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astro-ph.CO2019
Residual Smoothing: Using Mocks to Correct Model Covariance Matrices
Ross O'Connell
Abstract Covariance matrix estimation is a challenging problem in cosmology. Recent work has shown that model covariance matrices can be precise, and that at relatively large scale…
astro-ph.CO2019★ 39 cited
RascalC: A Jackknife Approach to Estimating Single and Multi-Tracer Galaxy Covariance Matrices
Oliver H. E. Philcox, Daniel J. Eisenstein, Ross O'Connell +1
To make use of clustering statistics from large cosmological surveys, accurate and precise covariance matrices are needed. We present a new code to estimate large scale galaxy two-…