Ostorero, L., Moderski, R., Stawarz, L., Diaferio, A., Kowalska, I., Cheung, C. C., ...
In a dynamical-radiative model we recently developed to describe the physics of compact, GHz-Peaked-Spectrum (GPS) sources, the relativistic jets propagate across the inner, kpc-sized region of the...
Weak lensing signal in Unified Dark Matter models (2009)
Camera, S., Bertacca, D., Diaferio, A., Bartolo, N., Matarrese, S.
Weak gravitational lensing is a powerful tool for studying both the geometry and the dynamics of the Universe. Its power spectrum contains information on the sources emitting photons and on the...
Modelling the broad-band spectra of X-ray emitting GPS galaxies (2008)
Ostorero, L., Moderski, R., Stawarz, L., Begelman, M. C., Diaferio, A., Kowalska, I., ...
The study of the broad-band emission of GHz-Peaked-Spectrum (GPS) radio galaxies is a powerful tool to investigate the physical processes taking place in the central, kpc-sized region of their active...
The evidence for unusual gravity from the large-scale structure of the Universe (2008)
Under the assumption that General Relativity (GR) correctly describes the phenomenology of our Universe, astronomical observations provide compelling evidence that (1) the dynamics of cosmic...
Clusters of galaxies: beyond the thermal view (2008)
Kaastra, J. S., Bykov, A. M., Schindler, S., Bleeker, J. A. M., Borgani, S., Diaferio, A., ...
We present the work of an international team at the International Space Science Institute (ISSI) in Bern that worked together to review the current observational and theoretical status of the...
Clusters of galaxies: setting the stage (2008)
Diaferio, A., Schindler, S., Dolag, K.
Clusters of galaxies are self-gravitating systems of mass ~10^14-10^15 Msun. They consist of dark matter (~80 %), hot diffuse intracluster plasma (< 20 %) and a small fraction of stars, dust, and...
Simulation techniques for cosmological simulations (2008)
Dolag, K., Borgani, S., Schindler, S., Diaferio, A., Bykov, A. M.
Modern cosmological observations allow us to study in great detail the evolution and history of the large scale structure hierarchy. The fundamental problem of accurate constraints on the...
Thermodynamical properties of the ICM from hydrodynamical simulations (2008)
Borgani, S., Diaferio, A., Dolag, K., Schindler, S.
Modern hydrodynamical simulations offer nowadays a powerful means to trace the evolution of the X-ray properties of the intra-cluster medium (ICM) during the cosmological history of the hierarchical...
Non-thermal processes in cosmological simulations (2008)
Dolag, K., Bykov, A. M., Diaferio, A.
Non-thermal components are key ingredients for understanding clusters of galaxies. In the hierarchical model of structure formation, shocks and large-scale turbulence are unavoidable in the cluster...
Metal enrichment processes (2008)
There are many processes that can transport gas from the galaxies to their environment and enrich the environment in this way with metals. These metal enrichment processes have a large influence on...
The chemical enrichment of the ICM from hydrodynamical simulations (2008)
Borgani, S., Fabjan, D., Tornatore, L., Schindler, S., Dolag, K., Diaferio, A.
The study of the metal enrichment of the intra-cluster and inter-galactic media (ICM and IGM) represents a direct means to reconstruct the past history of star formation, the role of feedback...
The chemical enrichment of the ICM from hydrodynamical simulations (2008)
Borgani, S., Fabjan, D., Tornatore, L., Schindler, S., Dolag, K., Diaferio, A.
Simulation techniques for cosmological simulations (2008)
Dolag, K., Borgani, S., Schindler, S., Diaferio, A., Bykov, A. M.
Clusters of galaxies: beyond the thermal view (2008)
Kaastra, J.S., Bykov, A.M., Schindler, S., Bleeker, J.A.M., Borgani, S., Diaferio, A., ...
We present the work of an international team at the International Space Science Institute (ISSI) in Bern that worked together to review the current observational and theoretical status of the...
Clusters and Groups of Galaxies in the Simulated Local Universe (2006)
We compare the properties of galaxy groups extracted from the Updated Zwicky Catalogue (UZC) with those of groups extracted from N-body simulations of the local Universe, in a LambdaCDM and a tauCDM...
On the efficiency and reliability of cluster mass estimates based on member galaxies (2006)
Biviano, A., Murante, G., Borgani, S., Diaferio, A., Dolag, K., Girardi, M.
We study the efficiency and reliability of cluster mass estimators that are based on the projected phase-space distribution of galaxies in a cluster region. To this aim, we analyse a data-set of 62...
Systematics in the X-ray Cluster Mass Estimators (2006)
Rasia, E., Ettori, S., Moscardini, L., Mazzotta, P., Borgani, S., Dolag, K., ...
We examine the systematics affecting the X-ray mass estimators applied to a set of five simulated galaxy clusters. They have been processed through the X-ray Map Simulator, X-MAS, to provide...
Properties of the diffuse X-ray background in a high-resolution hydrodynamical simulation (2006)
Roncarelli, M., Moscardini, L., Tozzi, P., Borgani, S., Cheng, L. M., Diaferio, A., ...
Systematics in the X-ray cluster mass estimators (2006)
Rasia, E., Ettori, S., Moscardini, L., Mazzotta, P., Borgani, S., Dolag, K., ...
BIAS on estimates of X-ray cluster mass (2006)
Rasia, E., Ettori, S., Moscardini, L., Mazzotta, P., Borgani, S., Dolag, K., ...
On the efficiency and reliability of cluster mass estimates based on member galaxies (2006)
Biviano, A., Murante, G., Borgani, S., Diaferio, A., Dolag, K., Girardi, M.
Hot and Cooled baryons in SPH simulations of galaxy clusters: physics and numerics (2005)
Borgani, S., Dolag, K., Murante, G., Springel, V., Diaferio, A., ...
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 processes. The...
Ameglio, S., Borgani, S., Diaferio, A., Dolag, K.
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 effect. The...
Properties of the diffuse X-ray background in a high-resolution hydrodynamical simulation (2005)
Roncarelli, M., Moscardini, L., Tozzi, P., Borgani, S., Cheng, L. M., Diaferio, A., ...
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 gravitational and...
Simulating the soft X-ray excess in clusters of galaxies (2005)
Borgani, S., Tozzi, P., Tornatore, L., Diaferio, A., Dolag, K., ...
Simulating the Soft X-ray excess in clusters of galaxies (2004)
Borgani, S., Tozzi, P., Tornatore, L., Diaferio, A., Dolag, K., ...
The detection of excess of soft X-ray or Extreme Ultraviolet (EUV) radiation, above the thermal contribution from the hot intracluster medium (ICM), has been a controversial subject ever since the...
Rasia, E., Mazzotta, P., Borgani, S., Moscardini, L., Dolag, K., Tormen, G., ...
The thermal properties of hydrodynamical simulations of galaxy clusters are usually compared to observations by relying on the emission-weighted temperature T_ew, instead of on the spectroscopic...
Ettori, S., Borgani, S., Moscardini, L., Murante, G., Tozzi, P., Diaferio, A., ...
(ABRIDGED) We analyze the X-ray properties of a sample of local and high redshift galaxy clusters extracted from a large cosmological hydrodynamical simulation. This simulation has been realized...
Marini, F., Bardelli, S., Zucca, E., De Grandi, S., Cappi, A., Ettori, S., ...
In this paper we present the analysis of Beppo-SAX observations of the cluster pairs A2061-A2067 and A2122-A2124, located in the Corona Borealis supercluster, which have been selected as candidate...
Diaferio, A., Borgani, S., Moscardini, L., Murante, G., Dolag, K., Springel, V., ...
The fluctuations in the Cosmic Microwave Background (CMB) intensity due to the Sunyaev-Zeldovich (SZ) effect are the sum of a thermal and a kinetic contribution. Separating the two components to...
Rines, K., Geller, M. J., Diaferio, A., Kurtz, M. J., Jarrett, T. H.
CAIRNS (Cluster And Infall Region Nearby Survey) is a spectroscopic survey of the infall regions surrounding nine nearby rich clusters of galaxies. In Paper I, we used redshifts within $\sim 10\Mpc$...
X-ray properties of galaxy clusters and groups from a cosmological hydrodynamical simulation (2004)
Borgani, S., Murante, G., Springel, V., Diaferio, A., Dolag, K., Moscardini, L., ...
Mapping the Cosmic Web with the Sloan Digital Sky Survey (2004)
A. Diaferio, Michael S. Vogeley, Fiona Hoyle, All R. Rojas, David M
Abstract. Wide-angle, moderately deep redshift surveys such as that conducted as part of the Sloan Digital Sky Survey (SDSS) allow study of the relationship between the structural elements of the...
X-ray properties of galaxy clusters and groups from a cosmological hydrodynamical simulation (2003)
Borgani, S., Murante, G., Springel, V., Diaferio, A., Dolag, K., Moscardini, L., ...
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 model within a box of...
CAIRNS: The Cluster And Infall Region Nearby Survey I. Redshifts and Mass Profiles (2003)
Rines, K., Geller, M. J., Kurtz, M. J., Diaferio, A.
The CAIRNS (Cluster And Infall Region Nearby Survey) project is a spectroscopic survey of the infall regions surrounding eight nearby, rich, X-ray luminous clusters of galaxies. We collect 15665...
Yoshida, N., Sheth, R. K., Diaferio, A.
We use numerical simulations of a (480 Mpc h(-1))(3) volume to show that the distribution of peak heights in maps of the temperature fluctuations from the kinematic and thermal Sunyaev-Zeldovich (SZ)...
Infrared Mass-to-Light Profile Throughout the Infall Region of the Coma Cluster (2001)
Rines, K., Geller, M. J., Kurtz, M. J., Diaferio, A., Jarrett, T. H., Huchra, J. P.
Using a redshift survey of 1779 galaxies and photometry from the 2-Micron All-Sky Survey (2MASS) covering 200 square degrees, we calculate independent mass and light profiles for the infall region of...
X-ray Emitting Groups in the Infall Region of Abell 2199 (2001)
Rines, K., Mahdavi, A., Geller, M. J., Diaferio, A., Mohr, J. J., Wegner, G.
Using a large redshift survey covering 95 square degrees, we demonstrate that the infall region of Abell 2199 contains Abell 2197, one or two X-ray emitting groups, and up to five additional groups...
The Infall Region of Abell 576: Independent Mass and Light Profiles (2000)
Rines, K., Geller, M. J., Diaferio, A., Mohr, J. J., Wegner, G. A.
We describe observations of the nearby cluster of galaxies A576 beyond the virial radius and into the infall region. Using 1057 redshifts, we use the infall pattern in redshift space to determine the...