The DES view of the Eridanus supervoid and the CMB cold spot

Author:

Kovács A12ORCID,Jeffrey N34ORCID,Gatti M56,Chang C78,Whiteway L4,Hamaus N9,Lahav O4,Pollina G9,Bacon D10,Kacprzak T11,Mawdsley B10,Nadathur S4,Zeurcher D11,García-Bellido J12,Alarcon A13,Amon A14,Bechtol K15,Bernstein G M6,Campos A16,Rosell A Carnero1217,Kind M Carrasco1819,Cawthon R15,Chen R20,Choi A21,Cordero J22,Davis C14,DeRose J2324,Doux C6,Drlica-Wagner A7825,Eckert K6,Elsner F4,Elvin-Poole J2126,Everett S24,Ferté A27,Giannini G5,Gruen D92829,Gruendl R A1819,Harrison I2230,Hartley W G31,Herner K25,Huff E M27,Huterer D32,Kuropatkin N25,Jarvis M6,Leget P F14,MacCrann N33,McCullough J14,Muir J34,Myles J142829,Navarro-Alsina A35,Pandey S6,Prat J7,Raveri M8,Rollins R P22,Ross A J21,Rykoff E S1429,Sánchez C6,Secco L F6,Sevilla-Noarbe I36,Sheldon E37,Shin T6,Troxel M A20,Tutusaus I3839,Varga T N940,Yanny B25,Yin B16,Zhang Y25,Zuntz J41,Aguena M1742,Allam S25,Andrade-Oliveira F1743,Annis J25,Bertin E4445,Brooks D4,Burke D1429,Carretero J5,Costanzi M464748,da Costa L N1749,Pereira M E S32,Davis T50,De Vicente J36,Desai S51,Diehl H T25,Ferrero I52,Flaugher B25,Fosalba P3839,Frieman J825,Gaztañaga E3839,Gerdes D3253,Giannantonio T5455,Gschwend J1749,Gutierrez G25,Hinton S50,Hollowood D L24,Honscheid K21,James D56,Kuehn K5758,Lima M1742,Maia M A G1749,Marshall J L59,Melchior P60,Menanteau F1819,Miquel R561,Morgan R15,Ogando R1749,Paz-Chinchon F1854,Pieres A1749,Plazas A A60,Monroy M Rodriguez36,Romer K62,Roodman A1429,Sanchez E36,Schubnell M32,Serrano S3839,Smith M63,Soares-Santos M32,Suchyta E64,Swanson M E C18,Tarle G32,Thomas D10,To C-H142829,Weller J940

Affiliation:

1. Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea, E-38200 La Laguna, Tenerife, Spain

2. Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, Spain

3. Laboratoire de Physique de l’Ecole Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, 24 Rue Lhomond, F-75005 Paris, France

4. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK

5. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra, Spain

6. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA

7. Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA

8. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA

9. Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany

10. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK

11. Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland

12. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain

13. Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA

14. Kavli Institute for Particle Astrophysics and Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USA

15. Physics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, WI 53706-1390, USA

16. Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15312, USA

17. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil

18. Center for Astrophysical Surveys, National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA

19. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA

20. Department of Physics, Duke University Durham, NC 27708, USA

21. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA

22. Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK

23. Department of Astronomy, University of California, Berkeley, 501 Campbell Hall, Berkeley, CA 94720, USA

24. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA

25. Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA

26. Department of Physics, The Ohio State University, Columbus, OH 43210, USA

27. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA

28. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA

29. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA

30. Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK

31. Department of Astronomy, University of Geneva, ch. d’Écogia 16, CH-1290 Versoix, Switzerland

32. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA

33. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, UK

34. Perimeter Institute for Theoretical Physics, 31 Caroline St N, Waterloo, ON N2L 2Y5, Canada

35. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, SP 13083-859, Brazil

36. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Av. Complutense, 40, E-28040 Madrid, Spain

37. Brookhaven National Laboratory, Bldg 510, Upton, NY 11973, USA

38. Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain

39. Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain

40. Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, Germany

41. Institute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, UK

42. Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, Brazil

43. Instituto de Física Teórica, Universidade Estadual Paulista, R. Dr. Bento Teobaldo Ferraz, 271 - Várzea da Barra Funda, São Paulo - SP, 01140-070, Brazil

44. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France

45. Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France

46. Astronomy Unit, Department of Physics, University of Trieste, via Tiepolo 11, I-34131 Trieste, Italy

47. INAF-Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, I-34143 Trieste, Italy

48. Institute for Fundamental Physics of the Universe, Via Beirut 2, I-34014 Trieste, Italy

49. Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil

50. School of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, Australia

51. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India

52. Institute of Theoretical Astrophysics, University of Oslo. PO Box 1029 Blindern, NO-0315 Oslo, Norway

53. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA

54. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK

55. Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK

56. Center for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA

57. Lowell Observatory, 1400 W Mars Hill Rd, Flagstaff, AZ 86001, USA

58. Australian Astronomical Optics, Faculty of Science and Engineering, Macquarie University, Macquarie Park, NSW 2113, Australia

59. George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA

60. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA

61. Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain

62. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK

63. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK

64. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

Abstract

ABSTRACT 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 ≳ 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 ≳ 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 Ωm = 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.

Funder

U.S. Department of Energy

National Science Foundation

Science and Technology Facilities Council

Higher Education Funding Council for England

National Center for Supercomputing Applications

University of Illinois at Urbana-Champaign

University of Chicago

Ohio State University Press

Texas A and M University

Financiadora de Estudos e Projetos

Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Ministério da Ciência, Tecnologia e Inovação

Deutsche Forschungsgemeinschaft

Argonne National Laboratory

University of Cambridge

Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas

University College London

University of Edinburgh

Eidgenössische Technische Hochschule Zürich

Institut de Ciències de l’Espai

CSIC

Institut de Física d’Altes Energies

Lawrence Berkeley National Laboratory

University of Michigan

University of Nottingham

University of Pennsylvania

University of Portsmouth

SLAC National Accelerator Laboratory

Stanford University

University of Sussex

NSF

MICINN

ERDF

European Union

Generalitat de Catalunya

European Research Council

Seventh Framework Programme

ERC

CNPq

Office of Science

High Energy Physics

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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