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次世代大規模銀河サーベイにおける弱重力レンズ効果測定を通した暗黒エネルギーの研究

Research Project

Project/Area Number 14J11501
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Condensed matter physics I
Research InstitutionThe University of Tokyo

Principal Investigator

宮武 広直  東京大学, カブリ数物連携宇宙研究機構, 特別研究員(PD)

Project Period (FY) 2014-04-25 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords宇宙論 / 重力レンズ / 銀河団 / 宇宙の大規模構造 / ダークエネルギー / ダークマター / 宇宙の構造形成
Outline of Annual Research Achievements

2014年3月から、すばる望遠鏡超広視野主焦点カメラHyper Suprime-Cam(HSC)による大規模銀河サーベイが始まった。昨年度に引き続き高精度弱重力レンズ効果測定法の開発を進めた。具体的には、銀河の周りの弱重力レンズ信号を計算し、過去の観測の結果と一致することを確かめるなどの研究を行った。

HSCサーベイとAtacama Cosmology Telecsope(ACT)サーベイのデータを組み合わせて、銀河団計数から宇宙論パラメータを制限する研究の準備として、Canada-France-Hawaii-Telecope CS82サーベイとACTサーベイを組み合わせ、弱重力レンズ効果を用いて銀河団の質量を較正する研究を行った。

今年度は新たに銀河団のアセンブリ・バイアスの研究を行った。銀河・銀河団は暗黒物質の分布のうち、重力崩壊によって形成されたハローの中に棲んでいる。よって銀河・銀河団の分布は暗黒物質の分布をバイアスして反映している。両者の分布の関係は、従来はハローの質量のみに依存すると考えられてきたが、理論的もしくは数値的な研究によってハローの他の性質にも依存することが指摘されてきた。これをアセンブリ・バイアスという。今回の研究では、Sloan Digital Sky Surveyの銀河団サンプルを、メンバー銀河の中心集中度によって2つのサンプルに分け、銀河団の弱重力レンズ効果と2点相関関数を組み合わせることで、アセンブリ・バイアスを世界で初めて検出した。アセンブリ・バイアスは将来の精密宇宙論の測定において系統誤差となると指摘されており、本研究でアセンブリ・バイアスの理解の第一歩を踏み出したことは大きな意義がある。本研究成果はPhysical Leview Lettersに掲載され、注目論文に選ばれた。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (22 results)

All 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 10 results,  Acknowledgement Compliant: 6 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 6 results)

  • [Int'l Joint Research] Princeton University/University of Pennsylvania/Carnegie Mellon University(米国)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Evidence of Halo Assembly Bias in Massive Clusters2016

    • Author(s)
      H. Miyatake, S. More, M. Takada et al.
    • Journal Title

      Phys. Rev. Letters

      Volume: 116 Issue: 4 Pages: 041301-041301

    • DOI

      10.1103/physrevlett.116.041301

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Detection of stacked filament lensing between SDSS luminous red galaxies2016

    • Author(s)
      J. Clampitt, H. Miyatake, B. Jain, M. Takada
    • Journal Title

      MNRAS

      Volume: 457 Issue: 3 Pages: 2391-2400

    • DOI

      10.1093/mnras/stw142

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III2015

    • Author(s)
      S. Alam, F. Albareti, C. Prieto, F. Anders, S. Anderson, T. Anderton, B. Andrews, E. Armengaud, E. Aubourg, S. Bailey, S. Basu, J. Bautista, R. Beaton, T. Beers, C. Bender, A. Berlind, F. Beutler, H. Miyatake, et al.
    • Journal Title

      ApJS

      Volume: 219 Issue: 1 Pages: 12-12

    • DOI

      10.1088/0067-0049/219/1/12

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] GREAT3 results - I. Systematic errors in shear estimation and the impact of real galaxy morphology2015

    • Author(s)
      R. Mandelbaum, B. Rowe, R. Armstrong, D. Bard, E. Bertin, J. Bosch, D. Boutigny, F. Courbin, W. Dawson, A. Donnarumma, I. Conti, R. Gavazzi, M. Gentile, M. Gill, D. Hogg, E. Huff, J. Jee, T. Kacprzak, H. Miyatake et al.
    • Journal Title

      MNRAS

      Volume: 450 Issue: 3 Pages: 2963-3007

    • DOI

      10.1093/mnras/stv781

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Weak Lensing Signal and the Clustering of BOSS Galaxies I: Measurements2015

    • Author(s)
      Miyatake, Hironao; More, Surhud; Mandelbaum, Rachel; Takada, Masahiro; Spergel, David. N.; Kneib, Jean-Paul; Schneider, Donald P.; Brinkmann, J.; Brownstein, Joel R.
    • Journal Title

      The Astrophysical Journal

      Volume: 印刷中

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The Weak Lensing Signal and the Clustering of BOSS Galaxies II: Astrophysical and Cosmological Constraints2015

    • Author(s)
      More, Surhud; Miyatake, Hironao; Mandelbaum, Rachel; Takada, Masahiro; Spergel, David; Brownstein, Joel; Schneider, Donald P.
    • Journal Title

      The Astrophysical Journal

      Volume: 印刷中

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] GALSIM: The modular galaxy image simulation toolkit2015

    • Author(s)
      Rowe, B. T. P.; Jarvis, M.; Mandelbaum, R.; Bernstein, G. M.; Bosch, J.; Simet, M.; Meyers, J. E.; Kacprzak, T.; Nakajima, R.; Zuntz, J.; Miyatake, H.; Dietrich, J. P.; Armstrong, R.; Melchior, P.; Gill, M. S. S.
    • Journal Title

      Astronomy and Computing

      Volume: 10 Pages: 121150-121150

    • DOI

      10.1016/j.ascom.2015.02.002

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The Tenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Apache Point Observatory Galactic Evolution Experiment2014

    • Author(s)
      Ahn, et al.
    • Journal Title

      The Astrophysical Journal Supplement

      Volume: 221-2 Issue: 2 Pages: 16-16

    • DOI

      10.1088/0067-0049/211/2/17

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The GREAT3 challenge2014

    • Author(s)
      Miyatake, H.; Mandelbaum, R.; Rowe, B.
    • Journal Title

      Journal of Instrumentation

      Volume: 9-4 Issue: 04 Pages: C04031-C04031

    • DOI

      10.1088/1748-0221/9/04/c04031

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Third Gravitational Lensing Accuracy Testing (GREAT3) Challenge Handbook2014

    • Author(s)
      Mandelbaum, et al.
    • Journal Title

      The Astrophysical Journal Supplement

      Volume: 212-1 Issue: 1 Pages: 28-28

    • DOI

      10.1088/0067-0049/212/1/5

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Presentation] Evidence of Halo Assembly Bias in Massive Clusters2016

    • Author(s)
      Hironao Miyatake
    • Organizer
      JPL lunch seminar
    • Place of Presentation
      NASA Jet Propulsion Laboratory (USA)
    • Year and Date
      2016-03-18
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 銀河団におけるハロー ・ アセンブリ ・ バイアスの初検出2016

    • Author(s)
      宮武広直
    • Organizer
      日本天文学会2016年春季年会
    • Place of Presentation
      首都大学東京(東京都八王子市)
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] Evidence of Halo Assembly Bias in Massive Clusters2016

    • Author(s)
      Hironao Miyatake
    • Organizer
      LSST Dark Energy Science Collaboration meeting
    • Place of Presentation
      Stanford Linear Accelerator Laboratory (USA)
    • Year and Date
      2016-03-08
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] HSC Cluster Studies2016

    • Author(s)
      Hironao Miyatake
    • Organizer
      LSST Dark Energy Science Collaboration meeting
    • Place of Presentation
      Stanford Linear Accelerator Laboratory (USA)
    • Year and Date
      2016-03-08
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evidence of Halo Assembly Bias in Massive Clusters2016

    • Author(s)
      Hironao Miyatake
    • Organizer
      IPMU lunch seminar
    • Place of Presentation
      東京大学(千葉県柏市)
    • Year and Date
      2016-02-09
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evidence of Halo Assembly Bias in Massive Clusters2016

    • Author(s)
      Hironao Miyatake
    • Organizer
      名古屋大学宇宙論研究室セミナー
    • Place of Presentation
      名古屋大学(愛知県名古屋市)
    • Year and Date
      2016-01-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] HSC Lensing Systematic Tests2015

    • Author(s)
      Hironao Miyatake
    • Organizer
      Future Challenges in Shear Estimation
    • Place of Presentation
      University of Pennsylvania (USA)
    • Year and Date
      2015-11-09
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cross-correlation with tSZ and kSZ2015

    • Author(s)
      Hironao Miyatake
    • Organizer
      LSST Dark Energy Science Collaboration Theory of Joint Probes meeting
    • Place of Presentation
      University of Pittsburgh (USA)
    • Year and Date
      2015-04-13
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hyper Suprime-Camにおける銀河形状測定の系統誤差の評価2015

    • Author(s)
      宮武広直, Steve Bickerton, Alexie Leauthaud, Surhud More, 岡部信広, 高田昌広, 大栗真宗, 浜名崇, 宮崎聡, Bob Armstrong, Jim Bosch, Robert Lupton, Paul Price, 梅津敬一, Rachel Mandelbaum, Melanie Simet, 内海洋輔, 西澤淳, 大倉悠貴, 他 HSC weak lensing analysis team
    • Organizer
      日本天文学会2015年春季大会
    • Place of Presentation
      大阪大学
    • Year and Date
      2015-03-18 – 2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] A Synergy of HSC and ACTPol Surveys2014

    • Author(s)
      Hironao Miyatake
    • Organizer
      Workshop on Synergy of HSC and Hiroshima CORE-U projects for Galaxy Clusters and Astronomical Transients
    • Place of Presentation
      Hiroshima University
    • Year and Date
      2014-08-27
    • Related Report
      2014 Annual Research Report
  • [Presentation] Weak Lensing Signal and Clustering of SDSS-III/CMASS Galaxies2014

    • Author(s)
      Hironao Miyatake
    • Organizer
      KICP seminar
    • Place of Presentation
      KICP, University of Chicago
    • Year and Date
      2014-05-02
    • Related Report
      2014 Annual Research Report

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Published: 2015-01-22   Modified: 2024-03-26  

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