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C_l interpolation for cosmological parameter estimation

Stephane Bargot
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Abstract

I 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 spectrum

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Stephane Bargot. 2003-10-27. C_l interpolation for cosmological parameter estimation. https://arxiv.org/abs/astro-ph/0310754

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