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Synergy of galaxy imaging and spectroscopic surveys and CMB to probe dark components in the Universe

Research Project

Project/Area Number 16K17684
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

Hikage Chiaki  東京大学, カブリ数物連携宇宙研究機構, 特任准教授 (00623555)

Project Period (FY) 2016-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords宇宙大規模構造 / ダークマター / ダークエネルギー / 重力レンズ / 宇宙の大規模構造 / 宇宙の構造形成 / 銀河サーベイ / 宇宙物理 / 天文 / 理論天文学
Outline of Final Research Achievements

I performed various theoretical and observational researches to probe the nature of dark matter and dark energy in the Universe by combining galaxy imaging, spectroscopic surveys and CMB measurements. Using the first year data of Subaru Hyper Suprime-Cam galaxy imaging survey, I reconstructed 3D dark matter maps over 9 billion light years from us and measured the growth of cosmic structure at 3.6% uncertainty (68%CL), which was the world-top level accuracy. I also tested the validity of the standard cosmological model ΛCDM by comparing our result with Planck CMB measurements. I also derived perturbative formula of galaxy density fields after the BAO reconstruction method is applied and found that the nonlinear gravitational effect becomes weak in post-reconstructed field and thereby the accuracy of cosmic growth rate measurement is significantly improved.

Academic Significance and Societal Importance of the Research Achievements

宇宙の95%以上を占めるダークマターとダークエネルギーは現代の物理学、天文学にまたがる最大の謎である。すばるハイパー・シュプリーム・カム(HSC)によって遠方かつ広い天域にわたってダークマターの構造が成長する様子を調べることができ、ダーク成分の謎に迫ることができる。今回、すばるHSC計画の第1期データを用いたコズミックシア解析を行った結果、Planck衛星による宇宙初期と若干の食い違いが見られた。本結果は記者会見を通じて広く一般向けに報道を行い、新聞や科学系の雑誌でも紹介された。今後さらに理論・観測の両面で精度を上げることで、現在の標準宇宙模型を超える新たな物理の発見が期待できる。

Report

(7 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (33 results)

All 2022 2020 2019 2018 2017 2016

All Journal Article (18 results) (of which Int'l Joint Research: 15 results,  Peer Reviewed: 18 results,  Open Access: 13 results,  Acknowledgement Compliant: 3 results) Presentation (15 results) (of which Int'l Joint Research: 8 results,  Invited: 5 results)

  • [Journal Article] Minkowski functionals and the nonlinear perturbation theory in the large-scale structure: Second-order effects2022

    • Author(s)
      Takahiko Matsubara, Chiaki Hikage, Satoshi Kuriki
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 2 Pages: 23527-23527

    • DOI

      10.1103/physrevd.105.023527

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Covariance of the redshift-space matter power spectrum after reconstruction2020

    • Author(s)
      C. Hikage, R. Takahashi, K. Koyama
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 8 Pages: 083514-083514

    • DOI

      10.1103/physrevd.102.083514

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dual Supermassive Black Holes at Close Separation Revealed by the Hyper Suprime-Cam Subaru Strategic Program2020

    • Author(s)
      Silverman J.D., Tang S., Lee K.-G., T. Hartwig, A. Goulding, M.A. Strauss, M. Schramm, X. Ding, R. Riffel, S. Fujimoto, C. Hikage, M. Imanishi, K. Iwasawa, K. Jahnke, I. Kayo, N. Kashikawa, T. Kawaguchi, 他16名
    • Journal Title

      The Astrophysical Journal

      Volume: 899 Issue: 2 Pages: 154-154

    • DOI

      10.3847/1538-4357/aba4a3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data2020

    • Author(s)
      Hamana Takashi、Shirasaki Masato、Miyazaki Satoshi、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 72 Issue: 1 Pages: 16-16

    • DOI

      10.1093/pasj/psz138

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New constraints on the mass bias of galaxy clusters from the power spectra of the thermal Sunyaev-Zeldovich effect and cosmic shear2020

    • Author(s)
      R. Makiya, C. Hikage, E. Komatsu
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 72 Issue: 2 Pages: 26-26

    • DOI

      10.1093/pasj/psz147

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Perturbation theory for the redshift-space matter power spectra after reconstruction2020

    • Author(s)
      C. Hikage, K. Koyama, R. Takahashi
    • Journal Title

      Physical Review D

      Volume: 101 Issue: 4 Pages: 043510-043510

    • DOI

      10.1103/physrevd.101.043510

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Second Data Release of the Hyper Suprime-Cam Subaru Strategic Program2019

    • Author(s)
      Aihara et al. (including C. Hikage)
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 71 Issue: 6 Pages: 114-114

    • DOI

      10.1093/pasj/psz103

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data2019

    • Author(s)
      Hikage Chiaki、Oguri Masamune、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 印刷中 Issue: 2 Pages: 43-43

    • DOI

      10.1093/pasj/psz010

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Weak-lensing Mass Calibration of ACTPol Sunyaev-Zel'dovich Clusters with the Hyper Suprime-Cam Survey2019

    • Author(s)
      Miyatake Hironao、Battaglia Nicholas、Hilton Matt et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 875 Issue: 1 Pages: 63-63

    • DOI

      10.3847/1538-4357/ab0af0

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Hyper Suprime-Cam SSP Survey: Overview and survey design2018

    • Author(s)
      Aihara Hiroaki、Arimoto Nobuo、Armstrong Robert、 et al. (including Imanishi M.)
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: SP1 Pages: 1-15

    • DOI

      10.1093/pasj/psx066

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First data release of the Hyper Suprime-Cam Subaru Strategic Program2018

    • Author(s)
      Aihara Hiroaki、Armstrong Robert、Bickerton Steven、et al. (including Imanishi M.)
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: SP1 Pages: 1-34

    • DOI

      10.1093/pasj/psx081

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field2018

    • Author(s)
      Miyaoka et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: SP1 Pages: 1-20

    • DOI

      10.1093/pasj/psx132

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Two- and three-dimensional wide-field weak lensing mass maps from the Hyper Suprime-Cam Subaru Strategic Program S16A data2018

    • Author(s)
      Oguri, Masamune; Miyazaki, Satoshi; Hikage, Chiaki; Mandelbaum, Rachel; Utsumi, Yousuke; Miyatake, Hironao; Takada, Masahiro; Armstrong, Robert; Bosch, James; Komiyama, Yutaka; Leauthaud, Alexie; More, Surhud; Nishizawa, Atsushi J.; Okabe, Nobuhiro; Tanaka, Masayuki
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: SP1 Pages: 1-14

    • DOI

      10.1093/pasj/psx070

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Perturbation theory for BAO reconstructed fields: One-loop results in the real-space matter density field2017

    • Author(s)
      Hikage Chiaki、Koyama Kazuya、Heavens Alan
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 4 Pages: 43513-43513

    • DOI

      10.1103/physrevd.96.043513

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The first-year shear catalog of the Subaru Hyper Suprime-Cam Subaru Strategic Program Survey2017

    • Author(s)
      Mandelbaum Rachel、Miyatake Hironao、Hamana Takashi、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: SP1 Pages: 1-43

    • DOI

      10.1093/pasj/psx130

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An analytic halo approach to the bispectrum of galaxies in redshift space2017

    • Author(s)
      Kazuhiro Yamamoto, Yue Nan, Chiaki Hikage
    • Journal Title

      Physical Review D

      Volume: 95 Issue: 4 Pages: 043528-043528

    • DOI

      10.1103/physrevd.95.043528

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] A pseudo-spectrum analsyis of galaxy-galaxy lensing2016

    • Author(s)
      Chaki Hikage, Masamune Oguri
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 462 Issue: 2 Pages: 1359-1370

    • DOI

      10.1093/mnras/stw1721

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Testing statistics of the CMB B-mode polarization toward unambiguously establishing quantum fluctuation of the vacuum2016

    • Author(s)
      Maresuke Shiraishi, Chiaki Hikage, Ryo Namba, Toshiya Namikawa, Masashi Hazumi
    • Journal Title

      Physical Review D

      Volume: 94 Issue: 4 Pages: 043506-043506

    • DOI

      10.1103/physrevd.94.043506

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 宇宙大構造のアンチエイジング II: 再構築後のパワースペクトルの共分散2020

    • Author(s)
      日影千秋
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 標準宇宙模型のほころびか!? 銀河撮像・分光観測による精密宇宙論2020

    • Author(s)
      日影千秋
    • Organizer
      理論天文学懇談会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Covariance of redshift-space matter power spectrum after reconstruction2020

    • Author(s)
      日影千秋
    • Organizer
      観測的宇宙論ワークショップ
    • Related Report
      2020 Research-status Report
  • [Presentation] Perturbation theory of redshift-space matter power spectra after reconstruction2020

    • Author(s)
      Chiaki Hikage
    • Organizer
      Workshop on "Cosmic Acceleration"
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam data2019

    • Author(s)
      Chiaki Hikage
    • Organizer
      LSST@ASIA conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Perturbation theory of redshift-space matter power spectra after reconstruction2019

    • Author(s)
      Chiaki Hikage
    • Organizer
      観測的宇宙論ワークショップ
    • Related Report
      2019 Research-status Report
  • [Presentation] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam data2019

    • Author(s)
      Chiaki Hikage
    • Organizer
      Workshop on Accurate lensing in the era of precision Cosmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam data2019

    • Author(s)
      Chiaki Hikage
    • Organizer
      Subaru Users Meeting FY2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam data2019

    • Author(s)
      Chiaki Hikage
    • Organizer
      Workshop on Accelerating Universe in the Dark
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam data2018

    • Author(s)
      Chiaki Hikage
    • Organizer
      COSMO-18
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam data2018

    • Author(s)
      Chiaki Hikage
    • Organizer
      CosKASI-ICG-NAOC-YITP Joint Workshop on Frontiers of Cosmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] すばる HSC 銀河を用いたコズミックシア測定と宇宙論2018

    • Author(s)
      日影千秋
    • Organizer
      日本天文学会
    • Related Report
      2017 Research-status Report
  • [Presentation] BAO再構築法による宇宙大規模構造のアンチエイジング2017

    • Author(s)
      Chiaki Hikage
    • Organizer
      日本天文学会
    • Place of Presentation
      九州大学(福岡県福岡市)
    • Year and Date
      2017-03-16
    • Related Report
      2016 Research-status Report
  • [Presentation] Morphological analysis of large-scale structure using Minkowski Functionals2017

    • Author(s)
      Chiaki Hikage
    • Organizer
      Workshop on Minkowski functionals
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Morphological analysis of cosmological random fields using Minkowski Functionals2017

    • Author(s)
      Chiaki Hikage
    • Organizer
      Workshop: Isotropic Random Fields in Astrophysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2016-04-21   Modified: 2023-01-30  

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