Testing backreaction effects with observations (2008)
Larena, Julien, Alimi, Jean--Michel, Buchert, Thomas, Kunz, Martin, Corasaniti, Pier-Stefano
In order to quantitatively test the ability of averaged inhomogeneous cosmologies to correctly describe observations of the large scale properties of the Universe, we introduce a smoothed template...
Exploring the Dark Energy Redshift Desert with the Sandage-Loeb Test (2007)
Corasaniti, Pier-Stefano, Huterer, Dragan, Melchiorri, Alessandro
We study the prospects for constraining dark energy at very high redshift with the Sandage-Loeb (SL) test - a measurement of the evolution of cosmic redshift obtained by taking quasar spectra at...
Parkinson, David, Bassett, Bruce A., Copeland, Edmund J., Corasaniti, Pier-Stefano, Kunz, Martin
Dark energy affects the CMB through its perturbations and affects both CMB and Sn-Ia through its background evolution. Using recent CMB and Sn-Ia data sets, together with the most general...
Perturbations in cosmologies with a scalar field and a perfect fluid (2003)
Bartolo, Nicola, Corasaniti, Pier-Stefano, Liddle, Andrew R., Malquarti, Michaël
We study the properties of cosmological density perturbations in a multi-component system consisting of a scalar field and a perfect fluid. We discuss the number of degrees of freedom completely...
Kunz, Martin, Corasaniti, Pier-Stefano, Parkinson, David, Copeland, Edmund J.
By combining the recent WMAP measurements of the cosmic microwave background anisotropies and the results of the recent luminosity distance measurements to type-Ia supernovae, we find that the...