158 citations · 1.4k across the 42 of their papers we have counts for
30 papers · 1 filter
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…
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…
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…
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…
Strong lensing modeling in galaxy clusters as a promising method to test cosmography I. Parametric dark energy models
Juan Magana, Ana Acebron, Veronica Motta +3
In this paper we probe five cosmological models for which the dark energy equation of state parameter, , is parameterized as a function of redshift using strong lensing data…
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…
Testing cosmic acceleration for parameterizations using measurements in galaxy clusters
Juan Magana, V. Motta, Victor H. Cardenas +1
In this paper we study the cosmic acceleration for five dynamical dark energy models whose equation of state varies with redshift. The cosmological parameters of these models are c…
Probing dark energy with braneworld cosmology in the light of recent cosmological data
Miguel A. Garcia-Aspeitia, Juan Magaña, Alberto Hernandez-Almada +1
We investigate a brane model based on Randall-Sundrum scenarios with a generic dark energy component. The latter drives the accelerated expansion at late times of the Universe. In…
A magnified glance into the dark sector: probing cosmological models with strong lensing in A1689
Juan Magaña, V. Motta, Victor H. Cardenas +2
In this paper we constrain four alternative models to the late cosmic acceleration in the Universe: Chevallier-Polarski-Linder (CPL), interacting dark energy (IDE), Ricci holograph…