Astrophysical: Gravitational lensing

  • Publication
    Dark Energy Survey Y3 results: blending shear and redshift biases in image simulations
    As the statistical power of galaxy weak lensing reaches per cent level precision, large, realistic, and robust simulations are required to calibrate...
  • Publication
    Dark Energy Survey year 1 results: the relationship between mass and light around cosmic voids
    What are the mass and galaxy profiles of cosmic voids? In this paper, we use two methods to extract voids in the Dark Energy Survey (DES) Year 1 redMaGiC galaxy...
  • Publication
    Dark energy survey year 3 results: cosmological constraints from the analysis of cosmic shear in harmonic space
    We present cosmological constraints from the analysis of angular power spectra of cosmic shear maps based on data from the first three years of observations by...
  • Publication
    Dark Energy Survey Year 3 results: Curved-sky weak lensing mass map reconstruction
    We present reconstructed convergence maps, mass maps, from the Dark Energy Survey (DES) third year (Y3) weak gravitational lensing data set. The mass maps are...
  • Publication
    Dark Energy Survey Year 3 results: galaxy-halo connection from galaxy-galaxy lensing
    Galaxy-galaxy lensing is a powerful probe of the connection between galaxies and their host dark matter haloes, which is important both for galaxy evolution and...
  • Publication
    Dark Energy Survey Year 3 results: Imprints of cosmic voids and superclusters in the Planck CMB lensing map
    The CMB lensing signal from cosmic voids and superclusters probes the growth of structure in the low-redshift cosmic web. In this analysis, we cross-correlated...
  • Publication
    Dark Energy Survey Year 3 results: magnification modelling and impact on cosmological constraints from galaxy clustering and galaxy-galaxy lensing
    We study the effect of magnification in the Dark Energy Survey Year 3 analysis of galaxy clustering and galaxy-galaxy lensing, using two different lens samples...
  • Publication
    Dark Energy Survey Year 3 results: marginalization over redshift distribution uncertainties using ranking of discrete realizations
    Cosmological information from weak lensing surveys is maximized by sorting source galaxies into tomographic redshift subsamples. Any uncertainties on these...
  • Publication
    Dark Energy Survey year 3 results: point spread function modelling
    We introduce a new software package for modelling the point spread function (PSF) of astronomical images, called PIFF (PSFs In the Full FOV), which we apply to...