- Physical Review Journals
All JournalsPhysics Magazine

Physical Review D

Export citation

Export citation

Choose format for download:

Download Citation
  • Featured in Physics
  • Editors' Suggestion

Hyper Suprime-Cam Year 3 results: Cosmology from cosmic shear power spectra

Roohi Dalal1,*, Xiangchong Li2,3, Andrina Nicola4,1, Joe Zuntz5, Michael A. Strauss1, Sunao Sugiyama3,6, Tianqing Zhang2, Markus M. Rau2,7, Rachel Mandelbaum2 et al.

Masahiro Takada3, Surhud More8,3, Hironao Miyatake9,10,3, Arun Kannawadi1, Masato Shirasaki11,12, Takanori Taniguchi3,6, Ryuichi Takahashi13, Ken Osato14,15, Takashi Hamana11, Masamune Oguri14,15,3, Atsushi J. Nishizawa16,9, Andrés A. Plazas Malagón17,18,1, Tomomi Sunayama19,9, David Alonso20, Anže Slosar21, Wentao Luo22,23, Robert Armstrong24, James Bosch1, Bau-Ching Hsieh25, Yutaka Komiyama26, Robert H. Lupton1, Nate B. Lust1, Lauren A. MacArthur1, Satoshi Miyazaki27, Hitoshi Murayama28,29,3, Takahiro Nishimichi30,3,31, Yuki Okura11, Paul A. Price1, Philip J. Tait27, Masayuki Tanaka11, and Shiang-Yu Wang32

  • 1Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA
  • 2McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USA
  • 3Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo, Chiba 277-8583, Japan
  • 4Argelander Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
  • 5Institute for Astronomy, Royal Observatory Edinburgh, University of Edinburgh, EH9 3HJ, United Kingdom
  • 6Department of Physics, The University of Tokyo, Bunkyo, Tokyo 113-0031, Japan
  • 7High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
  • 8The Inter-University Centre for Astronomy and Astrophysics, Post bag 4, Ganeshkhind, Pune 411007, India
  • 9Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya, 464-8602, Japan
  • 10Institute for Advanced Research, Nagoya University, Nagoya 464-8601, Japan
  • 11National Astronomical Observatory of Japan, National Institutes of Natural Sciences, Mitaka, Tokyo 181-8588, Japan
  • 12The Institute of Statistical Mathematics, Tachikawa, Tokyo 190-8562, Japan
  • 13Faculty of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
  • 14Center for Frontier Science, Chiba University, Chiba 263-8522, Japan
  • 15Department of Physics, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
  • 16Gifu Shotoku Gakuen University, 1-1 Takakuwanishi, Yanaizu, Gifu, 501-6194, Japan
  • 17Kavli Institute for Particle Astrophysics and Cosmology, P.O. Box 20450, MS29, Stanford, California 94309, USA
  • 18SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS29, Menlo Park, California 94025, USA
  • 19Department of Astronomy and Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85719, USA
  • 20Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
  • 21Brookhaven National Laboratory, Upton, New York 11973, USA
  • 22School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 23CAS Key Laboratory for Researches in Galaxies and Cosmology/Department of Astronomy, School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 24Lawrence Livermore National Laboratory, Livermore, California 94551, USA
  • 25Academia Sinica Institute of Astronomy and Astrophysics, No. 1, Section IV, Roosevelt Road, Taipei 10617, Taiwan
  • 26Department of Advanced Sciences, Faculty of Science and Engineering, Hosei University, 3-7-2 Kajino-cho, Koganei-shi, Tokyo 184-8584, Japan
  • 27Subaru Telescope, National Astronomical Observatory of Japan, 650 North Aohoku Place Hilo, Hawaii 96720, USA
  • 28Berkeley Center for Theoretical Physics, University of California, Berkeley, California 94720, USA
  • 29Theory Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 30Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
  • 31Department of Astrophysics and Atmospheric Sciences, Faculty of Science, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
  • 32Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan

  • *rdalal@princeton.edu
PDF

Phys. Rev. D 108, 123519 – Published 11 December, 2023

DOI: https://doi.org/10.1103/PhysRevD.108.123519

Abstract

We measure weak lensing cosmic shear power spectra from the 3-year galaxy shear catalog of the Hyper Suprime-Cam (HSC) Subaru Strategic Program imaging survey. The shear catalog covers 416  deg2 of the northern sky, with a mean i-band seeing of 0.59 arcsec and an effective galaxy number density of 15  arcmin−2 within our adopted redshift range. With an i-band magnitude limit of 24.5 mag, and four tomographic redshift bins spanning 0.3≤zph≤1.5 based on photometric redshifts, we obtain a high-significance measurement of the cosmic shear power spectra, with a signal-to-noise ratio of approximately 26.4 in the multipole range 300<ℓ<1800. The accuracy of our power spectrum measurement is tested against realistic mock shear catalogs, and we use these catalogs to get a reliable measurement of the covariance of the power spectrum measurements. We use a robust blinding procedure to avoid confirmation bias, and model various uncertainties and sources of bias in our analysis, including point spread function systematics, redshift distribution uncertainties, the intrinsic alignment of galaxies and the modeling of the matter power spectrum. For a flat ΛCDM model, we find S8≡σ8(Ωm/0.3)0.5=0.776−0.033+0.032, which is in excellent agreement with the constraints from the other HSC Year 3 cosmology analyses, as well as those from a number of other cosmic shear experiments. This result implies a ∼2σ-level tension with the Planck 2018 cosmology. We study the effect that various systematic errors and modeling choices could have on this value, and find that they can shift the best-fit value of S8 by no more than ∼0.5σ, indicating that our result is robust to such systematics.

View figure in article

Physics Subject Headings (PhySH)

Viewpoint

Inconsistency Turns Up Again for Cosmological Observations

Published 11 December, 2023

A new analysis of the distribution of matter in the Universe continues to find a discrepancy in the clumpiness of dark matter in the late and early Universe, suggesting a fundamental error in the standard cosmological model.

See more in Physics

Authorization Required

We need you to provide your credentials before accessing this content.

Other Options

References (Subscription Required)

Outline

Information

Phys. Rev. D 108, 123519– Published 11 December, 2023
  • Received 5 April 2023
  • Accepted 16 August 2023
Crossmark - Check for updates button

© 2023 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation