225 citations · 1.8k across the 44 of their papers we have counts for
20 papers · 1 filter
Dianoga simulations of galaxy clusters and groups: Properties of the baryonic components
Stefano Borgani, Alice Damiano, Elena Rasia +12
We introduce the Dianoga set of cosmological simulations of galaxy clusters and groups, specifically aimed at studying the impact of the implementation of AGN feedback and star for…
CLASH-VLT: The variance in the velocity anisotropy profiles of galaxy clusters
A. Biviano, E. A. Maraboli, L. Pizzuti +9
The velocity anisotropy profiles, , of galaxy clusters are directly related to the shape of the orbits of their member galaxies. Knowledge of is important to understan…
Dynamical friction and evolution of black holes in cosmological simulations: a new implementation in OpenGadget3
Alice Damiano, Milena Valentini, Stefano Borgani +5
We implement a sub-resolution prescription for the unresolved dynamical friction onto black holes (BHs) in the OpenGadget3 code. We carry out cosmological simulations of a volume o…
Galaxies in the central regions of simulated galaxy clusters
Antonio Ragagnin, Massimo Meneghetti, Luigi Bassini +20
In this paper, we assess the impact of numerical resolution and of the implementation of energy input from AGN feedback models on the inner structure of cluster sub-haloes in hydro…
The probability of galaxy-galaxy strong lensing events in hydrodynamical simulations of galaxy clusters
Massimo Meneghetti, Antonio Ragagnin, Stefano Borgani +27
Meneghetti et al. (2020) recently reported an excess of galaxy-galaxy strong lensing (GGSL) in galaxy clusters compared to expectations from the LCDM cosmological model. Theoretica…
Exploring the role of cosmological shock waves in the Dianoga simulations of galaxy clusters
Susana Planelles, Stefano Borgani, Vicent Quilis +6
Cosmological shock waves are ubiquitous to cosmic structure formation and evolution. As a consequence, they play a major role in the energy distribution and thermalization of the i…
Halo cluster shapes: Insights from simulated galaxies and ICL with prospects for weak lensing applications
Elizabeth J. Gonzalez, Cinthia Ragone-Figueroa, Carlos J. Donzelli +3
We present a detailed study of the shapes and alignments of different galaxy cluster components using hydrodynamical simulations. We compute shape parameters from the Dark Matter (…
Pressure of the hot gas in simulations of galaxy clusters
S. Planelles, D. Fabjan, S. Borgani +11
We analyze the radial pressure profiles, the ICM clumping factor and the Sunyaev-Zel'dovich (SZ) scaling relations of a sample of simulated galaxy clusters and groups identified in…
Cosmological hydrodynamical simulations of galaxy clusters: X-ray scaling relations and their evolution
N. Truong, E. Rasia, P. Mazzotta +11
We analyse cosmological hydrodynamical simulations of galaxy clusters to study the X-ray scaling relations between total masses and observable quantities such as X-ray luminosity,…
On the nature of hydrostatic equilibrium in galaxy clusters
V. Biffi, S. Borgani, G. Murante +7
In this paper we investigate the level of hydrostatic equilibrium (HE) in the intra-cluster medium of simulated galaxy clusters, extracted from state-of-the-art cosmological hydrod…
Cool Core Clusters from Cosmological Simulations
E. Rasia, S. Borgani, G. Murante +7
We present results obtained from a set of cosmological hydrodynamic simulations of galaxy clusters, aimed at comparing predictions with observational data on the diversity between…
Neutral hydrogen in galaxy clusters: impact of AGN feedback and implications for intensity mapping
Francisco Villaescusa-Navarro, Susana Planelles, Stefano Borgani +8
By means of zoom-in hydrodynamic simulations we quantify the amount of neutral hydrogen (HI) hosted by groups and clusters of galaxies. Our simulations, which are based on an impro…
Simulation-based marginal likelihood for cluster strong lensing cosmology
Madhura Killedar, Stefano Borgani, Dunja Fabjan +5
Comparisons between observed and predicted strong lensing properties of galaxy clusters have been routinely used to claim either tension or consistency with CDM cosmology. Howev…
Temperature Structure of the Intra-Cluster Medium from SPH and AMR simulations
Elena Rasia, Erwin T. Lau, Stefano Borgani +8
Analyses of cosmological hydrodynamic simulations of galaxy clusters suggest that X-ray masses can be underestimated by 10% to 30%. The largest bias originates by both violation of…
On the role of AGN feedback on the thermal and chemodynamical properties of the hot intra-cluster medium
S. Planelles, S. Borgani, D. Fabjan +5
We present an analysis of the properties of the ICM in an extended set of cosmological hydrodynamical simulations of galaxy clusters and groups performed with the TreePM+SPH GADGET…
Brightest cluster galaxies in cosmological simulations: achievements and limitations of AGN feedback models
Cinthia Ragone-Figueroa, Gian Luigi Granato, Giuseppe Murante +2
We analyze the basic properties of Brightest Cluster Galaxies (BCGs) produced by state of the art cosmological zoom-in hydrodynamical simulations. These simulations have been run w…
Effects of Baryon Mass Loss on Profiles of Large Galactic Dark Matter Haloes
Cinthia Ragone-Figueroa, Gian Luigi Granato, Mario G. Abadi
We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter haloes. This mass expulsion is intended to…
A Consistent Comparison of Bias Models using Observational Data
A. Papageorgiou, M. Plionis, S. Basilakos +1
We investigate five different models for the dark matter halo bias, ie., the ratio of the fluctuations of mass tracers to those of the underlying mass, by comparing their cosmologi…
Puffing up early-type galaxies by baryonic mass loss: numerical experiments
Cinthia Ragone-Figueroa, Gian Luigi Granato
Observations performed in the last few years indicate that most massive early-type galaxies (ETGs) observed at redshift z>1 exhibit sizes smaller by a factor of a few than local ET…
The Relation Between Halo Shape, Velocity Dispersion and Formation Time
C. Ragone-Figueroa, M. Plionis, M. Merchan +2
We use dark matter haloes identified in the MareNostrum Universe and galaxy groups identified in the Sloan Data Release 7 galaxy catalogue, to study the relation between halo shape…