Tracing the sound horizon scale with photometric redshift surveys
Proceedings of the 9th Scientific Meeting of the Spanish Astronomical Society - Highlights of Spanish Astrophysics VI, SEA 2010 (2010) 703-708
Authors:
A Carnero-Rosell, E Sánchez, J García-Bellido, E Gaztañaga, F de Simoni, M Crocce, A Cabré, P Fosalba, D Alonso
Abstract:
We propose a novel method for the extraction of the baryonic acoustic oscillation scale in galaxy photometric surveys. The evolution of this scale can be used as a standard ruler in order to constrain cosmological parameters. The method consists in parametrize the angular correlation function ω(θ), with a simple analitical expresion, in order to extract the sound horizon scale. The method has been tested in the MICE simulation, one of the largest N-body simulation to date. We have considered projection effects, non-linearities and observational effects in our analysis, obtaining errors in cosmological parameters in agreement with what is expected in new generation surveys.
