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Dark Energy Survey Year 3 results: Cosmology from cosmic shear and robustness to modeling uncertainty
(2022)Physical Review DThis work and its companion paper, Amon et al. [Phys. Rev. D 105, 023514 (2022)PRVDAQ2470-001010.1103/PhysRevD.105.023514], present cosmic shear measurements and cosmological constraints from over 100 million source galaxies in the Dark Energy Survey (DES) Year 3 data. We constrain the lensing amplitude parameter S8σ8ωm/0.3 at the 3% level in ΛCDM: S8=0.759-0.023+0.025 (68% CL). Our constraint is at the 2% level when using angular scale ...Journal Article -
Dark Energy Survey Year 3 results: Cosmology with moments of weak lensing mass maps
(2022)Physical Review DWe present a cosmological analysis using the second and third moments of the weak lensing mass (convergence) maps from the first three years of data (Y3) data of the Dark Energy Survey. The survey spans an effective area of 4139 square degrees and uses the images of over 100 million galaxies to reconstruct the convergence field. The second moment of the convergence as a function of smoothing scale contains information similar to standard ...Journal Article -
Dark Energy Survey Year 3 results: Curved-sky weak lensing mass map reconstruction
(2021)Monthly Notices of the Royal Astronomical SocietyWe present reconstructed convergence maps, mass maps, from the Dark Energy Survey (DES) third year (Y3) weak gravitational lensing data set. The mass maps are weighted projections of the density field (primarily dark matter) in the foreground of the observed galaxies. We use four reconstruction methods, each is a maximum a posteriori estimate with a different model for the prior probability of the map: Kaiser-Squires, null B-mode prior, ...Journal Article -
The Dark Energy Survey: Data Release 1
(2018)The Astrophysical Journal. Supplement SeriesJournal Article -
Cosmic shear measurements with Dark Energy Survey Science Verification data
(2016)Physical Review DJournal Article -
Galaxy bias from the Dark Energy Survey Science Verification data: Combining galaxy density maps and weak lensing maps
(2016)Monthly Notices of the Royal Astronomical SocietyJournal Article -
The third gravitational lensing accuracy testing (GREAT3) challenge handbook
(2014)The Astrophysical Journal. Supplement SeriesJournal Article -
Cosmology constraints from shear peak statistics in Dark Energy Survey Science Verification data
(2016)Monthly Notices of the Royal Astronomical SocietyJournal Article -
Dark Energy Survey Year 1 results: Cosmological constraints from cosmic shear
(2018)Physical Review DWe use 26×106 galaxies from the Dark Energy Survey (DES) Year 1 shape catalogs over 1321 deg2 of the sky to produce the most significant measurement of cosmic shear in a galaxy survey to date. We constrain cosmological parameters in both the flat ΛCDM and the wCDM models, while also varying the neutrino mass density. These results are shown to be robust using two independent shape catalogs, two independent photo-z calibration methods, and ...Journal Article -
The PAU survey: measurement of narrow-band galaxy properties with approximate bayesian computation
(2021)Journal of Cosmology and Astroparticle PhysicsNarrow-band imaging surveys allow the study of the spectral characteristics of galaxies without the need of performing their spectroscopic follow-up. In this work, we forward-model the Physics of the Accelerating Universe Survey (PAUS) narrow-band data. The aim is to improve the constraints on the spectral coefficients used to create the galaxy spectral energy distributions (SED) of the galaxy population model in Tortorelli et al. 2020. ...Journal Article