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Clues on galaxy and cluster formation from their scaling relations
B. Lanzoni, L. Ciotti, A. Cappi +2
By means of high-resolution N-body simulations in a LambdaCDM cosmology, we verify that scaling relations similar to those observed for nearby galaxy clusters are also defined by t…
The impact of cluster mergers on arc statistics
Elena Torri, Massimo Meneghetti, Matthias Bartelmann +3
We study the impact of merger events on the strong lensing properties of galaxy clusters. Previous lensing simulations were not able to resolve dynamical time scales of cluster len…
Simulating Chandra observations of galaxy clusters
A. Gardini, E. Rasia, P. Mazzotta +3
Numerical hydro-N-body simulations are very important tools for making theoretical predictions for the formation of galaxy clusters. They show that the atmospheres of clusters of g…
X-ray properties of galaxy clusters and groups from a cosmological hydrodynamical simulation
S. Borgani, G. Murante, V. Springel +6
We present results on the X-ray properties of clusters and groups of galaxies, extracted from a large hydrodynamical simulation. We used the GADGET code to simulate a LambdaCDM mod…
Numerical study of halo concentrations in dark-energy cosmologies
Klaus Dolag, Matthias Bartelmann, Francesca Perrotta +4
We study the concentration parameters, their mass dependence and redshift evolution, of dark-matter halos in different dark-energy cosmologies with constant and time-variable equat…
A dynamical model for the distribution of dark matter and gas in galaxy clusters
Elena Rasia, Giuseppe Tormen, Lauro Moscardini
Using high-resolution non-radiative hydrodynamic simulations of galaxy clusters we obtain simple analytic formulae for DM and gas distribution in the spherical approximation. We de…