1.3k citations · 7.4k across the 101 of their papers we have counts for
6 papers · 1 filter
Peculiar acceleration
Luca Amendola, Claudia Quercellini, Amedeo Balbi
It has been proposed recently to observe the change in cosmological redshift of distant galaxies or quasars with the next generation of large telescope and ultra-stable spectrograp…
Spherical Needlets for CMB Data Analysis
D. Marinucci, D. Pietrobon, A. Balbi +6
We discuss Spherical Needlets and their properties. Needlets are a form of spherical wavelets which do not rely on any kind of tangent plane approximation and enjoy good localizati…
Affine equation of state from quintessence and k-essence fields
Claudia Quercellini, Marco Bruni, Amedeo Balbi
We explore the possibility that a scalar field with appropriate Lagrangian can mimic a perfect fluid with an affine barotropic equation of state. The latter can be thought of as a…
The time evolution of cosmological redshift as a test of dark energy
A. Balbi, C. Quercellini
The variation of the expansion rate of the Universe with time produces an evolution in the cosmological redshift of distant sources (for example quasar Lyman- absorption lines),…
Making Maps from Planck LFI 30GHz Data
M. A. J. Ashdown, C. Baccigalupi, A. Balbi +16
This paper is one of a series describing the performance and accuracy of map-making codes as assessed by the Planck CTP working group. We compare the performance of multiple codes…
DM: Observational constraints on unified dark matter with constant speed of sound
Amedeo Balbi, Marco Bruni, Claudia Quercellini
We consider the hypothesis that dark energy and dark matter are the two faces of a single dark component, a unified dark matter (UDM) that we assume can be modeled by the affine eq…