1. The DES view of the Eridanus supervoid and the CMB cold spot
- Author
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Kovács, A, Jeffrey, N, Gatti, M, Chang, C, Whiteway, L, Hamaus, N, Lahav, O, Pollina, G, Bacon, D, Kacprzak, T, Mawdsley, B, Nadathur, S, Zeurcher, D, García-Bellido, J, Alarcon, A, Amon, A, Bechtol, K, Bernstein, G M, Campos, A, Rosell, A Carnero, Kind, M Carrasco, Cawthon, R, Chen, R, Choi, A, Cordero, J, Davis, C, Derose, J, Doux, C, Drlica-Wagner, A, Eckert, K, Elsner, F, Elvin-Poole, J, Everett, S, Ferté, A, Giannini, G, Gruen, D, Gruendl, R A, Harrison, I, Hartley, W G, Herner, K, Huff, E M, Huterer, D, Kuropatkin, N, Jarvis, M, Leget, P F, Maccrann, N, Mccullough, J, Muir, J, Myles, J, Navarro-Alsina, A, Pandey, S, Prat, J, Raveri, M, Rollins, R P, Ross, A J, Rykoff, E S, Sánchez, C, Secco, L F, Sevilla-Noarbe, I, Sheldon, E, Shin, T, Troxel, M A, Tutusaus, I, Varga, T N, Yanny, B, Yin, B, Zhang, Y, Zuntz, J, Aguena, M, Allam, S, Andrade-Oliveira, F, Annis, J, Bertin, E, Brooks, D, Burke, D, Carretero, J, Costanzi, M, da , Costa, L N, Pereira, M E S, Davis, T, Deundefined, Vicente, J, Desai, S, Diehl, H T, Ferrero, I, Flaugher, B, Fosalba, P, Frieman, J, Gaztañaga, E, Gerdes, D, Giannantonio, T, Gschwend, J, Gutierrez, G, Hinton, S, Hollowood, D L, Honscheid, K, James, D, Kuehn, K, Lima, M, Maia, M A G, Marshall, J L, Melchior, P, Menanteau, F, Miquel, R, Morgan, R, Ogando, R, Paz-Chinchon, F, Pieres, A, Plazas, A A, Monroy, M Rodriguez, Romer, K, Roodman, A, Sanchez, E, Schubnell, M, Serrano, S, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, M E C, Tarle, G, Thomas, D, C-H, To, Weller, J, UAM. Departamento de Física Teórica, Instituto de Astrofísica de Canarias (IAC), Tenerife, Univer Sité de Paris, University College London, The Barcelona Institute of Science and Technology, University of Pennsylvania, University of Chicago, Univer Sity of Chica Go, Ludwig-Maximilians Univer- Sität München, University of Portsmouth, ETH Zurich, Universidad Autonoma de Madrid, Argonne National Laboratory, Stanford University, University of Wisconsin- Madison, Carnegie Mellon University, Laboratório Interinstitucional de E-Astronomia - LIneA, National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Duke University, The Ohio State Univer- Sity, University of Manchester, University of California, Santa Cruz Institute for Particle Physics, Fermi National Accelerator Laboratory, The Ohio State University, California Institute of Technology, SLAC National Accelerator Laboratory, University of Oxford, University of Gene Va, University of Michigan, University of Cambridge, Perimeter Institute for Theoretical Physics, Univer Sidade Estadual de Campinas, Medioambientales y Tecnológicas (CIEMAT), Brookhaven National Laboratory, Institut D'Estudis Espacials de Catalunya (IEEC), CSIC), Max Planck Institute for Extraterrestrial Physics, University of Edinb Urgh, Universidade de São Paulo (USP), Universidade Estadual Paulista (UNESP), Institut D'Astrophysique de Paris, University of Trieste, INAF-Osservatorio Astronomico di Trieste, Institute for Fundamental Physics of the Universe, Observatório Nacional, University of Queensland, IIT Hyderabad, University of Oslo, Univer Sity of Cambridge, Harvard and Smithsonian, Lowell Observatory, Macquarie University, Texas A&M Univer Sity, Princeton University, Institució Catalana de Recerca i Estudis Avan C Ats, Univer Sity of Sussex, University of Southampton, Oak Ridge National Labo- Ratory, Kovács, A, Jeffrey, N, Gatti, M, Chang, C, Whiteway, L, Hamaus, N, Lahav, O, Pollina, G, Bacon, D, Kacprzak, T, Mawdsley, B, Nadathur, S, Zeurcher, D, García-Bellido, J, Alarcon, A, Amon, A, Bechtol, K, Bernstein, G M, Campos, A, Rosell, A Carnero, Kind, M Carrasco, Cawthon, R, Chen, R, Choi, A, Cordero, J, Davis, C, Derose, J, Doux, C, Drlica-Wagner, A, Eckert, K, Elsner, F, Elvin-Poole, J, Everett, S, Ferté, A, Giannini, G, Gruen, D, Gruendl, R A, Harrison, I, Hartley, W G, Herner, K, Huff, E M, Huterer, D, Kuropatkin, N, Jarvis, M, Leget, P F, Maccrann, N, Mccullough, J, Muir, J, Myles, J, Navarro-Alsina, A, Pandey, S, Prat, J, Raveri, M, Rollins, R P, Ross, A J, Rykoff, E S, Sánchez, C, Secco, L F, Sevilla-Noarbe, I, Sheldon, E, Shin, T, Troxel, M A, Tutusaus, I, Varga, T N, Yanny, B, Yin, B, Zhang, Y, Zuntz, J, Aguena, M, Allam, S, Andrade-Oliveira, F, Annis, J, Bertin, E, Brooks, D, Burke, D, Carretero, J, Costanzi, M, da , Costa, L N, Pereira, M E S, Davis, T, De , Vicente, J, Desai, S, Diehl, H T, Ferrero, I, Flaugher, B, Fosalba, P, Frieman, J, Gaztañaga, E, Gerdes, D, Giannantonio, T, Gschwend, J, Gutierrez, G, Hinton, S, Hollowood, D L, Honscheid, K, James, D, Kuehn, K, Lima, M, Maia, M A G, Marshall, J L, Melchior, P, Menanteau, F, Miquel, R, Morgan, R, Ogando, R, Paz-Chinchon, F, Pieres, A, Plazas, A A, Monroy, M Rodriguez, Romer, K, Roodman, A, Sanchez, E, Schubnell, M, Serrano, S, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, M E C, Tarle, G, Thomas, D, C-H, To, Weller, J, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), European Research Council, National Science Foundation (US), European Commission, and Agenzia Spaziale Italiana
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Cosmic Background Radiation ,FOS: Physical sciences ,Física ,Astronomy and Astrophysics ,cosmic background radiation ,Surveys ,gravitational lensing: weak ,surveys ,Space and Planetary Science ,Weak [Gravitational Lensing] ,survey ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
A. Kovács et al., 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., AK has been supported by a Juan de la Cierva Incorporación fellowship with project number IJC2018-037730-I, and funding for this project was also available in part through SEV-2015-0548 and AYA2017-89891-P. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&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 and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under grants ESP2017-89838, PGC2018-094773, PGC2018-102021, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ciência e Tecnologia (INCT) do e-Universo (CNPq grant 465376/2014-2).
- Published
- 2021
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