267 citations · 670 across the 28 of their papers we have counts for
9 papers · 1 filter
Dynamical friction shear and rotation in Chaplygin cosmology
A. Del Popolo, Saeed Fakhry, Maryam Shiravand +1
In this study, we build upon the findings of Del Popolo et al. (2013) by further analyzing the influence of dynamical friction on the evolution of cosmological perturbations within…
Model-independent Test of the Cosmic Anisotropy with Inverse Distance Ladder
Zong-Fan Yang, Da-Wei Yao, Ke Wang
If the Universe is endowed with cosmic anisotropy, it will have a preferred direction of expansion. Reconstructing the expansion history by Gaussian Process (GP) can be used to pro…
Constraints on the Local Cosmic Void from the Pantheon Supernovae Data
Ke Wang, Kun-Peng Chen, Morgan Le Delliou
In principle, the local cosmic void can be simply modeled by the spherically symmetric Lemaitre-Tolman-Bondi (LTB) metric. In practice, the real local cosmic void is probably not s…
A Mass Dependent Density Profile from Dwarfs to Clusters
Antonino Del Popolo, Morgan Le Delliou
In this paper, we extend the work of Freundlich et al. 2020 who showed how to obtain a Dekel-Zhao density profile with mass dependent shape parameters in the case of galaxies. In t…
Small scale problems of the CDM model: a short review
Antonino Del Popolo, Morgan Le Delliou
The CDM model, or concordance cosmology, as it is often called, is a paradigm at its maturity. It is clearly able to describe the universe at large scale, even if some issues re…
Non-virialised clusters for detection of Dark Energy-Dark Matter interaction
Morgan Le Delliou, Rafael J. F. Marcondes, Gastao B. Lima Neto +1
The observation of galaxy and gas distributions, as well as cosmological simulations in a CDM Universe, suggests that clusters of galaxies are still accreting mass and are not e…
A unified solution to the small scale problems of the CDM model II: introducing parent-satellite interaction
Antonino Del Popolo, Morgan Le Delliou
We continue the study of the impact of baryon physics on the small scale problems of the CDM model, based on a semi-analytical model (Del Popolo, 2009). Withsuch model, we show…
Interacting dark energy collapse with matter components separation
Morgan Le Delliou, Tiago Barreiro
We use the spherical collapse model of structure formation to investigate the separation in the collapse of uncoupled matter (essentially baryons) and coupled dark matter in an int…
Testing the interaction of dark energy to dark matter through the analysis of virial relaxation of clusters Abell Clusters A586 and A1689 using realistic density profiles
Orfeu Bertolami, Francisco Gil Pedro, Morgan Le Delliou
Interaction between dark energy and dark matter is probed through deviation from the virial equilibrium for two relaxed clusters: A586 and A1689. The evaluation of the virial equil…