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Published online by Cambridge University Press: 10 December 2020
This chapter is devoted to parameter estimation. We first discuss the physical dependence of CMB anisotropies on cosmological parameters. After a section on CMB data we then treat in some detail statistical methods for CMB data analysis. We discuss especially the Fisher matrix and explain Markov chain Monte Carlo methods. We also address degeneracies, combinations of cosmological parameters on which CMB anisotropies and polarization depend only weakly. Because of these degeneracies, cosmological parameter estimation also makes use of other, non CMB related, observations especially observations related to the large scale matter distribution. We summarize them and other cosmological observations in two separate sections.
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