Semboloni, Elisabetta, Tereno, Ismael, Van Waerbeke, Ludovic, Heymans, Catherine
The current methods available to estimate gravitational shear from astronomical images of galaxies introduce systematic errors which can affect the accuracy of weak lensing cosmological constraints....
CFHTLS weak-lensing constraints on the neutrino masses (2008)
Tereno, Ismael, Schimd, Carlo, Uzan, Jean-Philippe, Kilbinger, Martin, Vincent, Frederic H., Fu, Liping
We use measurements of cosmic shear from CFHTLS, combined with WMAP-5 cosmic microwave background anisotropy data, baryonic acoustic oscillations from SDSS and 2dFGRS and supernovae data from SNLS...
DEFINING A TEST PARTICLE'S VELOCITY AT THE SCHWARZSCHILD HORIZON (2007)
It is often argued that, in a stationary space-time, the velocity relative to stationary observers has direct physical signicance. In the Schwarzschild eld case, in the static reference frame at rest...
Scalar-field quintessence by cosmic shear: CFHT data analysis and forecasts for DUNE (2006)
A light scalar field, minimally or not-minimally coupled to the metric field, is a well-defined candidate for the dark energy, overcoming the coincidence problem intrinsic to the cosmological...
Schimd, Carlo, Tereno, Ismael, Uzan, Jean-Philippe, Mellier, Yannick, Van Waerbeke, Ludovic, Semboloni, Elisabetta, ...
Dark energy can be investigated in two complementary ways, by considering either general parameterizations or physically well-defined models. Following the second route, we explore the constraints on...
Another view on the velocity at the Schwarzschild horizon (1999)
It is shown that a timelike radial geodesic does not become null at the event horizon
Velocity at the Schwarzschild horizon revisited (1999)
The question of the physical reality of the black hole interior is a recurrent one. An objection to its existence is the well known fact that the velocity of a material particle, refered to the...