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OATS-DAUT SEMINAR
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Speaker: Christian Marinoni (Centre de Physique Théorique, Marseille, F)

Title: Testing gravity and cosmological models at z=1

Date: Wednesday, April 8th, 2009
Time: 12:00
Venue: Villa Bazzoni

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Abstract:
The growth history of galaxy fluctuations is a fundamental 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 also show preliminary results on constraining cosmological parameters using the rotational kinematics of high redshift galaxies and the abundance of clusters detected in deep redshift surveys.
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contact: Pierluigi Monaco (OATS)