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Hot and Cooled baryons in SPH simulations of galaxy clusters: physics and numerics
S. Borgani, K. Dolag, G. Murante +7
We discuss an extended set of Tree+SPH simulations of galaxy clusters, with the goal of investigating the interplay between numerical resolution effects and star-formation/feedback…
Angular diameter distance estimates from the Sunyaev-Zel'dovich effect in hydrodynamical cluster simulations
S. Ameglio, S. Borgani, A. Diaferio +1
The angular-diameter distance D_A of a galaxy cluster can be measuread by combining its X-ray emission with the cosmic microwave background fluctution due to the Sunyaev-Zeldovich…
The baryon fraction in hydrodynamical simulations of galaxy clusters
S. Ettori, K. Dolag, S. Borgani +1
We study the baryon mass fraction in a set of hydrodynamical simulations of galaxy clusters performed using the Tree+SPH code GADGET-2. We investigate the dependence of the baryon…
Properties of the diffuse X-ray background in a high-resolution hydrodynamical simulation
M. Roncarelli, L. Moscardini, P. Tozzi +5
We study the properties of the diffuse X-ray background by using the results of a cosmological hydrodynamical simulation of the concordance LambdaCDM model. The simulation follows…
An X-ray Galaxy Cluster Survey for Investigations of Dark Energy
Z. Haiman, S. Allen, N. Bahcall +34
The amount and nature of dark energy (DE) can be tightly constrained by measuring the spatial correlation features and evolution of a sample of ~ 100,000 galaxy clusters over the r…
Internal dynamics of the z sim 0.8 cluster RX J0152.7-1357
M. Girardi, R. Demarco, P. Rosati +1
We present the results from the dynamical analysis of the cluster of galaxies RX J0152-1357, which shows a complex structure in its X-ray emission, with two major clumps in the cen…