Cosmic complementarity: combining CMB and supernova observations
Max Tegmark, Daniel J. Eisenstein, Wayne Hu
Abstract
We compute the accuracy with which Omega and Lambda can be measured by combining future SN Ia and CMB experiments, deriving a handy expression for the SN Ia Fisher information matrix. The two data sets are found to be highly complementary: a joint analysis reduces the error bars by more than an order of magnitude compared to a separate analysis of either data set.
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