Bartolo, Nicola, Dimastrogiovanni, Emanuela, Matarrese, Sabino, Riotto, Antonio
Motivated by the interest in models of the early universe where statistical isotropy is broken and can be revealed in cosmological observations, we consider an SU(2) theory of gauge interactions in a...
Detectability of the effect of Inflationary non-Gaussianity on halo bias (2009)
Verde, Licia, Matarrese, Sabino
We consider the description of the clustering of halos for physically-motivated types of non-Gaussian initial conditions. In particular we include non-Gaussianity of the type arising from single...
The High Redshift Integrated Sachs-Wolfe Effect (2009)
Xia, Jun-Qing, Viel, Matteo, Baccigalupi, Carlo, Matarrese, Sabino
In this paper we rely on the quasar (QSO) catalog of the Sloan Digital Sky Survey Data Release Six (SDSS DR6) of about one million photometrically selected QSOs to compute the Integrated Sachs-Wolfe...
Anisotropic bispectrum of curvature perturbations from primordial non-Abelian vector fields (2009)
Bartolo, Nicola, Dimastrogiovanni, Emanuela, Matarrese, Sabino, Riotto, Antonio
We consider a primordial SU(2) vector multiplet during inflation in models where quantum fluctuations of vector fields are involved in producing the curvature perturbation. Recently, a lot of...
Anisotropic bispectrum of curvature perturbations from primordial non-Abelian vector fields (2009)
Bartolo, Nicola, Dimastrogiovanni, Emanuela, Matarrese, Sabino, Riotto, Antonio
We consider a primordial SU(2) vector multiplet during inflation in models where quantum fluctuations of vector fields are involved in producing the curvature perturbation. Recently, a lot of...
Directional Variations of the Non-Gaussianity Parameter f_NL (2009)
Rudjord, Øystein, Hansen, Frode K., Lan, Xiaohong, Liguori, Michele, Marinucci, Domenico, Matarrese, Sabino
We investigate local variations of the primordial non-Gaussianity parameter f_NL in the WMAP data, looking for possible influence of foreground contamination in the full-sky estimate of f_NL. We...
Nitta, Daisuke, Komatsu, Eiichiro, Bartolo, Nicola, Matarrese, Sabino, Riotto, Antonio
We calculate the bispectrum of the Cosmic Microwave Background (CMB) temperature anisotropies induced by the second-order fluctuations in the Boltzmann equation. In this paper, which is one of a...
Observing the Evolution of the Universe (2009)
Aguirre, James, Amblard, Alexandre, Ashoorioon, Amjad, Baccigalupi, Carlo, Balbi, Amedeo, Bartlett, James, ...
How did the universe evolve? The fine angular scale (l>1000) temperature and polarization anisotropies in the CMB are a Rosetta stone for understanding the evolution of the universe. Through detailed...
Cosmological background solutions and cosmological backreactions (2009)
Kolb, Edward W., Marra, Valerio, Matarrese, Sabino
The cosmological backreaction proposal, which attempts to account for observations without a primary dark energy source in the stress-energy tensor, has been developed and discussed by means of...
Rudjord, Oystein, Hansen, Frode K., Lan, Xiaohong, Liguori, Michele, Marinucci, Domenico, Matarrese, Sabino
We use the full bispectrum of spherical needlets applied to the WMAP data of the cosmic microwave background as an estimator for the primordial non-Gaussianity parameter f_NL. We use needlet scales...
Lensed CMB temperature and polarization maps from the Millennium Simulation (2009)
Carbone, Carmelita, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino, Springel, Volker
CMBPol Mission Concept Study: Probing Inflation with CMB Polarization (2008)
Baumann, Daniel, Jackson, Mark G, Adshead, Peter, Amblard, Alexandre, Ashoorioon, Amjad, Bartolo, Nicola, ...
We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of inflation. We focus on the prospects for using CMB measurements to...
CMBPol Mission Concept Study: Probing Inflation with CMB Polarization (2008)
Baumann, Daniel, Jackson, Mark G., Adshead, Peter, Amblard, Alexandre, Ashoorioon, Amjad, Bartolo, Nicola, ...
We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of inflation. We focus on the prospects for using CMB measurements to...
Lensed CMB temperature and polarization maps from the Millennium Simulation (2008)
Carbone, Carmelita, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino, Springel, Volker
We have constructed the first all-sky CMB temperature and polarization lensed maps based on a high-resolution cosmological N-body simulation, the Millennium Simulation (MS). We have exploited the...
Full-sky maps for gravitational lensing of the cosmic microwave background (2008)
Carbone, Carmelita, Springel, Volker, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino
We use the large cosmological Millennium Simulation (MS) to construct the first all-sky maps of the lensing potential and the deflection angle, aiming at gravitational lensing of the CMB, with the...
Raccanelli, A., Bonaldi, Anna, Negrello, Mattia, Matarrese, Sabino, Tormen, Giuseppe, De Zotti, Gianfranco
We reassess the estimate of the cross-correlation of the spatial distribution of the NRAO VLA Sky Survey (NVSS) radio sources with that of Cosmic Microwave Background (CMB) anisotropies from the...
How the Scalar Field of Unified Dark Matter Models Can Cluster (2008)
Bertacca, Daniele, Bartolo, Nicola, Diaferio, Antonaldo, Matarrese, Sabino
We use scalar-field Lagrangians with a non-canonical kinetic term to obtain unified dark matter models where both the dark matter and the dark energy, the latter mimicking a cosmological constant,...
Kolb, Edward W., Marra, Valerio, Matarrese, Sabino
It has been argued that the spacetime of our universe can be accurately described by a perturbed conformal Newtonian metric, and hence even large density inhomogeneities in a dust universe can not...
Non-Gaussian halo bias and future galaxy surveys (2008)
Carbone, Carmelita, Verde, Licia, Matarrese, Sabino
We forecast constraints on primordial non-Gaussianity achievable from forthcoming surveys by exploiting the scale-dependent halo bias introduced on large scales by non-Gaussian initial conditions. We...
Hikage, Chiaki, Matsubara, Takahiko, Coles, Peter, Liguori, Michele, Hansen, Frode K., Matarrese, Sabino
We present an analysis of the Minkowski Functionals (MFs) describing the WMAP three-year temperature maps to place limits on possible levels of primordial non-Gaussianity. In particular, we apply...
The effect of primordial non-Gaussianity on halo bias (2008)
Matarrese, Sabino, Verde, Licia
It has long been known how to analytically relate the clustering properties of the collapsed structures (halos) to those of the underlying dark matter distribution for Gaussian initial conditions....
CMB temperature anisotropies from third-order gravitational perturbations (2008)
D'Amico, Guido, Bartolo, Nicola, Matarrese, Sabino, Riotto, Antonio
In this paper we present a complete computation of the Cosmic Microwave Background (CMB) anisotropies up to third order from gravitational perturbations accounting for scalar, vector and tensor...
Full-sky maps for gravitational lensing of the cosmic microwave background (2008)
Carbone, Carmelita, Springel, Volker, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino
Halos of Unified Dark Matter Scalar Field (2007)
Bertacca, Daniele, Bartolo, Nicola, Matarrese, Sabino
We investigate the static and spherically symmetric solutions of Einstein's equations for a scalar field with non-canonical kinetic term, assumed to provide both the dark matter and dark energy...
Yadav, Amit P. S., Komatsu, Eiichiro, Wandelt, Benjamin D., Liguori, Michele, Hansen, Frode K., Matarrese, Sabino
In our recent paper (Yadav et al. 2007) we described a fast cubic (bispectrum) estimator of the amplitude of primordial non-Gaussianity of local type, f_{NL}, from a combined analysis of the Cosmic...
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...
Post--Newtonian Cosmological Dynamics (2007)
Sabino Matarrese, David Terranova
The non--linear dynamics of self--gravitating collisionless matter with vanishing vorticity is studied in a general relativistic framework, using synchronous and comoving (i.e. Lagrangian)...
Full-sky maps for gravitational lensing of the CMB (2007)
Carbone, Carmelita, Springel, Volker, Baccigalupi, Carlo, Bartelmann, Matthias, Matarrese, Sabino
We use the large cosmological Millennium Simulation (MS) to construct the first all-sky maps of the lensing potential and the deflection angle, aiming at gravitational lensing of the CMB, with the...
Light-cone averages in a swiss-cheese universe (2007)
Marra, Valerio, Kolb, Edward W., Matarrese, Sabino
We analyze a toy swiss-cheese cosmological model to study the averaging problem. In our model, the cheese is the EdS model and the holes are constructed from a LTB solution. We study the propagation...
Stochastic gravitational wave background from cold dark matter halos (2007)
Carbone, Carmelita, Baccigalupi, Carlo, Matarrese, Sabino
The current knowledge of cosmological structure formation suggests that Cold Dark Matter (CDM) halos possess a nonspherical density profile, implying that cosmic structures can be potential sources...
Temperature and Polarization CMB Maps from Primordial non-Gaussianities of the Local Type (2007)
Liguori, Michele, Yadav, Amit, Hansen, Frode K., Komatsu, Eiichiro, Matarrese, Sabino, Wandelt, Benjamin
The forthcoming Planck experiment will provide high sensitivity polarization measurements that will allow us to further tighten the f_NL bounds from the temperature data. Monte Carlo simulations of...
On cosmological observables in a swiss-cheese universe (2007)
Marra, Valerio, Kolb, Edward W., Matarrese, Sabino, Riotto, Antonio
Photon geodesics are calculated in a swiss-cheese model, where the cheese is made of the usual Friedmann-Robertson-Walker solution and the holes are constructed from a Lemaitre-Tolman-Bondi solution...
Cosmic Microwave Background Anisotropies up to Second Order (2007)
Bartolo, Nicola, Matarrese, Sabino, Riotto, Antonio
These lecture notes present the computation of the full system of Boltzmann equations describing the evolution of the photon, baryon and cold dark matter fluids up to second order in perturbation...
Resumming Cosmic Perturbations (2007)
Matarrese, Sabino, Pietroni, Massimo
Renormalization Group (RG) techniques have been successfully employed in quantum field theory and statistical physics. Here we apply RG methods to study the non-linear stages of structure formation...
Cosmic Microwave Background Anisotropies up to Second Order (2007)
Bartolo, Nicola, Matarrese, Sabino, Riotto, Antonio
These lecture notes present the computation of the full system of Boltzmann equations describing the evolution of the photon, baryon and cold dark matter fluids up to second order in perturbation...
B-mode polarization of the CMB from the second-order photon quadrupole (2007)
Bartolo, Nicola, Matarrese, Sabino, Mollerach, Silvia, Riotto, Antonio
We study a new contribution to the polarization of the Cosmic Microwave Background induced at the epoch of recombination by the second-order quadrupole moment of the photon distribution. At second...
Unified Dark Matter in Scalar Field Cosmologies (2007)
Bertacca, Daniele, Matarrese, Sabino, Pietroni, Massimo
Considering the general Lagrangian of k-essence models, we study and classify them through variables connected to the fluid equation of state parameter w_\kappa. This allows to find solutions around...
Baryonic Acoustic Oscillations via the Renormalization Group (2007)
Matarrese, Sabino, Pietroni, Massimo
A semi-analytic approach to the computation of the non-linear power-spectrum of dark matter density fluctuations is proposed. The method is based on the Renormalization Group technique and can be...
The bispectrum of redshifted 21-cm fluctuations from the dark ages (2006)
Pillepich, Annalisa, Porciani, Cristiano, Matarrese, Sabino
Brightness-temperature fluctuations in the redshifted 21-cm background from the cosmic dark ages are generated by irregularities in the gas-density distribution and can then be used to determine the...
CMB Anisotropies at Second-Order II: Analytical Approach (2006)
Bartolo, Nicola, Matarrese, Sabino, Riotto, Antonio
We provide an analytical approach to the second-order Cosmic Microwave Background (CMB) anisotropies generated by the non-linear dynamics taking place at last scattering. We study the acoustic...
Can sterile neutrinos be ruled out as warm dark matter candidates? (2006)
Viel, Matteo, Lesgourgues, Julien, Haehnelt, Martin G., Matarrese, Sabino, Riotto, Antonio
We present constraints on the mass of warm dark matter (WDM) particles from a combined analysis of the matter power spectrum inferred from the Sloan Digital Sky Survey \lya flux power spectrum at 2.2
Stochastic gravitational wave background from cold dark matter halos (2005)
Carbone, Carmelita, Baccigalupi, Carlo, Matarrese, Sabino
The current knowledge of cosmological structure formation suggests that Cold Dark Matter (CDM) halos possess a nonspherical density profile, implying that cosmic structures can be potential sources...
Baldi, Marco, Finelli, Fabio, Matarrese, Sabino
Inflation may have been driven by a component which violated the Null-Energy Condition, thereby leading to {\it super inflation}. We provide the formalism to study cosmological perturbations when...
Primordial inflation explains why the universe is accelerating today (2005)
Kolb, Edward W., Matarrese, Sabino, Notari, Alessio, Riotto, Antonio
We propose an explanation for the present accelerated expansion of the universe that does not invoke dark energy or a modification of gravity and is firmly rooted in inflationary cosmology.
Barausse, Enrico, Matarrese, Sabino, Riotto, Antonio
The luminosity distance-redshift relation is one of the fundamental tools of modern cosmology. We compute the luminosity distance-redshift relation in a perturbed flat matter-dominated Universe,...
CMB lensing extraction and primordial non-Gaussianity (2004)
Lesgourgues, Julien, Liguori, Michele, Matarrese, Sabino, Riotto, Antonio
The next generation of CMB experiments should get a better handle on cosmological parameters by mapping the weak lensing deflection field, which is separable from primary anisotropies thanks to the...
Cosmological influence of super-Hubble perturbations (2004)
Kolb, Edward W., Matarrese, Sabino, Notari, Alessio, Riotto, Antonio
The existence of cosmological perturbations of wavelength larger than the Hubble radius is a generic prediction of the inflationary paradigm. We provide the derivation beyond perturbation theory of a...
Effect of inhomogeneities on the expansion rate of the Universe (2004)
Kolb, Edward W., Matarrese, Sabino, Notari, Alessio, Riotto, Antonio
While the expansion rate of a homogeneous isotropic Universe is simply proportional to the square-root of the energy density, the expansion rate of an inhomogeneous Universe also depends on the...
Unified treatment of cosmological perturbations from super-horizon to small scales (2004)
Carbone, Carmelita, Matarrese, Sabino
We study the evolution of cosmological perturbations, using a hybrid approximation scheme which upgrades the weak-field limit of Einstein's field equations to account for post-Newtonian scalar and...
Approaching Lambda without fine-tuning (2004)
Matarrese, Sabino, Baccigalupi, Carlo, Perrotta, Francesca
We address the fine-tuning problem of dark energy cosmologies which arises when the dark energy density needs to initially lie in a narrow range in order for its present value to be consistent with...
Influence of Super-Horizon Scales on Cosmological Observables Generated during Inflation (2003)
Matarrese, Sabino, Musso, Marcello A., Riotto, Antonio
Using the techniques of out-of-equilibrium field theory, we study the influence on the properties of cosmological perturbations generated during inflation on observable scales coming from...
CMB polarization from secondary vector and tensor modes (2003)
Mollerach, Silvia, Harari, Diego, Matarrese, Sabino
We consider a novel contribution to the polarization of the Cosmic Microwave Background induced by vector and tensor modes generated by the non-linear evolution of primordial scalar perturbations....
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...
Matarrese, Sabino, Riotto, Antonio
We present a gauge-invariant formalism to study the evolution of the curvature and entropy perturbations in the case in which spatial and time variations of the inflaton decay rate into ordinary...
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...
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
An Observational Test of Two-field Inflation (2002)
Wands, David, Bartolo, Nicola, Matarrese, Sabino, Riotto, Antonio
We study adiabatic and isocurvature perturbation spectra produced by a period of cosmological inflation driven by two scalar fields. We show that there exists a model-independent consistency...
What's behind acoustic peaks in the cosmic microwave background anisotropies (2002)
Baccigalupi, Carlo, Balbi, Amedeo, Matarrese, Sabino, Perrotta, Francesca, Vittorio, Nicola
We give a brief review of the physics of acoustic oscillations in Cosmic Microwave Background (CMB) anisotropies. As an example of the impact of their detection in cosmology, we show how the present...
Baccigalupi, Carlo, Balbi, Amedeo, Matarrese, Sabino, Perrotta, Francesca, Vittorio, Nicola
We constrain cosmological parameters in flat cosmologies with tracking dark energy (or Quintessence) using the existing data on Cosmic Microwave Background (CMB) anisotropies. We perform a maximum...
The 2dF Galaxy Redshift Survey: the bias of galaxies and the density of the Universe (2002)
Verde, Licia, Heavens, Alan F., Percival, Will J., Matarrese, Sabino, Baugh, Carlton, Bland-Hawthorn, Joss, ...
We compute the bispectrum of the 2dF Galaxy Redshift Survey (2dFGRS) and use it to measure the bias parameter of the galaxies. This parameter quantifies the strength of clustering of the galaxies...
The 2dF Galaxy Redshift Survey: the bias of galaxies and the density of the Universe (2002)
Verde, Licia, Heavens, Alan F., Percival, Will J., Matarrese, Sabino, Baugh, Carlton, Bland-Hawthorn, Joss, ...
We compute the bispectrum of the 2dF Galaxy Redshift Survey (2dFGRS) and use it to measure the bias parameter of the galaxies. This parameter quantifies the strength of clustering of the galaxies...
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...
The 2dF Galaxy Redshift Survey: The bias of galaxies and the density of the Universe (2001)
Verde, Licia, Heavens, Alan F., Percival, Will J., Matarrese, Sabino, Baugh, C. M., Bland-Hawthorn, J., ...
We compute the bispectrum of the 2dF Galaxy Redshift Survey (2dFGRS) and use it to measure the bias parameter of the galaxies. This parameter quantifies the strength of clustering of the galaxies...
A reconstruction of the initial conditions of the Universe by optimal mass transportation (2001)
Frisch, Uriel, Matarrese, Sabino, Mohayaee, Roya, Sobolevski, Andrei
Reconstructing the density fluctuations in the early Universe that evolved into the distribution of galaxies we see today is a challenge of modern cosmology [ref.]. An accurate reconstruction would...
Baccigalupi, Carlo, Balbi, Amedeo, Matarrese, Sabino, Perrotta, Francesca, Vittorio, Nicola
We constrain cosmological parameters in flat cosmologies with tracking dark energy (or Quintessence) using the existing data on Cosmic Microwave Background (CMB) anisotropies. We perform a maximum...
The growth of structure in the intergalactic medium (2001)
Matarrese, Sabino, Mohayaee, Roya
A {\it stochastic adhesion} model is introduced, with the purpose of describing the formation and evolution of mildly nonlinear structures, such as sheets and filaments, in the intergalactic medium...
Tests for primordial non-Gaussianity (2000)
Verde, Licia, Jimenez, Raul, Kamionkowski, Marc, Matarrese, Sabino
We investigate the relative sensitivities of several tests for deviations from Gaussianity in the primordial distribution of density perturbations. We consider models for non-Gaussianity that mimic...
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...
Tracking Extended Quintessence (2000)
Baccigalupi, Carlo, Matarrese, Sabino, Perrotta, Francesca
We study the cosmological role of a Tracking Field $\phi$ in Extended Quintessence scenarios (TEQ), where the dynamical vacuum energy driving the acceleration of the universe today is coupled with...
Extended Quintessence: imprints on the cosmic microwave background spectra (2000)
Baccigalupi, Carlo, Perrotta, Francesca, Matarrese, Sabino
We describe the observable features of the recently proposed Extended Quintessence scenarios on the Cosmic Microwave Background (CMB) anisotropy spectra. In this class of models a scalar field...
Projected bispectrum in spherical harmonics and its application to angular galaxy catalogues (2000)
Verde, Licia, Heavens, Alan F., Matarrese, Sabino
We present a theoretical and exact analysis of the bispectrum of projected galaxy catalogues. The result can be generalized to evaluate the projection in spherical harmonics of any 3D bispectrum and...
Gravitational waves from cosmological compact binaries (2000)
Schneider, Raffaella, Ferrari, Valeria, Matarrese, Sabino, Zwart, Simon F. Portegies
We consider gravitational waves emitted by various populations of compact binaries at cosmological distances. We use population synthesis models to characterize the properties of double neutron...
The abundance of high-redshift objects as a probe of non-Gaussian initial conditions (2000)
Matarrese, Sabino, Verde, Licia, Jimenez, Raul
The observed abundance of high-redshift galaxies and clusters contains precious information about the properties of the initial perturbations. We present a method to compute analytically the number...
Tracking extended quintessence (2000)
Baccigalupi, Carlo, Matarrese, Sabino, Perrotta, Francesca
We study the cosmological role of a Tracking Field $\phi$ in Extended Quintessence scenarios (TEQ), where the dynamical vacuum energy driving the acceleration of the universe today is coupled with...
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...
Perrotta, Francesca, Baccigalupi, Carlo, Matarrese, Sabino
We study Quintessence cosmologies in the context of scalar-tensor theories of gravity, where a scalar field $\phi$, assumed to provide most of the cosmic energy density today, is non-minimally...
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...
Schneider, Raffaella, Ferrari, Valeria, Matarrese, Sabino
Astrophysical sources of gravitational radiation are likely to have been formed since the beginning of star formation. Realistic source rates of formation throughout the Universe have been estimated...
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...
Perrotta, Francesca, Baccigalupi, Carlo, Matarrese, Sabino
We study Quintessence cosmologies in the context of scalar-tensor theories of gravity, where a scalar field $\phi$, assumed to provide most of the cosmic energy density today, is non-minimally...
Ferrari, Valeria, Matarrese, Sabino, Schneider, Raffaella
We estimate the spectral properties of the stochastic background of gravitational radiation emitted by a cosmological population of hot, young, rapidly rotating neutron stars. Their formation rate as...
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...
Gravitational Wave Background from a Cosmological Population of Core-Collapse Supernovae (1998)
Ferrari, Valeria, Matarrese, Sabino, Schneider, Raffaella
We analyse the stochastic background of gravitational radiation emitted by a cosmological population of core-collapse supernovae. The supernova rate as a function of redshift is deduced from an...
On the spatial distribution of dark matter halos (1998)
Catelan, Paolo, Matarrese, Sabino, Porciani, Cristiano
We study the spatial distribution of dark matter halos in the Universe in terms of their number density contrast, related to the underlying dark matter fluctuation via a non-local and non-linear bias...
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...
Excursion set approach to the clustering of dark matter haloes in Lagrangian space (1998)
Porciani, Cristiano, Matarrese, Sabino, Lucchin, Francesco, Catelan, Paolo
We present a stochastic approach to the spatial clustering of dark matter haloes in Lagrangian space. Our formalism is based on a local formulation of the `excursion set' approach by Bond et al.,...
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...
Matarrese, Sabino, Mollerach, Silvia
The cosmological stochastic gravitational-wave background produced by the mildly non-linear evolution of density fluctuations is analyzed, in the frame of an Einstein-de Sitter model, by means of a...
Cosmic Microwave Background anisotropies from second order gravitational perturbations (1997)
Mollerach, Silvia, Matarrese, Sabino
This paper presents a complete analysis of the effects of second order gravitational perturbations on Cosmic Microwave Background anisotropies, taking explicitly into account scalar, vector and...
Bruni, Marco, Matarrese, Sabino, Mollerach, Silvia, Sonego, Sebastiano
We consider in detail the problem of gauge dependence that exists in relativistic perturbation theory, going beyond the linear approximation and treating second and higher order perturbations. We...
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...
Non--Linear Evolution of Cosmological Perturbations (1996)
In these lecture notes I review the theory of the non--linear evolution of cosmological perturbations in a self--gravitating collisionless medium, with vanishing vorticity. The problem is first...
Relativistic Cosmology: from super--horizon to small scales (1996)
The general relativistic non--linear dynamics of a self--gravitating collisionless fluid with vanishing vorticity is studied in synchronous and comoving -- i.e. {\em Lagrangian} -- coordinates....
Lagrangian Dynamics of Collisionless Matter (1996)
Matarrese, Sabino, Terranova, David
The non--linear dynamics of self--gravitating irrotational dust is analyzed in a general relativistic framework, using synchronous and comoving coordinates. Writing the equations in terms of the...
Post-Newtonian Cosmological Dynamics in Lagrangian coordinates (1995)
Matarrese, Sabino, Terranova, David
The non-linear dynamics of irrotational dust in General Relativity is studied in synchronous and comoving coordinates. All the equations are written in terms of the metric tensor of spatial sections...
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...
Mollerach, Silvia, Gangui, Alejandro, Lucchin, Francesco, Matarrese, Sabino
We compute the contribution to the three--point temperature correlation function of the Cosmic Microwave Background coming from the non--linear evolution of Gaussian initial perturbations, as...
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...
General Relativistic Dynamics of Irrotational Dust: Cosmological Implications (1993)
Matarrese, Sabino, Pantano, Ornella, Saez, Diego
The non--linear dynamics of cosmological perturbations of an irrotational collisionless fluid is analyzed within General Relativity. Relativistic and Newtonian solutions are compared, stressing the...
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...
The Aharonov-Bohm effect in curved space-time (1982)
Matarrese, Sabino, Vedovato, Gabriele, Marchetti, Pier Alberto
We study the second order equation for Dirac particles in curved space-time. To first order in a W.K.B. expansion we obtain the non-integrable phase factor of gravity containing the spin-connections...