4 papers
Bye binormal: analysing the joint PDF of galaxy density and weak lensing convergence
Oliver Friedrich, Lina Castiblanco, Anik Halder +1
At any given scale, 32-point statistics extract only three numbers from the joint distribution of the cosmic matter density and galaxy density fluctuations: their variances…
Informed total-error-minimizing priors: Interpretable cosmological parameter constraints despite complex nuisance effects
Bernardita Ried Guachalla, Dylan Britt, Daniel Gruen +1
While Bayesian inference techniques are standard in cosmological analyses, it is common to interpret resulting parameter constraints with a frequentist intuition. This intuition ca…
Cosmology on point: modelling spectroscopic tracer one-point statistics
Beth McCarthy Gould, Lina Castiblanco, Cora Uhlemann +1
The 1-point matter density probability distribution function (PDF) captures some of the non-Gaussian information lost in standard 2-point statistics. The matter PDF can be well pre…
Simulation-based inference has its own Dodelson-Schneider effect (but it knows that it does)
Jed Homer, Oliver Friedrich, Daniel Gruen
Making inferences about physical properties of the Universe requires knowledge of the data likelihood. A Gaussian distribution is commonly assumed for the uncertainties with a cova…