output
19932026
most citedBounds on the basic physical parameters for anisotropic compact general relativistic objects

377 citations

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14 papers · 1 filter

astro-ph.CO2026

Signatures of Extended Dark Energy Parametrisations in Structure Formation under Background Constraints

Greco A. Peña, Mario H. Amante, Javier Chagoya +3

We study structure formation in alternative cosmological models constrained by background observations, including CDM, wCDM, the Chevallier-Polarski-Linder parametrisation and a…

astro-ph.CO2021★ 1 cited

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,…

astro-ph.CO2021★ 59 cited

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…

astro-ph.CO2021★ 20 cited

A hybrid model of viscous and Chaplygin gas to tackle the Universe acceleration

A. Hernández-Almada, Miguel A. García-Aspeitia, M. A. Rodrírgues-Meza +1

Motivated by two seminal models proposed to explain the Universe acceleration, this paper is devoted to study a hybrid model which is constructed through a generalized Chaplygin ga…

astro-ph.CO2020★ 10 cited

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…

astro-ph.CO2020★ 31 cited

Constraints and cosmography of CDM in presence of viscosity

L. Herrera-Zamorano, A. Hernández-Almada, Miguel A. García-Aspeitia

In this work, we study two scenarios of the Universe filled by a perfect fluid following the traditional dark energy and a viscous fluid as dark matter. In this sense, we explore t…

astro-ph.CO2020★ 23 cited

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…

astro-ph.CO2020★ 58 cited

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{…

astro-ph.CO2019★ 3 cited

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…

astro-ph.CO2019★ 41 cited

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…

astro-ph.CO2018★ 66 cited

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…

astro-ph.CO2017★ 158 cited

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…

astro-ph.CO2015

Gravitational Wave Background in the Quasi-Steady State Cosmology

J. V. Narlikar, S. V. Dhurandhar, R. G. Vishwakarma +2

This paper calculates the expected gravitational wave background (GWB) in the quasi-steady state cosmology (QSSC). The principal sources of gravitational waves in the QSSC are the…

astro-ph.CO2013★ 18 cited

A Curious Explanation of Some Cosmological Phenomena

Ram Gopal Vishwakarma

While observational cosmology has shown tremendous growth over the last decade, deep mysteries continue to haunt our theoretical understanding of the ingredients of the concordance…