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Centro de Astrofísica da Universidade do Porto
22-26 August 2011, Porto, Portugal

 

BAO simulation dedicated to the Large Synoptic Survey Telescope
Gorecki, Alexia (LPSC/IN2P3/CNRS/Université de Grenoble)

The LSST project (Large Synoptic Survey Telescope) will produce one of the main Large Scale Structures surveys of the next decade. Such galaxy catalogs will be used to study the baryonic acoustic oscillations (BAO) that are known to be a powerful probe of the detailed features of the accelerated expansion of the Universe. I will present the LSST experiment, as well as the simulation and analysis pipeline that we have developed. I will focus specially on the photometric redshifts reconstruction. The validation of the photometric redshifts computation with CFHTLS real data will be presented. The photo-z uncertainties impact on the BAO scale determination and the resulting constrain on dark energy parameters will finally be shown.