Testing gravity at z=1 -- Christian Marinoni -- Université de Provence, CPT (Marseille)

jeudi 5 juin 2008, 15:30 → 16:30 Europe/Paris

Salle Grossetête

The growth history of galaxy fluctuations is a fundamental cosmological observable which helps in hunting for evidences of new physics potentially crucial for understanding the present-day accelerated expansion of the universe. I'll present the VVDS measurements of the scaling with redshift of the growth factor, variance and skewness of the galaxy density field in the range 0<z<1.5. I'll compare our measurements to theoretical predictions of first- and second-order perturbation theory. I'll conclude by presenting some preliminary results on constraining cosmological parameters using high redshift galaxies and clusters.

Slides MarinoniCPT.pdf