2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/6877I will briefly present my work on cosmological parameters estimation. Classical methods for parameters estimation involve the exploration of the parameter space on a precalculated grid of cosmological models. Here we try to estimate the cosmological parameters by using a minimization method associated with the interpolation of the C_l spectrum. We first use a simple multidimensional linear interpolation, and show the flaws of this method. We then introduce a new interpolation method, based on a physical description of the location of the acoustic peaks in the power spectrumProceeding XV rencontres de Blois, june 2003. 4 pagesAstrophysicstext