Marulli, Federico, Bonoli, Silvia, Branchini, Enzo, Gilli, Roberto, Moscardini, Lauro, Springel, Volker
We study the spatial distribution of X-ray selected AGN in the framework of hierarchical co-evolution of supermassive black holes and their host galaxies and dark matter haloes. To this end, we have...
X-ray and strong lensing mass estimate of MS2137.3-2353 (2009)
Donnarumma, Annamaria, Ettori, Stefano, Meneghetti, Massimo, Moscardini, Lauro
We present new mass estimates of the galaxy cluster MS2137.3-2353, inferred from X-ray and strong lensing analyses. This cluster exhibits an outstanding strong lensing configuration and indicates a...
Bonoli, Silvia, Marulli, Federico, Springel, Volker, White, Simon D. M., Branchini, Enzo, Moscardini, Lauro
Marulli, Federico, Bonoli, Silvia, Branchini, Enzo, Gilli, Roberto, Moscardini, Lauro, Springel, Volker
Salucci, Paolo, Borgani, Stefano, Frenk, Carlos, Moscardini, Lauro, Viel, Matteo
In the study of the process of cosmic structure formation numerical simulations are crucial tools to interface observational data to theoretical models and to investigate issues otherwise unexplored....
Bonoli, Silvia, Marulli, Federico, Springel, Volker, White, Simon D. M., Branchini, Enzo, Moscardini, Lauro
We use semi-analytic modeling on top of the Millennium simulation to study the joint formation of galaxies and their embedded supermassive black holes. Our goal is to test scenarios in which black...
X-MAS2: Study Systematics on the ICM Metallicity Measurements (2008)
Rasia, Elena, Mazzotta, Pasquale, Bourdin, Herve, Borgani, Stefano, Tornatore, Luca, Ettori, Stefano, ...
X-ray measurements of the intracluster medium metallicity are becoming more and more frequent due to the availability of powerful X-ray telescopes with excellent spatial and spectral resolutions. The...
Evrard, August E., Bialek, James, Busha, Michael T., White, Martin, Habib, Salman, Heitmann, Katrin, ...
Abstract not available.
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Evrard, August E., Bialek, James, Busha, Michael T., White, Martin, Habib, Salman, Heitmann, Katrin, ...
Abstract not available.
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Evrard, August E., Bialek, James, Busha, Michael T., White, Martin, Habib, Salman, Heitmann, Katrin, ...
Abstract not available.
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Evrard, August E., Bialek, James, Busha, Michael T., White, Martin, Habib, Salman, Heitmann, Katrin, ...
Abstract not available.
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Evrard, August E., Bialek, James, Busha, Michael T., White, Martin, Habib, Salman, Heitmann, Katrin, ...
Abstract not available.
The Effect of Primordial Non--Gaussianity on the Topology of Large-Scale Structure (2007)
Hikage, Chiaki, Coles, Peter, Grossi, Margherita, Moscardini, Lauro, Dolag, Klaus, Branchini, Enzo, ...
We study the effect of primordial non--Gaussianity on the development of large-scale cosmic structure using high-resolution N-body simulations. In particular, we focus on the topological properties...
Meneghetti, Massimo, Melchior, Peter, Grazian, Andrea, De Lucia, Gabriella, Dolag, Klaus, Bartelmann, Matthias, ...
We present a newly developed code that allows simulations of optical observations of galaxy fields with a variety of instruments. The code incorporates gravitational lensing effects and is targetted...
Maio, Umberto, Dolag, Klaus, Meneghetti, Massimo, Moscardini, Lauro, Yoshida, Naoki, Baccigalupi, Carlo, ...
We present the first hydrodynamic N-body simulations of primordial gas clouds responsible for the reionisation process in dark energy cosmologies. We compare the cosmological constant scenario with a...
Borgani, Stefano, Dolag, Klaus, Murante, Giuseppe, Cheng, L.M., Springel, Volker, Diaferio, Antonaldo, ...
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...
Marulli, Federico, Bonoli, Silvia, Branchini, Enzo, Moscardini, Lauro, Springel, Volker
We model the cosmological co-evolution of galaxies and their central supermassive black holes (BHs) within a semi-analytical framework developed on the outputs of the Millennium Simulation. This...
Testing the reliability of weak lensing cluster detections (2007)
Pace, Francesco, Maturi, Matteo, Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro, Dolag, Klaus
We study the reliability of dark-matter halo detections with three different linear filters applied to weak-lensing data. We use ray-tracing in the multiple lens-plane approximation through a large...
Arc sensitivity to cluster ellipticity, asymmetries and substructures (2006)
Meneghetti, Massimo, Argazzi, Rodolfo, Pace, Francesco, Moscardini, Lauro, Dolag, Klaus, Bartelmann, Matthias, ...
We investigate how ellipticity, asymmetries and substructures separately affect the ability of galaxy clusters to produce strong lensing events, i.e. gravitational arcs, and how they influence the...
Evolution of dark-matter haloes in a variety of dark-energy cosmologies (2005)
Bartelmann, Matthias, Dolag, Klaus, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, Meneghetti, Massimo, ...
Strong lensing by cluster-sized halos in dark energy cosmologies (2005)
Meneghetti, Massimo, Bartelmann, Matthias, Dolag, Klaus, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, ...
Constraints on dark energy from strong gravitational lensing by galaxy clusters (2005)
Meneghetti, Massimo, Baccigalupi, Carlo, Bartelmann, Matthias, Dolag, Klaus, Moscardini, Lauro, Perrotta, Francesca, ...
Strong lensing by cluster-sized halos in dark energy cosmologies (2005)
Meneghetti, Massimo, Bartelmann, Matthias, Dolag, Klaus, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, ...
CODEX : measuring the expansion of the universe (2005)
Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...
CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...
CODEX : measuring the expansion of the universe (2005)
Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...
CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...
CODEX : measuring the expansion of the universe (2005)
Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...
CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...
Strong lensing by cluster-sized haloes in dark-energy cosmologies (2004)
Meneghetti, Massimo, Bartelmann, Matthias, Dolag, Klaus, Moscardini, Lauro, Perrotta, Francesca, Baccigalupi, Carlo, ...
We study the efficiency of numerically simulated galaxy clusters for producing strong gravitational lensing events in different dark-energy cosmologies with constant and time-variable equation of...
The impact of cluster mergers on arc statistics (2004)
Torri, Elena, Menneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro, Rasia, Elena, Tormen, Giuseppe
Numerical study of halo concentrations in dark-energy cosmologies (2004)
Dolag, Klaus, Bartelmann, Matthias, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, Meneghetti, Massimo, ...
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 equation of state, and...
The impact of cluster mergers on arc statistics (2003)
Torri, Elena, Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro, Rasia, Elena, Tormen, Giuseppe
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 lenses, which arise on...
Numerical study of halo concentrations in dark-energy cosmologies (2003)
Dolag, Klaus, Bartelmann, Matthias, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro, Meneghetti, Massimo, ...
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 equation of state, and...
A dynamical model for the distribution of dark matter and gas in galaxy clusters (2003)
Rasia, Elena, Tormen, Giuseppe, Moscardini, Lauro
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 derive fits for the...
Constraints on extended quintessence from high-redshift Supernovae (2003)
Caresia, Paolo, Matarrese, Sabino, Moscardini, Lauro
We obtain constraints on quintessence models from magnitude-redshift measurements of 176 type Ia Supernovae. The considered quintessence models are ordinary quintessence, with Ratra-Peebles and SUGRA...
Liguori, Michele, Matarrese, Sabino, Moscardini, Lauro
We describe a new numerical algorithm to obtain high-resolution simulated maps of the Cosmic Microwave Background (CMB), for a broad class of non-Gaussian models. The kind of non-Gaussianity we...
Arc statistics with realistic cluster models (2003)
Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro, Rasia, Elena, Tormen, Giuseppe, Torri, Elena
Arc statistics is known to be a powerful cosmological tool. Numerical lensing simulations show that orders of magnitude differences in the number of {\em giant} arcs on the whole sky are expected in...
Properties of cluster satellites in hydrodynamical simulations (2003)
Tormen, Giuseppe, Moscardini, Lauro, Yoshida, Naoki
We analyze the dynamical and thermal evolution of dark matter and ICM in hydrodynamical Tree-SPH simulations of galaxy clusters. Starting from a sample of 17 high-resolution objects, with virial mass...
The Asiago-ESO/RASS QSO Survey. III. Clustering analysis and its theoretical interpretation (2003)
Grazian, Andrea, Negrello, Mattia, Moscardini, Lauro, Cristiani, Stefano, Haehnelt, Martin G., Matarrese, Sabino, ...
This is the third paper of a series describing the Asiago-ESO/RASS QSO survey (AERQS), a project aimed at the construction of an all-sky statistically well-defined sample of relatively bright QSOs (B
cD galaxy contribution to the strong lensing cross sections of galaxy clusters (2003)
Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro
We perform ray-tracing simulations evaluating the effect of a cD galaxy on the strong lensing properties of five galaxy cluster halos obtained from N-body simulations. The cD galaxy is modelled using...
Cluster cross-sections for strong lensing: analytic and numerical lens models (2003)
Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro
Arc statistics in cosmological models with dark energy (2003)
Bartelmann, Matthias, Meneghetti, Massimo, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro
We investigate how the probability of the formation of giant arcs in galaxy clusters is expected to change in cosmological models dominated by dark energy with an equation of state p=w rho c^2...
Arc Statistics in Cosmological Models with Dark Energy (2002)
Bartelmann, Matthias, Meneghetti, Massimo, Perrotta, Francesca, Baccigalupi, Carlo, Moscardini, Lauro
We investigate how the probability of the formation of giant arcs in galaxy clusters is expected to change in cosmological models dominated by dark energy with an equation of state p=w rho c^2...
Cluster cross sections for strong lensing: analytic and numerical lens models (2002)
Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro
The statistics of gravitationally lensed arcs was recognised earlier as a potentially powerful cosmological probe. However, while fully numerical models find orders of magnitude difference between...
Clustering properties of galaxy clusters in present and future surveys (2002)
Moscardini, Lauro, Matarese, Sabino, Andreani, Paola, Bartelmann, Matthias, Mo, Houjun
Predicting the clustering properties of galaxy clusters detectable for the Planck satellite (2001)
Moscardini, Lauro, Bartelmann, Matthias, Matarrese, Sabino, Andreani, Paola
We study the clustering properties of the galaxy clusters detectable for the Planck satellite due to their thermal Sunyaev-Zel'dovich effect. We take the past light-cone effect and the redshift...
Constraining cosmological models using arc statistics in future SZ cluster surveys (2001)
Meneghetti, Massimo, Bartelmann, Matthias, Moscardini, Lauro
Upcoming wide-area surveys in the submillimetre regime will allow the construction of complete galaxy cluster samples through their thermal Sunyaev-Zel'dovich effect. We propose an analytic method to...
Giant cluster arcs as a constraint on the scattering cross-section of dark matter (2000)
Meneghetti, Massimo, Yoshida, Naoki, Bartelmann, Matthias, Moscardini, Lauro, Springel, Volker, Tormen, Giuseppe, ...
We carry out ray tracing through five high resolution simulations of a galaxy cluster to study how its ability to produce giant gravitationally lensed arcs is influenced by the collision...
Moscardini, Lauro, Matarrese, Sabino, Mo, H. J.
(abridged) We use a theoretical model to predict the clustering properties of galaxy clusters. Our technique accounts for past light-cone effects on the observed clustering and follows the non-linear...
Cluster galaxies: contribution to the arc statistics (2000)
Meneghetti, Massimo, Bolzonella, Micol, Bartelmann, Matthias, Moscardini, Lauro, Tormen, Giuseppe
We present the results of a set of numerical simulations aiming at evaluating the effects of cluster galaxies on the arc statistics. At this goal we use nine different galaxy clusters obtained from...
Predicting the Clustering of X-Ray Clusters (1999)
Moscardini, Lauro, Matarrese, Sabino, Lucchin, Francesco, De Grandi, Sabrina, Rosati, Piero
We present a theoretical model which aims at predicting the clustering properties of X-ray clusters in flux-limited surveys for different cosmological scenarios. The model uses the theoretical and...
Predicting the Clustering of X-Ray Selected Galaxy Clusters in Flux-Limited Surveys (1999)
Moscardini, Lauro, Matarrese, Sabino, Lucchin, Francesco, Rosati, Piero
(abridged) We present a model to predict the clustering properties of X-ray clusters in flux-limited surveys. Our technique correctly accounts for past light-cone effects on the observed clustering...
Effects of cluster galaxies on arc statistics (1999)
Meneghetti, Massimo, Bolzonella, Micol, Bartelmann, Matthias, Moscardini, Lauro, Tormen, Giuseppe
We present the results of a set of numerical simulations evaluating the effect of cluster galaxies on arc statistics. We perform a first set of gravitational lensing simulations using three...
The correlation function of X-ray galaxy clusters in the RASS1 Bright Sample (1999)
Moscardini, Lauro, Matarrese, Sabino, De Grandi, Sabrina, Lucchin, Francesco
We analyse the spatial clustering properties of the RASS1 Bright Sample, an X-ray flux-limited catalogue of galaxy clusters selected from the southern part of the $ROSAT$ All-Sky Survey. The...
Measuring and Modelling the Redshift Evolution of Clustering: the Hubble Deep Field North (1999)
Arnouts, Stephane, Cristiani, Stefano, Moscardini, Lauro, Matarrese, Sabino, Lucchin, Francesco, Fontana, Adriano, ...
(abridged) The evolution of galaxy clustering from z=0 to z=4.5 is analyzed using the angular correlation function and the photometric redshift distribution of galaxies brighter than I_{AB}\le 28.5...
Large-scale bias in the Universe II: redshift space bispectrum (1998)
Verde, Licia, Heavens, Alan F., Matarrese, Sabino, Moscardini, Lauro
The determination of the density parameter $\Omega_0$ from the large-scale distribution of galaxies is one of the major goals of modern cosmology. However, if galaxies are biased tracers of the...
The Clustering of Lyman-break Galaxies (1998)
Coles, Peter, Lucchin, Francesco, Matarrese, Sabino, Moscardini, Lauro
We calculate the statistical clustering of Lyman-break galaxies predicted in a selection of currently-fashionable structure formation scenarios. These models are all based on the cold dark matter...
Modelling galaxy clustering at high redshift (1997)
Moscardini, Lauro, Coles, Peter, Lucchin, Francesco, Matarrese, Sabino
We discuss the theoretical interpretation of observational data concerning the clustering of galaxies at high redshifts. Building on the theoretical machinery developed by Matarrese et al. (1997), we...
Constraining the cosmological baryon density with X-ray clusters (1997)
Gheller, Claudio, Pantano, Ornella, Moscardini, Lauro
We study the properties of X-ray galaxy clusters in four cold dark matter models with different baryon fraction $\Omega_{BM}$ ranging from 5 to 20 per cent. By using an original three-dimensional...
A cosmological hydrodynamic code based on the Piecewise Parabolic Method (1997)
Gheller, Claudio, Pantano, Ornella, Moscardini, Lauro
We present a hydrodynamical code for cosmological simulations which uses the Piecewise Parabolic Method (PPM) to follow the dynamics of gas component and an N-body Particle-Mesh algorithm for the...
Redshift evolution of clustering (1996)
Matarrese, Sabino, Coles, Peter, Lucchin, Francesco, Moscardini, Lauro
We discuss how the redshift dependence of the observed two-point correlation function of various classes of objects can be related to theoretical predictions. This relation involves first a...
The Cluster Distribution as a Test of Dark Matter Models. III. the Cluster Velocity Field (1995)
Moscardini, Lauro, Branchini, Enzo, Brunozzi, Paolo Tini, Borgani, Stefano, Plionis, Manolis, Coles, Peter
We study the large-scale velocity fields traced by galaxy clusters in numerical simulations of a box of side 960 $h^{-1}$ Mpc, and compare them with available data on real clusters. In order to test...
The epoch of structure formation in blue mixed dark matter models (1995)
Borgani, Stefano, Lucchin, Francesco, Matarrese, Sabino, Moscardini, Lauro
Recent data on the high--redshift abundance of damped Ly$\alpha$ systems are compared with theoretical predictions for `blue' (i.e. $n>1$) Mixed Dark Matter models. The results show that decreasing...
Gheller, Claudio, Moscardini, Lauro, Pantano, Ornella
We present the results of a series of one-dimensional N-body and hydrodynamical simulations which have been used for testing the different clustering properties of baryonic and dark matter in an...
Gheller, Claudio, Moscardini, Lauro, Pantano, Ornella
We present the results of a series of one-dimensional N-body and hydrodynamical simulations which have been used for testing the different clustering properties of baryonic and dark matter in an...
Testing DM models against the cluster distribution (1995)
Plionis, Manolis, Borgani, Stefano, Moscardini, Lauro, Coles, Peter
We study the clustering properties of numerical simulations of the cluster distribution, which are based on the Zel'dovich approximation, and compare them with an extended redshift sample of...
Eulerian Perturbation Theory in Non-Flat Universes: Second-Order Approximation (1994)
Catelan, Paolo, Lucchin, Francesco, Matarrese, Sabino, Moscardini, Lauro
The problem of solving perturbatively the equations describing the evolution of self-gravitating collisionless matter in an expanding universe considerably simplifies when directly formulated in...
Testing the Velocity Field in Non--Scale Invariant Cold Dark Matter Models (1994)
Moscardini, Lauro, Tormen, Giuseppe, Matarrese, Sabino, Lucchin, Francesco
We analyze the cosmic peculiar velocity field as traced by a sample of 1184 spiral, elliptical and S0 galaxies, grouped in 704 objects. We perform a statistical analysis, by calculating the bulk...
Kurtosis as a Non--Gaussian Signature of the Large--Scale Velocity Field (1994)
Catelan, Paolo, Moscardini, Lauro
We discuss the non--linear growth of the kurtosis of the smoothed peculiar velocity field (along an arbitrary direction), in an Einstein--de Sitter universe, induced by Gaussian primordial density...
Testing the Frozen-Flow Approximation (1993)
Melott, Adrian L., Lucchin, Francesco, Matarrese, Sabino, Moscardini, Lauro
We investigate the accuracy of the frozen--flow approximation (FFA), recently proposed by Matarrese \etal (1992), for following the nonlinear evolution of cosmological density fluctuations under...
Kurtosis and Large--Scale Structure (1993)
Catelan, Paolo, Moscardini, Lauro
We discuss the non--linear growth of the excess kurtosis parameter of the smoothed density fluctuation field $\delta$, $S_4\equiv[\lan\delta^{\,4}\ran-3\lan\delta^{\,2}\ran^2]/...