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Made available in DSpace on 2022-04-29T08:41:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-01
The Cold Spot is a puzzling large-scale feature in the Cosmic Microwave Background temperature maps and its origin has been subject to active debate. As an important foreground structure at low redshift, the Eridanus supervoid was recently detected, but it was subsequently determined that, assuming the standard ΛCDM model, only about 10-20 per cent of the observed temperature depression can be accounted for via its Integrated Sachs-Wolfe imprint. However, R pdbl 100 h-1Mpc supervoids elsewhere in the sky have shown ISW imprints AISW ≈ 5.2 ± 1.6 times stronger than expected from ΛCDM (AISW = 1), which warrants further inspection. Using the Year-3 redMaGiC catalogue of luminous red galaxies from the Dark Energy Survey, here we confirm the detection of the Eridanus supervoid as a significant underdensity in the Cold Spot's direction at z < 0.2. We also show, with S/N pdbl 5 significance, that the Eridanus supervoid appears as the most prominent large-scale underdensity in the dark matter mass maps that we reconstructed from DES Year-3 gravitational lensing data. While we report no significant anomalies, an interesting aspect is that the amplitude of the lensing signal from the Eridanus supervoid at the Cold Spot centre is about 30 per cent lower than expected from similar peaks found in N-body simulations based on the standard ΛCDM model with parameters m = 0.279 and σ8 = 0.82. Overall, our results confirm the causal relation between these individually rare structures in the cosmic web and in the CMB, motivating more detailed future surveys in the Cold Spot region.
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea La La guna, Tenerife
Departamento de Astrofísica Universidad de la Laguna (ULL) La La guna Tenerife
Laboratoire de Physique de L'Ecole Normale Supérieure ENS Université PSL CNRS Sorbonne Univer Sité Univer Sité de Paris, 24 Rue Lhomond
Department of Physics and Astronomy University College London, Gower Street
Institut de Física D'Altes Energies (IFAE) The Barcelona Institute of Science and Technology Campus UAB
Department of Physics and Astronomy University of Pennsylvania, Philadel- phia
Department of Astronomy and Astrophysics University of Chicago
Kavli Institute for Cosmolo Gical Physics Univer Sity of Chica Go, Chica go
Universitäts-Sternwarte Fakultät Für Physik Ludwig-Maximilians Univer- Sität München, Scheinerstr. 1
Institute of Cosmology and Gravitation University of Portsmouth
Department of Physics ETH Zurich, Wolfgang-Pauli-Strasse 16
Instituto de Fisica Teorica UAM/CSIC Universidad Autonoma de Madrid
Argonne National Laboratory, 9700 South Cass Avenue
Kavli Institute for Particle Astrophysics and Cosmology Stanford University, PO Box 2450
Physics Department 2320 Chamberlin Hall University of Wisconsin- Madison, 1150 University Avenue
Department of Physics Carnegie Mellon University
Laboratório Interinstitucional de E-Astronomia - LIneA, Rua Gal. José Cristino 77Rio de Janeiro, RJ
Center for Astrophysical Surveys National Center for Supercomputing Applications, 1205 West Clark St.
Department of Astronomy University of Illinois at Urbana-Champaign, 1002 W. Green Street
Department of Physics Duke University
Center for Cosmology and Astro-Particle Physics The Ohio State Univer- Sity
Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester, Oxford Road
Department of Astronomy University of California, 501 Campbell Hall
Santa Cruz Institute for Particle Physics
Fermi National Accelerator Laboratory, PO Box 500
Department of Physics The Ohio State University
Jet Propulsion Laboratory California Institute of Technology, 4800 Oak Grove Dr.
Department of Physics Stanford University, 382 Via Pueblo Mall
SLAC National Accelerator Laboratory
Department of Physics University of Oxford, Denys Wilkinson Building Keble Road, Oxford
Department of Astronomy University of Gene Va, c h. d'écogia 16
Departmentof Physics University of Michigan
Department of Applied Mathematics and Theoretical Physics University of Cambridge
Perimeter Institute for Theoretical Physics, 31Caroline St N
Instituto de Física Gleb Wata Ghin Univer Sidade Estadual de Campinas
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Av. Complutense, 40
Brookhaven National Laboratory, Bldg 510
Institut D'Estudis Espacials de Catalunya (IEEC)
Institute of Space Sciences (ICE CSIC) Campus UAB, Carrer de Can Magrans, s/n
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse
Institute for Astronomy University of Edinb Urgh, Edinb urgh
Departamento de Física Matemática Instituto de Física Universidade de São Paulo, São Paulo, SP
Instituto de Física Teórica Universidade Estadual Paulista, R. Dr. Bento Teobaldo Ferraz, 271 Várzea da Barra Funda São Paulo - SP
CNRS UMR 7095 Institut D'Astrophysique de Paris
Sorbonne Universités UPMC Univ Paris 06 UMR 7095 Institut D'Astrophysique de Paris
Astronomy Unit Department of Physics University of Trieste, via Tiepolo 11
INAF-Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11
Institute for Fundamental Physics of the Universe, Via Beirut 2
Observatório Nacional, Rua Gal. José Cristino 77 Rio de Janeiro, RJ
School of Mathematics and Physics University of Queensland
Department of Physics IIT Hyderabad, Telangana
Institute of Theoretical Astrophysics University of Oslo, PO Box 1029 Blindern
Department of Astronomy University of Michigan
Institute of Astronomy University of Cambridge, Madingley Road
Kavli Institute for Cosmolo Gy Univer Sity of Cambridge, Madingley Road
Center for Astrophysics Harvard and Smithsonian, 60Garden Street Cambridg e
Lowell Observatory, 1400 W Mars Hill Rd
Australian Astronomical Optics Faculty of Science and Engineering Macquarie University, Macquarie Park
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy Department of Physics and Astronomy Texas A&M Univer Sity, Colleg e Station
Department of Astrophysical Sciences Princeton University, Princeton, NJ Peyton Hall
Institució Catalana de Recerca i Estudis Avan C Ats
Department of Physics and Astronomy Pevensey Building Univer Sity of Sussex
School of Physics and Astronomy University of Southampton
Computer Science and Mathematics Division Oak Ridge National Labo- Ratory, Oak Ridg e
Instituto de Física Teórica Universidade Estadual Paulista, R. Dr. Bento Teobaldo Ferraz, 271 Várzea da Barra Funda São Paulo - SP
