly magnified disk-like galaxy at z~2.8 behind the Bullet Cluster
V. Motta, E. Ibar, T. Verdugo +8
We present Atacama Large Millimeter/submillimeter Array measurements of the `Cosmic Seagull', a strongly magnified galaxy at z=2.7779 behind the Bullet Cluster. We report CO(3-2) a…
Constraints on barotropic dark energy models by a new phenomenological parameterization
Jaime Roman-Garza, Tomas Verdugo, Juan Magana +1
In this paper, we propose a new phenomenological two parameter parametrization of to constrain barotropic dark energy models by considering a spatially flat FRW universe, ne…
Cosmological constraints on alternative model to Chaplygin fluid revisited
A. Hernandez-Almada, Juan Magana, Miguel A. Garcia-Aspeitia +1
In this work we explore an alternative phenomenological model to Chaplygin gas proposed by H. Hova et. al., consisting on a modification of a perfect fluid, to explain the dynamics…