550 citations · 813 across the 16 of their papers we have counts for
16 papers · 1 filter
Lensing without mixing: Probing baryonic acoustic oscillations and other scale-dependent features in cosmic shear surveys
David Touzeau, Alexandre Barthelemy, Francis Bernardeau
Weak-gravitational lensing tends to wash out scale- and time-dependent features of the clustering of matter, such as the baryonic acoustic oscillations which appear in the form of…
Euclid preparation. LXXXV. Toward a DR1 application of higher-order weak lensing statistics
Euclid Collaboration, S. Vinciguerra, F. Bouchè +284
This is the second paper in the HOWLS (higher-order weak lensing statistics) series exploring the usage of non-Gaussian statistics for cosmology inference within Euclid. With respe…
Clustering of the extreme: A theoretical description of weak lensing critical points power spectra in the mildly nonlinear regime
Zhengyangguang Gong, Alexandre Barthelemy, Sandrine Codis
In cosmic web analysis, complementary to traditional cosmological probes, the extrema (e.g. peaks and voids) two-point correlation functions (2PCFs) are of particular interest for…
Theoretical wavelet -norm from one-point PDF prediction
Vilasini Tinnaneri Sreekanth, Sandrine Codis, Alexandre Barthelemy +1
Weak gravitational lensing, resulting from the bending of light due to the presence of matter along the line of sight, is a potent tool for exploring large-scale structures, partic…
Euclid. I. Overview of the Euclid mission
Euclid Collaboration, Y. Mellier, Abdurro'uf +1134
The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Eucl…
Unleashing cosmic shear information with the tomographic weak lensing PDF
Lina Castiblanco, Cora Uhlemann, Joachim Harnois-Déraps +1
In this work, we demonstrate the constraining power of the tomographic weak lensing convergence PDF for StageIV-like source galaxy redshift bins and shape noise. We focus on scales…
A theoretical view of the T-web statistical description of the cosmic web
Emma Ayçoberry, Alexandre Barthelemy, Sandrine Codis
The classification of the cosmic web into different environments is both a tool to study in more detail the formation of halos and galaxies via the link between their properties an…
Making the leap I: Modelling the reconstructed lensing convergence PDF from cosmic shear with survey masks and systematics
Alexandre Barthelemy, Anik Halder, Zhengyangguang Gong +1
The last few years have seen the development of a promising theoretical framework for statistics of the cosmic large-scale structure -- the theory of large deviations (LDT) for mod…
Euclid Preparation. XXVIII. Forecasts for ten different higher-order weak lensing statistics
Euclid Collaboration, V. Ajani, M. Baldi +211
Recent cosmic shear studies have shown that higher-order statistics (HOS) developed by independent teams now outperform standard two-point estimators in terms of statistical precis…
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…
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…
Numerical complexity of the joint nulled weak-lensing probability distribution function
Alexandre Barthelemy, Francis Bernardeau, Sandrine Codis +1
In the context of tomographic cosmic shear surveys, there exists a nulling transformation of weak lensing observations (also called BNT transform) that allows us to simplify the co…
Nuw CDM cosmology from the weak lensing convergence PDF
Aoife Boyle, Cora Uhlemann, Oliver Friedrich +5
Pinning down the total neutrino mass and the dark energy equation of state is a key aim for upcoming galaxy surveys. Weak lensing is a unique probe of the total matter distribution…
Probability distribution function of the aperture mass field with large deviation theory
Alexandre Barthelemy, Sandrine Codis, Francis Bernardeau
In the context of tomographic cosmic shear surveys, a theoretical model for the one-point statistics of the aperture mass (Map) is developed. This formalism is based on the applica…
Post-Born corrections to the one-point statistics of (CMB) lensing convergence obtained via large deviation theory
Alexandre Barthelemy, Sandrine Codis, Francis Bernardeau
Weak lensing of galaxies and CMB photons through the large-scale structure of the Universe is one of the most promising cosmological probes with upcoming experiments dedicated to i…
Game of cones: A nulling strategy for modelling lensing convergence in cones with large deviation theory
Alexandre Barthelemy, Sandrine Codis, Cora Uhlemann +2
The distribution of the cosmic convergence field is modeled using a large-deviation principle where all non-Gaussian contributions are computed from first principles. The geometry…