Work

Dark Energy Survey Year 3 Results: Three-Point Shear Correlations and Mass Aperture Moments

Year: 2022
Type: preprint
Abstract: We present high signal-to-noise measurements of three-point shear correlations and the third moment of the mass aperture statistic using the first 3 years of data from the Dark Energy Survey. We additionally obtain the first measurements of the configuration and scale dependence of the four three-point shear correlations which carry cosmological information. With the third-order mass aperture statistic, we present tomographic measurements over angular scales of 4 to 60 arcminutes with a combined statistical significance of 15.0$\sigma$. Using the tomographic information and measuring also the second-order mass aperture, we additionally obtain a skewness parameter and its redshift evolution. We find that the amplitudes and scale-dependence of these shear 3pt functions are in qualitative agreement with measurements in a mock galaxy catalog based on N-body simulations, indicating promise for including them in future cosmological analyses. We validate our measurements by showing that B-modes, parity-violating contributions and PSF modeling uncertainties are negligible, and determine that the measured signals are likely to be of astrophysical and gravitational origin.
Institutions: University of Chicago, University of Pennsylvania, Fermi National Accelerator Laboratory, Argonne National Laboratory, University of Cambridge, University of Wisconsin–Madison, Northeastern University, École Polytechnique Fédérale de Lausanne, Carnegie Mellon University, Universidad de La Laguna, Instituto de Astrofísica de Canarias, Laboratório Interinstitucional de e-Astronomia, University of Illinois Urbana-Champaign, National Center for Supercomputing Applications, California Institute of Technology, University of Manchester, Lawrence Berkeley National Laboratory, University of California, Santa Cruz, Institute for High Energy Physics, Barcelona Institute of Science and Technology, Ludwig-Maximilians-Universität München, University of Oxford, Cardiff University, University of Geneva, University of Arizona, Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, SLAC National Accelerator Laboratory, Universidade Estadual de Campinas (UNICAMP), Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Brookhaven National Laboratory, Duke University, ETH Zurich, University of Michigan, University of Portsmouth, Centre National de la Recherche Scientifique, Institut d'Astrophysique de Paris, Université Pierre-et-Marie-Curie, University College London, Institute of Space Sciences, Institut d'Estudis Espacials de Catalunya, National Observatory, Universität Hamburg, University of Oslo, Consejo Superior de Investigaciones Científicas, Instituto de Física Teórica, Universidad Autónoma de Madrid, The University of Queensland, The Ohio State University, Lowell Observatory, Australian Astronomical Optics, Texas A&M University, Institució Catalana de Recerca i Estudis Avançats, Max Planck Institute for Extraterrestrial Physics, Perimeter Institute, Princeton University, Oak Ridge National Laboratory
Language: English
Open Access status: green
OpenAlex ID: W4281675325
Cites: 71
Cited by: 32
Related to: 10