KiDS andEuclid: Cosmological implications of a pseudo angular power spectrum analysis of KiDS-1000 cosmic shear tomography
Year: 2022
Type: article
Abstract: We present a tomographic weak lensing analysis of the Kilo Degree Survey Data Release 4 (KiDS-1000), using a new pseudo angular power spectrum estimator (pseudo-Cℓ) under development for the ESAEuclidmission. Over 21 million galaxies with shape information are divided into five tomographic redshift bins, ranging from 0.1 to 1.2 in photometric redshift. We measured pseudo-Cℓusing eight bands in the multipole range 76 < ℓ < 1500 for auto- and cross-power spectra between the tomographic bins. A series of tests were carried out to check for systematic contamination from a variety of observational sources including stellar number density, variations in survey depth, and point spread function properties. While some marginal correlations with these systematic tracers were observed, there is no evidence of bias in the cosmological inference.B-mode power spectra are consistent with zero signal, with no significant residual contamination fromE/B-mode leakage. We performed a Bayesian analysis of the pseudo-Cℓestimates by forward modelling the effects of the mask. Assuming a spatially flat ΛCDM cosmology, we constrained the structure growth parameterS8 = σ8(Ωm/0.3)1/2 = 0.754−0.029+0.027. When combining cosmic shear from KiDS-1000 with baryon acoustic oscillation and redshift space distortion data from recent Sloan Digital Sky Survey (SDSS) measurements of luminous red galaxies, as well as the Lyman-αforest and its cross-correlation with quasars, we tightened these constraints toS8 = 0.771−0.032+0.006. These results are in very good agreement with previous KiDS-1000 and SDSS analyses and confirm a ∼3σtension with early-Universe constraints from cosmic microwave background experiments.
Source: Astronomy and Astrophysics
Authors: A. Loureiro, L. Whittaker, A. Spurio Mancini, B. Joachimi, A. Cuceu, M. Asgari, B. Stölzner, T. Tröster, A. H. Wright, M. Bilicki, A. Dvornik, B. Giblin, C. Heymans, H. Hildebrandt, H. Shan, A. Amara, N. Auricchio, C. Bodendorf, D. Bonino, E. Branchini, M. Brescia, V. Capobianco, C. Carbone, J. Carretero, M. Castellano, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, L. Conversi, Y. Copin, L. Corcione, M. Cropper, A. Da Silva, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, S. Farrens, S. Ferriol, P. Fosalba, M. Frailis, E. Franceschi, M. Fumana, B. Garilli, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, F. Hormuth, K. Jahnke, M. Kümmel, S. Kermiche, A. Kiessling, M. Kilbinger, T. Kitching, K. Kuijken, M. Kunz, H. Kurki-Suonio, S. Ligori, P.B. Lilje, I. Lloro, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, M. Meneghetti, G. Meylan, M. Moresco, B. Morin, L. Moscardini, E. Munari, S. M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, V. Pettorino, S. Pires, M. Poncet, L. Popa, F. Raison, J. Rhodes, H. Rix, M. Roncarelli, R. Saglia, P. Schneider, A. Secroun, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, J. L. Starck, P. Tallada-Crespí, A. N. Taylor, I. Tereno, R. Toledo-Moreo, F. Torradeflot, E. A. Valentijn, Y. Wang, N. Welikala, J. Weller, G. Zamorani, J. Zoubian, S. Andreon, M. Baldi, S. Camera, R. Farinelli, G. Polenta, N. Tessore
Institutions: Royal Observatory, University College London, Imperial College London, University of Edinburgh, University of Manchester, University of Hull, Ruhr University Bochum, Center for Theoretical Physics, Polish Academy of Sciences, Shanghai Astronomical Observatory, University of Chinese Academy of Sciences, University of Portsmouth, Osservatorio di Astrofisica e Scienza dello Spazio, National Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, Osservatorio Astrofisico di Torino, Roma Tre University, Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, Astronomical Observatory of Capodimonte, Universitat Autònoma de Barcelona, Institute for High Energy Physics, Barcelona Institute of Science and Technology, Port d'Informació Científica, Astronomical Observatory of Rome, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, University of Naples Federico II, Arcetri Astrophysical Observatory, University of Bologna, Centre National d'Études Spatiales, Institut National de Physique Nucléaire et de Physique des Particules, European Space Agency, European Space Astronomy Centre, European Space Research Institute, Lyon 1 Université, Centre National de la Recherche Scientifique, Institut de Physique des 2 Infinis de Lyon, University of Lisbon, Institute of Astrophysics and Space Sciences, Université Paris-Saclay, Institut d'Astrophysique Spatiale, University of Geneva, University of Oxford, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Astrophysique, Instrumentation et Modélisation, Institute of Space Sciences, Institut d'Estudis Espacials de Catalunya, Trieste Astronomical Observatory, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Osservatorio Astronomico di Padova, Ludwig-Maximilians-Universität München, University of Oslo, Jet Propulsion Laboratory, Max Planck Institute for Astronomy, von Hoerner & Sulger (Germany), Aix-Marseille Université, Centre de physique des particules de Marseille, Leiden University, Leiden Observatory, University of Helsinki, Helsinki Institute of Physics, Netherlands Institute for Radio Astronomy, University of Bonn, Durham University, École Polytechnique Fédérale de Lausanne, European Space Research and Technology Centre, Aarhus University, Institute of Space Science - INFLPR Subsidiary, Max Planck Institute for Astrophysics, University of Padua, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Universidad Politécnica de Cartagena, University of Groningen, California Institute of Technology, Infrared Processing and Analysis Center, Brera Astronomical Observatory, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin, Agenzia Spaziale Italiana
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,580
Funders: National Aeronautics and Space Administration, Alexander von Humboldt-Stiftung, UK Research and Innovation, European Space Agency, Royal Society, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Academy of Finland, Bundesministerium für Bildung und Forschung, Agenzia Spaziale Italiana, Max-Planck-Gesellschaft, National Astronomical Observatory of Japan, Agenția Spațială Română, Norsk Romsenter, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, INAF-Osservatorio Astronomico di Padova, Staatssekretariat für Bildung, Forschung und Innovation, H2020 European Research Council
Awards: G198410584, UCL Astrophysics Consolidated Grant 2021-2024, G2916289761, Astrophysics, Cosmology and Gravitation at Portsmouth 2022-2025, Global Lensing Observations to go Beyond Einstein, G4767683273, 基于DECaLS巡天利用星系-星系引力透镜研究星系-暗晕关联, Astronomy and Astrophysics at Edinburgh, G5178825541, Turning cosmic shear into a litmus test for the standard model of cosmology, G6557010141, G6718691005, G7328947028
OpenAlex ID: W4284705102