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9 papers · 2 filters
The cumulant generating function as a novel observable to cumulate weak lensing information
Aoife Boyle, Alexandre Barthelemy, Sandrine Codis +2
Key non-Gaussian properties of cosmological fields can be captured by their one-point statistics, providing a complement to two-point statistical measurements from power spectra or…
Starlet higher order statistics for galaxy clustering and weak lensing
Virginia Ajani, Joachim Harnois-Déraps, Valeria Pettorino +1
We present a first application to photometric galaxy clustering and weak lensing of wavelet based multi-scale higher order summary statistics: starlet peak counts and starlet $\ell…
Computing First-Passage Times with the Functional Renormalisation Group
Gerasimos Rigopoulos, Ashley Wilkins
We use Functional Renormalisation Group (FRG) techniques to analyse the behaviour of a spectator field, , during inflation that obeys an overdamped Langevin equation. We briefly…
Enhancing cosmic shear with the multi-scale lensing PDF
Benjamin Giblin, Yan-Chuan Cai, Joachim Harnois-Déraps
We quantify the cosmological constraining power of the `lensing PDF' - the one-point probability density of weak lensing convergence maps - by modelling this statistic numerically…
Coherent and incoherent structures in fuzzy dark matter halos
I-Kang Liu, Nick P. Proukakis, Gerasimos Rigopoulos
We show that fuzzy dark matter halos exhibit spatial differentiation in the degree of coherence of the field configuration, ranging from completely coherent in the central solitoni…
It takes two to know one: Computing accurate one-point PDF covariances from effective two-point PDF models
Cora Uhlemann, Oliver Friedrich, Aoife Boyle +4
One-point probability distribution functions (PDFs) of the cosmic matter density are powerful cosmological probes that extract non-Gaussian properties of the matter distribution an…