Fulltext

Cosmological constraints from weak lensing peak statistics with Canada-France-Hawaii Telescope Stripe 82 Survey

Liu, Xiangkun ; Pan, Chuzhong ; Li, Ran ; Shan, Huanyuan ; Wang, Qiao ; Fu, Liping ; Fan, Zuhui ; Kneib, Jean-Paul ; Leauthaud, Alexie ; Van Waerbeke, Ludovic ; Makler, Martin ; Moraes, Bruno ; Erben, Thomas ; Charbonnier, Aldée

In: Monthly Notices of the Royal Astronomical Society, 2015, vol. 450, no. 3, p. 2888-2902

Ajouter à la liste personnelle
    Titre
    • Cosmological constraints from weak lensing peak statistics with Canada-France-Hawaii Telescope Stripe 82 Survey
    Auteur
    • Liu, Xiangkun. Department of Astronomy, Peking University, Beijing 100871, China
    • Pan, Chuzhong. Department of Astronomy, Peking University, Beijing 100871, China
    • Li, Ran. Key Laboratory for Computational Astrophysics, The Partner Group of Max Planck Institute for Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
    • Shan, Huanyuan. Laboratoire d'astrophysique (LASTRO), Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
    • Wang, Qiao. Key Laboratory for Computational Astrophysics, The Partner Group of Max Planck Institute for Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
    • Fu, Liping. Shanghai Key Lab for Astrophysics, Shanghai Normal University, Shanghai 200234, China
    • Fan, Zuhui. Department of Astronomy, Peking University, Beijing 100871, China
    • Kneib, Jean-Paul. Laboratoire d'astrophysique (LASTRO), Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
    • Leauthaud, Alexie. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, Kashiwa, Chiba 277-8582, Japan
    • Van Waerbeke, Ludovic. Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada
    • Makler, Martin. Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, Rio de Janeiro, RJ 22290-180, Brazil
    • Moraes, Bruno. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
    • Erben, Thomas. Argelander Institute for Astronomy, University of Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany
    • Charbonnier, Aldée. Observatório do Valongo, Universidade Federal do Rio de Janeiro, Ladeira do Pedro Antônio 43, Saúde, Rio de Janeiro, RJ 20080-090, Brazil
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Monthly Notices of the Royal Astronomical Society, 2015, vol. 450, no. 3, p. 2888-2902. Oxford University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:297218
    Summary
    We derived constraints on cosmological parameters using weak lensing peak statistics measured on the ∼ 130 deg2 of the Canada-France-Hawaii Telescope Stripe 82 Survey. This analysis demonstrates the feasibility of using peak statistics in cosmological studies. For our measurements, we considered peaks with signal-to-noise ratio in the range of ν = [3, 6]. For a flat Λ cold dark matter model with only (Ωm, σ8) as free parameters, we constrained the parameters of the following relation Σ8 = σ8(Ωm/0.27)α to be Σ8 = 0.82 ± 0.03 and α = 0.43 ± 0.02. The α value found is considerably smaller than the one measured in two-point and three-point cosmic shear correlation analyses, showing a significant complement of peak statistics to standard weak lensing cosmological studies. The derived constraints on (Ωm, σ8) are fully consistent with the ones from either WMAP9 or Planck. From the weak lensing peak abundances alone, we obtained marginalized mean values of $\Omega _{\rm m}=0.38^{+0.27}_{-0.24}$ and σ8 = 0.81 ± 0.26. Finally, we also explored the potential of using weak lensing peak statistics to constrain the mass-concentration relation of dark matter haloes simultaneously with cosmological parameters