Dark energy survey year 3 results: cosmological constraints from the analysis of cosmic shear in harmonic space

Creators: Doux, C.; Jain, B.; Zeurcher, D.; Lee, J.; Fang, X.; Rosenfeld, R.; Amon, A.; Camacho, H.; Choi, A.; Secco, L. F.; Blazek, J.; Chang, C.; Gatti, M.; Gaztanaga, E.; Jeffrey, N.; Raveri, M.; Samuroff, S.; Alarcon, A.; Alves, O.; Andrade-Oliveira, F.; Baxter, E.; Bechtol, K.; Becker, M. R.; Bernstein, G. M.; Campos, A.; Carnero Rosell, A.; Carrasco Kind, M.; Cawthon, R.; Chen, R.; Cordero, J.; Crocce, M.; Davis, C.; DeRose, J.; Dodelson, S.; Drlica-Wagner, A.; Eckert, K.; Eifler, T. F.; Elsner, F.; Elvin-Poole, J.; Everett, S.; Ferté, A.; Fosalba, P.; Friedrich, O.; Giannini, G.; Gruen, D.; Gruendl, R. A.; Harrison, I.; Hartley, W. G.; Herner, K.; Huang, H.; Huff, E. M.; Huterer, D.; Jarvis, M.; Krause, E.; Kuropatkin, N.; Leget, P-F; Lemos, P.; Liddle, A. R.; MacCrann, N.; McCullough, J.; Muir, J.; Myles, J.; Navarro-Alsina, A.; Pandey, S.; Park, Y.; Porredon, A.; Prat, J.; Rodriguez-Monroy, M.; Rollins, R. P.; Roodman, A.; Ross, A. J.; Rykoff, E. S.; Sánchez, C.; Sanchez, J.; Sevilla-Noarbe, I.; Sheldon, E.; Shin, T.; Troja, A.; Troxel, M. A.; Tutusaus, I.; Varga, T. N.; Weaverdyck, N.; Wechsler, R. H.; Yanny, B.; Yin, B.; Zhang, Y.; Zuntz, J.; Abbott, T. M. C.; Aguena, M.; Allam, S.; Annis, J.; Bacon, D.; Bertin, E.; Bocquet, S.; Brooks, D.; Burke, D. L.; Carretero, J.; Costanzi, M.; da Costa, L. N.; Pereira, M. E. S.; De Vicente, J.; Desai, S.; Diehl, H. T.; Doel, P.; Ferrero, I.; Flaugher, B.; Frieman, J.; García-Bellido, J.; Gerdes, D. W.; Giannantonio, T.; Gschwend, J.; Gutierrez, G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; James, D. J.; Kim, A. G.; Kuehn, K.; Lahav, O.; Marshall, J. L.; Menanteau, F.; Miquel, R.; Morgan, R.; Ogando, R. L. C.; Palmese, A.; Paz-Chinchón, F.; Pieres, A.; Plazas Malagón, A. A.; Reil, K.; Sanchez, E.; Scarpine, V.; Serrano, S.; Smith, M.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thomas, D.; To, C.; Weller, J.; DES Collaboration

Abstract

We present cosmological constraints from the analysis of angular power spectra of cosmic shear maps based on data from the first three years of observations by the Dark Energy Survey (DES Y3). Our measurements are based on the pseudo-C_ℓ method and complement the analysis of the two-point correlation functions in real space, as the two estimators are known to compress and select Gaussian information in different ways, due to scale cuts. They may also be differently affected by systematic effects and theoretical uncertainties, making this analysis an important cross-check. Using the same fiducial Lambda cold dark matter model as in the DES Y3 real-space analysis, we find S₈ ≡ σ₈ √(Ωₘ/0.3) = 0.793^(+0.038)_(−0.025), which further improves to S₈ = 0.784 ± 0.026 when including shear ratios. This result is within expected statistical fluctuations from the real-space constraint, and in agreement with DES Y3 analyses of non-Gaussian statistics, but favours a slightly higher value of S₈, which reduces the tension with the Planck 2018 constraints from 2.3σ in the real space analysis to 1.5σ here. We explore less conservative intrinsic alignments models than the one adopted in our fiducial analysis, finding no clear preference for a more complex model. We also include small scales, using an increased Fourier mode cut-off up to kₘₐₓ = 5 h Mpc⁻¹, which allows to constrain baryonic feedback while leaving cosmological constraints essentially unchanged. Finally, we present an approximate reconstruction of the linear matter power spectrum at present time, found to be about 20 per cent lower than predicted by Planck 2018, as reflected by the lower S₈ value.

Additional Information

© 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model) Received: 29 March 2022. Revision received: 14 June 2022. Accepted: 21 June 2022. Published: 01 July 2022. Corrected and typeset: 27 July 2022. The authors would like to thank Masahiro Takada for useful discussions that motivated this work, and David Alonso and Andrina Nicola for discussions about the pseudo-C_ℓ method. This research has made use of NASA's Astrophysics Data System, ADSTEX (https://github.com/yymao/adstex), NUMPY (Harris et al. 2020), SCIPY (Virtanen et al. 2020), MATPLOTLIB (Hunter 2007), NUMBA (Lam et al. 2021), ASTROPY (Astropy Collaboration 2013, 2018), HEALPY (Zonca et al. 2019), NAMASTER(Alonso et al. 2019), COSMOSIS software (Zuntz et al. 2015), COSMOLIKE (Eifler et al. 2014; Krause & Eifler 2017), GETDIST (Lewis 2019), and POLYCHORD (Handley et al. 2015). 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 Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenössische Technische Hochschule (ETH) Zürich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ciències de l'Espai (IEEC/CSIC), the Institut de Física d'Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universität München and the associated Excellence Cluster Universe, the University of Michigan, NSF's NOIRLab, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium. Based in part on observations at Cerro Tololo Inter-American Observatory at NSF's NOIRLab (NOIRLab Prop. ID 2012B-0001; PI: J. Frieman), which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. 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). This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. DATA AVAILABILITY. A general description of DES data releases is available on the survey website at https://www.darkenergysurvey.org/the-des-project/data-access/. DES Y3 cosmological data has been partially released on the DES Data Management website hosted by the National Center for Supercomputing Applications at https://des.ncsa.illinois.edu/releases/y3a2. This includes Gold products, PSF modelling, Balrog catalogues, Deep Fields data and the Y3 galaxy catalogs, including the redshift distributions used in this analysis. The COSMOSIS software (Zuntz et al. 2015) is available at https://bitbucket.org/joezuntz/cosmosis/wiki/Home. The measurement code, used in this analysis to interface DES catalogues and NAMASTER, can be obtained upon request to the corresponding author.

Attached Files

Published - stac1826.pdf

Submitted - 2203.07128.pdf

Files

stac1826.pdf

Files (11.2 MB)

Name	Size	Download all
stac1826.pdf md5:c1c97fc9b7cbc2f937b2f77c7302913b	7.0 MB	Preview Download
2203.07128.pdf md5:5ec6c5726eafbec98fe6045655901b50	4.2 MB	Preview Download

Additional details

	All versions	This version
Views	0	0
Downloads	0	0
Data volume	0 Bytes	0 Bytes