66 citations · 136 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2017★ 11 cited
On the use of the Edgeworth expansion in cosmology I: how to foresee and evade its pitfalls
Elena Sellentin, Andrew H. Jaffe, Alan F. Heavens
Non-linear gravitational collapse introduces non-Gaussian statistics into the matter fields of the late Universe. As the large-scale structure is the target of current and future o…
astro-ph.CO2017★ 66 cited
Massive data compression for parameter-dependent covariance matrices
Alan Heavens, Elena Sellentin, Damien de Mijolla +1
We show how the massive data compression algorithm MOPED can be used to reduce, by orders of magnitude, the number of simulated datasets that are required to estimate the covarianc…
astro-ph.CO2017★ 59 cited
On the insufficiency of arbitrarily precise covariance matrices: non-Gaussian weak lensing likelihoods
Elena Sellentin, Alan F. Heavens
We investigate whether a Gaussian likelihood, as routinely assumed in the analysis of cosmological data, is supported by simulated survey data. We define test statistics, based on…