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Statistical study of bias in astronomical objects and large-scale structure

Research Project

Project/Area Number 15K05074
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization (2017-2018)
Nagoya University (2015-2016)

Principal Investigator

Matsubara Takahiko  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (00282715)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords宇宙物理学 / 宇宙論 / 宇宙の大規模構造 / 天体バイアス / 非線形摂動論 / 摂動論 / 原始ブラックホール / ハローモデル
Outline of Final Research Achievements

The integrated perturbation theory is a set of original methods in cosmological perturbation theory. In this formalism, the biasing effect of astronomical objects is generally included. While there are uncertainties in the actural modeling of bias, the "bias functions" play important roles in this theory. In this study, analytic expressions of the bias functions are explicitly derived for several models of biasing. Using the derived expressions, we studied how different biasing schemes finally affects the observable quantities such as the power spectrum and the correlation functions. As a result, the differences by the different biasing schemes turned out to be smaller on larger scales and at larger redshift.

Academic Significance and Societal Importance of the Research Achievements

宇宙の大規模構造の解析は、私たちの宇宙がどのようなものなのかを明らかにする上で重要な役割を担っている。その理論的理解を進める上で、天体バイアスの問題は克服すべき重大な課題の一つであるが、バイアスを第一原理から理論的に扱うことは不可能に近い。そこで天体形成のモデル化が必要になる。宇宙論的な解析においては大スケールの情報が有用であるため、大スケール側で天体バイアスの効果を系統的に調べられるようになったことは、重要な進歩である。将来行われる大規模な銀河サーベイの解析に対する基礎を与えることになり、それを通じて私たちの宇宙がどのようにできているのかという根源的な問題を実証的に調べることが可能になる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (22 results)

All 2019 2018 2017 2016 2015 Other

All Journal Article (8 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 8 results,  Open Access: 3 results,  Acknowledgement Compliant: 3 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results) Book (5 results) Remarks (2 results)

  • [Journal Article] Intrinsic galaxy alignment from angular dependent primordial non-Gaussianity2018

    • Author(s)
      Kogai Kazuhiro、Matsubara Takahiko、Nishizawa Atsushi J.、Urakawa Yuko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2018 Issue: 08 Pages: 014-014

    • DOI

      10.1088/1475-7516/2018/08/014

    • NAID

      120006536936

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Studying topological structure of 21-cm line fluctuations with 3D Minkowski functionals before reionization2017

    • Author(s)
      Shintaro Yoshiura, Hayato Shimabukuro, Keitaro Takahashi, Takahiko Matsubara
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 465 Issue: 1 Pages: 394-402

    • DOI

      10.1093/mnras/stw2701

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Constraining higher-order parameters for primordial non-Gaussianities from power spectra and bispectra of imaging surveys2016

    • Author(s)
      Ichihiko Hashimoto, Atsushi Taruya, Takahiko Matsubara, Toshiya Namikawa, Shuichiro Yokoyama
    • Journal Title

      Physical Review D

      Volume: 93 Issue: 10

    • DOI

      10.1103/physrevd.93.103537

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Impacts of biasing schemes in the one-loop integrated perturbation theory2016

    • Author(s)
      Takahiko Matsubara, Vincent Desjacques
    • Journal Title

      Physical Review D

      Volume: 93 Issue: 12

    • DOI

      10.1103/physrevd.93.123522

    • NAID

      120005844099

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at z~1.42016

    • Author(s)
      T. Okumura, et al. (including R. Takahashi, the 21th in 25 co-authors)
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 68 Issue: 3 Pages: 38-38

    • DOI

      10.1093/pasj/psw029

    • Related Report
      2016 Research-status Report 2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lensing-induced morphology changes in CMB temperature maps in modified gravity theories2016

    • Author(s)
      Dipak Munshi, Bin Hu, Takahiko Matsubara, Peter Coles, Alan Heavens
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 04 Issue: 04 Pages: 056-056

    • DOI

      10.1088/1475-7516/2016/04/056

    • Related Report
      2016 Research-status Report 2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Subaru FMOS Galaxy Redshift Survey (FastSound). I. Overview of the Survey Targeting on Halpha Emitters at z ~ 1.4 Survey2015

    • Author(s)
      Motonari TONEGAWA et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Issue: 5 Pages: 81-81

    • DOI

      10.1093/pasj/psv044

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Recursive Solutions of Lagrangian Perturbation Theory2015

    • Author(s)
      Takahiko Matsubara
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 2

    • DOI

      10.1103/physrevd.92.023534

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Analytic Minkowski Functionals in CMB2017

    • Author(s)
      Takahiko Matsubara
    • Organizer
      "Workshop on Minkowski functionals"
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The Lagrangian perturbation theory and the integrated perturbation theory2016

    • Author(s)
      Takahiko Matsubara
    • Organizer
      Nonlinear evolution of the large scale structure of the Universe: Theory meets Expectations
    • Place of Presentation
      Paris, France
    • Year and Date
      2016-05-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The integrated perturbation theory2016

    • Author(s)
      Takahiko Matsubara
    • Organizer
      3rd Korea-Japan workshop on Dark Energy
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2016-04-04
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dynamics: statistics of extrema and integrated perturbation theory2016

    • Author(s)
      Takahiko Matsubara
    • Organizer
      Statistics of Extrema in Large Scale Structure
    • Place of Presentation
      Lorentz Center@Snellius, Leiden, Netherland
    • Year and Date
      2016-03-07
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 大規模構造における統合摂動論とバイアス効果2016

    • Author(s)
      松原隆彦
    • Organizer
      神戸大学素粒子宇宙理論研究室セミナー
    • Place of Presentation
      神戸大学
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] 大規模構造における統合摂動論と非局所バイアス2015

    • Author(s)
      松原隆彦
    • Organizer
      関西相対論・宇宙論合同セミナー
    • Place of Presentation
      京都大学
    • Year and Date
      2015-08-01
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] 宇宙論における非線形構造形成2015

    • Author(s)
      松原隆彦
    • Organizer
      2015年度 第45回天文・天体物理若手 夏の学校
    • Place of Presentation
      長野県千曲市
    • Year and Date
      2015-07-27
    • Related Report
      2015 Research-status Report
    • Invited
  • [Book] 文系でもよくわかる 世界の仕組みを物理学で知る2019

    • Author(s)
      松原隆彦
    • Total Pages
      208
    • Publisher
      山と渓谷社
    • ISBN
      9784635130103
    • Related Report
      2018 Annual Research Report
  • [Book] 図解 宇宙のかたち 「大規模構造」を読む2018

    • Author(s)
      松原隆彦
    • Total Pages
      280
    • Publisher
      光文社
    • ISBN
      9784334043742
    • Related Report
      2018 Annual Research Report
  • [Book] 私たちは時空を超えられるか2018

    • Author(s)
      松原隆彦
    • Total Pages
      192
    • Publisher
      SBクリエイティブ
    • ISBN
      9784797388992
    • Related Report
      2018 Annual Research Report
  • [Book] 宇宙の誕生と終焉2016

    • Author(s)
      松原隆彦
    • Total Pages
      208
    • Publisher
      SBクリエイティブ
    • Related Report
      2015 Research-status Report
  • [Book] 人は宇宙をどのように考えてきたか2015

    • Author(s)
      Helge S. Kragh著、竹内努・市來淨與・松原隆彦共訳
    • Total Pages
      416
    • Publisher
      共立出版
    • Related Report
      2015 Research-status Report
  • [Remarks] 松原隆彦 ホーム

    • URL

      http://tmcosmos.org/taka/

    • Related Report
      2017 Research-status Report
  • [Remarks] RESEARCH

    • URL

      http://www.a.phys.nagoya-u.ac.jp/~taka/research/

    • Related Report
      2015 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

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