Year: 2020
Type: article
Abstract: ABSTRACT 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 the first three years (known as Y3) of the Dark Energy Survey (DES) data. We describe the relevant details about the algorithms used by piff to model the PSF, including how the PSF model varies across the field of view (FOV). Diagnostic results show that the systematic errors from the PSF modelling are very small over the range of scales that are important for the DES Y3 weak lensing analysis. In particular, the systematic errors from the PSF modelling are significantly smaller than the corresponding results from the DES year one (Y1) analysis. We also briefly describe some planned improvements to piff that we expect to further reduce the modelling errors in future analyses.
Authors: M Jarvis, G M Bernstein, A Amon, C Davis, P F Léget, K Bechtol, I Harrison, M Gatti, A Roodman, C Chang, R Chen, A Choi, S Desai, A Drlica-Wagner, D Gruen, R A Gruendl, A Hernandez, N MacCrann, J Meyers, A Navarro-Alsina, S Pandey, A A Plazas, L F Secco, E Sheldon, M A Troxel, S Vorperian, K Wei, J Zuntz, T M C Abbott, M Aguena, S Allam, S Avila, S Bhargava, S L Bridle, D Brooks, A Carnero Rosell, M Carrasco Kind, J Carretero, M Costanzi, L N da Costa, J De Vicente, H T Diehl, P Doel, S Everett, B Flaugher, P Fosalba, J Frieman, J García-Bellido, E Gaztanaga, D W Gerdes, G Gutierrez, S R Hinton, D L Hollowood, K Honscheid, D J James, S Kent, K Kuehn, N Kuropatkin, O Lahav, M A G Maia, M March, J L Marshall, P Melchior, F Menanteau, R Miquel, R L C Ogando, F Paz-Chinchón, E S Rykoff, E Sanchez, V Scarpine, M Schubnell, S Serrano, I Sevilla-Noarbe, M Smith, E Suchyta, M E C Swanson, G Tarle, T N Varga, A R Walker, W Wester, R D Wilkinson
Institutions: University of Pennsylvania, Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Centre National de la Recherche Scientifique, Sorbonne Université, Laboratoire de Physique Nucléaire et de Hautes Énergies, Institut National de Physique Nucléaire et de Physique des Particules, University of Wisconsin–Madison, University of Manchester, Institute for High Energy Physics, Barcelona Institute of Science and Technology, SLAC National Accelerator Laboratory, University of Chicago, Duke University, The Ohio State University, Indian Institute of Technology Hyderabad, Fermi National Accelerator Laboratory, University of Illinois Urbana-Champaign, National Center for Supercomputing Applications, Lawrence Livermore National Laboratory, Universidade Estadual de Campinas (UNICAMP), Laboratório Interinstitucional de e-Astronomia, Princeton University, Brookhaven National Laboratory, University of Edinburgh, Cerro Tololo Inter-American Observatory, NSF NOIRLab, Universidade de São Paulo, Instituto de Física Teórica, Universidad Autónoma de Madrid, University of Sussex, University College London, Universidad de La Laguna, Instituto de Astrofísica de Canarias, Trieste Astronomical Observatory, Institute for Fundamental Physics of the Universe, National Observatory, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, University of California, Santa Cruz, Institute of Space Sciences, Institut d'Estudis Espacials de Catalunya, University of Michigan, The University of Queensland, Center for Astrophysics Harvard & Smithsonian, Lowell Observatory, Australian Astronomical Optics, Texas A&M University, Institució Catalana de Recerca i Estudis Avançats, University of Cambridge, University of Southampton, Oak Ridge National Laboratory, Max Planck Institute for Extraterrestrial Physics, Ludwig-Maximilians-Universität München
Language: English
Subfield: Instrumentation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, U.S. Department of Energy, University of Pennsylvania, Ohio State University, University of Chicago, University of Portsmouth, University College London, University of Sussex, Deutsche Forschungsgemeinschaft, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Financiadora de Estudos e Projetos, Institut de Física d'Altes Energies, University of Illinois at Urbana-Champaign, Office of Science, Science and Technology Facilities Council, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Integrated Electronics Engineering Center, Binghamton University, Argonne National Laboratory, Fermilab, Lawrence Berkeley National Laboratory, SLAC National Accelerator Laboratory
Awards: G1265542407, G1313983767, G154696372, G1907584174, G2401681081, G3156532051, G3496172001, G3523651922, G4027194468, G498139845, RESEARCH IN HIGH ENERGY PHYSICS AT THE UNIVERSITY OF PENNSYLVANIA, G5616713406, G585908603, G600983903, G6216976133, RESEARCH IN HIGH ENERGY PHYSICS AT THE UNIVERSITY OF PENNSYLVANIA, G716412294, G7335011630, G8471153389, G86560745, G969889393
OpenAlex ID: W3104615517