2 citations · 2 across the 2 of their papers we have counts for
17 papers · 1 filter
Scaling solutions in scalar-tensor cosmologies
Valeria Pettorino, Carlo Baccigalupi, Francesca Perrotta
The possibility of a connection between dark energy and gravity through a direct coupling in the Lagrangian of the underlying theory has acquired an increasing interest due to the…
VST - VLT Survey Telescope Integration Status
C. Belfiore, M. Brescia, M. Capaccioli +20
The VLT Survey Telescope (VST) is a 2.6m aperture, wide field, UV to I facility, to be installed at the European Southern Observatory (ESO) on the Cerro Paranal Chile. VST was prim…
Structure formation constraints on the Jordan-Brans-Dicke theory
Viviana Acquaviva, Carlo Baccigalupi, Samuel M. Leach +2
We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory…
Instability of Chaplygin gas trajectories in unified dark matter models
F. Perrotta, S. Matarrese, M. Torki
In the past few years, the Chaplygin gas (CG) has been considered as an appealing candidate for unifying dark matter and dark energy into a single substance. This picture had to fa…
Weak lensing and gravity theories
Viviana Acquaviva, Carlo Baccigalupi, Francesca Perrotta
We present the theory of weak gravitational lensing in cosmologies with generalized gravity, described in the Lagrangian by a generic function depending on the Ricci scalar and a n…
Strong lensing by cluster-sized haloes in dark-energy cosmologies
Massimo Meneghetti, Matthias Bartelmann, Klaus Dolag +4
We study the efficiency of numerically simulated galaxy clusters for producing strong gravitational lensing events in different dark-energy cosmologies with constant and time-varia…