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What is DESI 2024 Covariance Validation Analysis about?

This document compares analytical and empirical methods for estimating covariance matrices in cosmological analyses, specifically for the Dark Energy Spectroscopic Instrument (DESI) 2024 results. It finds that while analytical estimates perform well for Baryon Acoustic Oscillation (BAO) analyses, they fall short in Full-Shape analyses, necessitating a corrected mock covariance approach. The study aims to improve the accuracy of cosmological parameter estimates by addressing potential biases in covariance ma

Author

jiaoyulin123456

Language

EN