285 citations · 649 across the 12 of their papers we have counts for
12 papers
Second-order matter perturbations in a LambdaCDM cosmology and non-Gaussianity
N. Bartolo, S. Matarrese, O. Pantano +1
We obtain exact expressions for the effect of primordial non-Gaussianity on the matter density perturbation up to second order in a LambdaCDM cosmology, fully accounting for the ge…
Zero metallicity stellar sources and the reionization epoch
P. Cojazzi, A. Bressan, F. Lucchin +2
We reconsider the problem of the cosmological reionization due to stellar sources. Using a method similar to that developed by Haiman & Loeb (1997), we investigate the effect of ch…
Constraining the cosmological baryon density with X-ray clusters
Claudio Gheller, Ornella Pantano, Lauro Moscardini
We study the properties of X-ray galaxy clusters in four cold dark matter models with different baryon fraction ranging from 5 to 20 per cent. By using an original three-d…
A cosmological hydrodynamic code based on the Piecewise Parabolic Method
Claudio Gheller, Ornella Pantano, Lauro Moscardini
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 al…
EVAPORATION OF QUARK DROPS DURING THE COSMOLOGICAL Q-H TRANSITION
L. Rezzolla, J. C. Miller, O. Pantano
We have carried out a study of the hydrodynamics of disconnected quark regions during the final stages of the cosmological quark-hadron transition. A set of relativistic Lagrangian…
COLLISIONAL VERSUS COLLISIONLESS MATTER: A ONE-DIMENSIONAL ANALYSIS OF GRAVITATIONAL CLUSTERING
Claudio Gheller, Lauro Moscardini, Ornella Pantano
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 dar…