18 citations · 50 across the 4 of their papers we have counts for
4 papers · 1 filter
Euclid preparation. LII. Forecast impact of super-sample covariance on 3x2pt analysis with Euclid
Euclid Collaboration, D. Sciotti, S. Gouyou Beauchamps +221
Deviations from Gaussianity in the distribution of the fields probed by large-scale structure surveys generate additional terms in the data covariance matrix, increasing the uncert…
Euclid: Covariance of weak lensing pseudo- estimates. Calculation, comparison to simulations, and dependence on survey geometry
R. E. Upham, M. L. Brown, L. Whittaker +102
An accurate covariance matrix is essential for obtaining reliable cosmological results when using a Gaussian likelihood. In this paper we study the covariance of pseudo- es…
Sufficiency of a Gaussian power spectrum likelihood for accurate cosmology from upcoming weak lensing surveys
Robin E. Upham, Michael L. Brown, Lee Whittaker
We investigate whether a Gaussian likelihood is sufficient to obtain accurate parameter constraints from a Euclid-like combined tomographic power spectrum analysis of weak lensing,…
Exact joint likelihood of pseudo- estimates from correlated Gaussian cosmological fields
Robin E. Upham, Lee Whittaker, Michael L. Brown
We present the exact joint likelihood of pseudo- power spectrum estimates measured from an arbitrary number of Gaussian cosmological fields. Our method is applicable to bot…