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2019 Fiscal Year Annual Research Report

Development and application of data analysis method for precision cosmology based on two- and three-point statistics of large-scale structure of the Universe

Research Project

Project/Area Number 16H03977
Research InstitutionKyoto University

Principal Investigator

樽家 篤史  京都大学, 基礎物理学研究所, 准教授 (40334239)

Co-Investigator(Kenkyū-buntansha) 松原 隆彦  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)
山本 一博  九州大学, 理学研究院, 教授 (50284154)
Project Period (FY) 2016-04-01 – 2020-03-31
Keywordsパワースペクトル / バイスペクトル / 共分散行列 / 宇宙の大規模構造 / 非線形重力進化 / 銀河バイアス
Outline of Annual Research Achievements

本課題の最終目標である、2点・3点統計を用いた宇宙論データ解析方法の完成に向け、本年度は、エラー共分散を考慮した2点・3点統計を用いた宇宙論データ解析法の構築を推し進めた。さらに、実用性と汎用性の観点からネックとなるべき問題点、系統誤差となりうる効果の定量的な影響を明らかにした。各メンバーの実績概要は以下の通りである。

研究代表者・樽家は、摂動計算をもとに非線形進化したランダム密度場を生成する高速計算コード(GridSPT)を用いて、パワースペクトルの共分散行列を観測効果などを入れて計算する手法を開発、N体シミュレーションとの比較から、その手法が将来観測において十分有効かつ妥当であることを明らかにした。また、将来観測の系統誤差の一因となる、広角度効果による銀河相関の非対称性を解析的に取り扱う手法を構築、線形理論を超えた定量的予言に成功した。さらに、線形応答理論のアプローチをもとに、摂動計算で求めた応答関数がN体シミュレーションと紫外領域でずれる原因を突き止め、摂動計算の予言を改善する手法について提案を行った。一方、分担者・松原は、宇宙大規模構造に関するピーク統計について、特に速度バイアスとの関連および長距離相関の解析的振る舞いについて、2点・3点統計量を含む性質を理論的に明らかにした。分担者・山本は、高速フーリエ変換を用いて銀河分布の多重極バイスペクトルを測定するPythonコードを開発、eBOSSの初期データに応用してバイスペクトルの測定を行った。研究協力者・高橋は、バイスペクトルのフィッティング公式の開発に成功、解析表式をもとにバイスペクトルを高速に理論予言する道を切り拓いた。また、赤方偏移空間において、再構築した密度ゆらぎの2点統計量に対する摂動論的テンプレートを構築、その有効性をシミュレーションを用いて定量的に明らかにした。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (37 results)

All 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (18 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 18 results) Presentation (13 results) (of which Int'l Joint Research: 8 results,  Invited: 9 results) Book (3 results)

  • [Int'l Joint Research] Observatoire de Paris/Laboratoire d'Astrophysique de Marseille/Institut d'Astrophysique de Paris(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      Observatoire de Paris/Laboratoire d'Astrophysique de Marseille/Institut d'Astrophysique de Paris
  • [Int'l Joint Research] 中央研究院天文及天文物理研究所(その他の国・地域)

    • Country Name
      その他の国・地域
    • Counterpart Institution
      中央研究院天文及天文物理研究所
  • [Int'l Joint Research] ポーツマス大学(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      ポーツマス大学
  • [Journal Article] Covariance of the matter power spectrum including the survey window function effect: N -body simulations versus fifth-order perturbation theory on grids2021

    • Author(s)
      Taruya Atsushi, Nishimichi Takahiro, Jeong Donghui
    • Journal Title

      Physical Review D

      Volume: 103 Pages: -

    • DOI

      10.1103/PhysRevD.103.023501

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Large-separation expansion of peak clustering in Gaussian random fields2021

    • Author(s)
      Matsubara Takahiko, Codis Sandrine
    • Journal Title

      Physical Review D

      Volume: 101 Pages: -

    • DOI

      10.1103/PhysRevD.101.063504

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Wide-angle redshift-space distortions at quasi-linear scales: cross-correlation functions from Zel'dovich approximation2020

    • Author(s)
      Taruya Atsushi, Saga Shohei, Yann Rasera, Michel-Andres Breton, Fujita Tomohiro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 491 Pages: 4162-4179

    • DOI

      10.1093/mnras/stz3272

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improving Geometric and Dynamical Constraints on Cosmology with Intrinsic Alignments of Galaxies2020

    • Author(s)
      Taruya Atsushi, Okumura Teppei
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 291 Pages: -

    • DOI

      10.3847/2041-8213/ab7934

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anisotropies of galaxy ellipticity correlations in real and redshift space: angular dependence in linear tidal alignment model2020

    • Author(s)
      Okumura Teppei, Taruya Atsushi
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 493 Pages: L124-L128

    • DOI

      10.1093/mnrasl/slaa024

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Phase-space structure of cold dark matter haloes inside splashback: multistream flows and self-similar solution2020

    • Author(s)
      Sugiura Hiromu, Nishimichi Takahiro, Rasera Yann, Taruya Atsushi
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 493 Pages: 2765-2781

    • DOI

      10.1093/mnras/staa413

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Testing tidal alignment models for anisotropic correlations of halo ellipticities with N-body simulations2020

    • Author(s)
      Okumura Teppei, Taruya Atsushi, Nishimichi Takahiro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 494 Pages: 694-702

    • DOI

      10.1093/mnras/staa718

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Fitting the Nonlinear Matter Bispectrum by the Halofit Approach2020

    • Author(s)
      Takahashi Ryuichi, Nishimichi Takahiro, Namikawa Toshiya, Taruya Atsushi, Kayo Issha, Osato Ken, Kobayashi Yosuke, Shirasaki Masato
    • Journal Title

      The Astrophysical Journal

      Volume: 895 Pages: -

    • DOI

      10.3847/1538-4357/ab908d

    • Peer Reviewed
  • [Journal Article] Modelling the asymmetry of the halo cross-correlation function with relativistic effects at quasi-linear scales2020

    • Author(s)
      Saga Shohei, Taruya Atsushi, Breton Michel-Andres, Rasera Yann
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 498 Pages: 981-1001

    • DOI

      10.1093/mnras/staa2232

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Power spectrum response of large-scale structure in 1D and in 3D: tests of prescriptions for post-collapse dynamics2020

    • Author(s)
      Halle Anaelle, Nishimichi Takahiro, Taruya Atsushi, Colombi Stephane, Bernardeau Francis
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 499 Pages: 1769-1787

    • DOI

      10.1093/mnras/staa2878

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] de Sitter duality and logarithmic decay of dark energy2020

    • Author(s)
      Kitamoto Hiroyuki, Kitazawa Yoshihisa, Matsubara Takahiko
    • Journal Title

      Physical Review D

      Volume: 101 Pages: -

    • DOI

      10.1103/PhysRevD.101.023504

    • Peer Reviewed
  • [Journal Article] Statistics of peaks of weakly non-Gaussian random fields: Effects of bispectrum in two- and three-dimensions2020

    • Author(s)
      Matsubara Takahiko
    • Journal Title

      Physical Review D

      Volume: 101 Pages: -

    • DOI

      10.1103/PhysRevD.101.043532

    • Peer Reviewed
  • [Journal Article] Large-scale inhomogeneity of dark energy produced in the ancestor vacuum2019

    • Author(s)
      Yue Nan, Kazuhiro Yamamoto, Hajime Aoki, Satoshi Iso, Daisuke Yamauchi
    • Journal Title

      Physical Review D

      Volume: 99 Pages: -

    • DOI

      10.1103/PhysRevD.99.103512

    • Peer Reviewed
  • [Journal Article] CMB constraints on the stochastic gravitational-wave background at Mpc scales2019

    • Author(s)
      Namikawa Toshiya, Saga Shohei, Yamauchi Daisuke, Taruya Atsushi
    • Journal Title

      Physical Review D

      Volume: 100 Pages: -

    • DOI

      10.1103/PhysRevD.100.021303

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Correlated magnetic noise from anisotropic lightning sources and the detection of stochastic gravitational waves2019

    • Author(s)
      Himemoto Yoshiaki, Taruya Atsushi
    • Journal Title

      Physical Review D

      Volume: 100 Pages: -

    • DOI

      10.1103/PhysRevD.100.082001

    • Peer Reviewed
  • [Journal Article] Velocity bias and the nonlinear perturbation theory of peaks2019

    • Author(s)
      Matsubara Takahiko
    • Journal Title

      Physical Review D

      Volume: 100 Pages: -

    • DOI

      10.1103/PhysRevD.100.083504

    • Peer Reviewed
  • [Journal Article] Intrinsic alignment statistics of density and velocity fields at large scales: Formulation, modeling, and baryon acoustic oscillation features2019

    • Author(s)
      Okumura Teppei, Taruya Atsushi, Nishimichi Takahiro
    • Journal Title

      Physical Review D

      Volume: 100 Pages: -

    • DOI

      10.1103/PhysRevD.100.103507

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Clustering of primordial black holes formed in a matter-dominated epoch2019

    • Author(s)
      Matsubara Takahiko, Kohri Kazunori, Yokoyama Shuichiro
    • Journal Title

      Physical Review D

      Volume: 100 Pages: -

    • DOI

      10.1103/PhysRevD.100.123544

    • Peer Reviewed
  • [Presentation] A new fitting formula of non-linear matter bispectrum in the Halofit approach2020

    • Author(s)
      高橋龍一
    • Organizer
      Cosmic Acceleration 2020
  • [Presentation] GridSPT: perturbation theory of large-scale structure on grids2020

    • Author(s)
      樽家篤史
    • Organizer
      第9回観測的宇宙論ワークショップ
    • Int'l Joint Research
  • [Presentation] Wide-angle redshift-space distortions at quasi-linear scales -- modeling relativistic diple2019

    • Author(s)
      樽家篤史
    • Organizer
      PTchat: Perturbative approaches to large-scale structure of the Universe
    • Int'l Joint Research / Invited
  • [Presentation] Higher-order corrections to the peak clustering2019

    • Author(s)
      松原隆彦
    • Organizer
      PTchat: Perturbative approaches to large-scale structure of the Universe
    • Int'l Joint Research / Invited
  • [Presentation] Probing dark matter from nonlinear structure formation of the Universe2019

    • Author(s)
      樽家篤史
    • Organizer
      YITP molecule-type workshop on "Resonant instabilities in cosmology and their observational consequences"
    • Int'l Joint Research / Invited
  • [Presentation] Modelling wide-angle cross-correlation function with relativistic effects at quasi-linear scales2019

    • Author(s)
      樽家篤史
    • Organizer
      CosKASI Conference 2019 on ``The Correlated Universe,''
    • Int'l Joint Research / Invited
  • [Presentation] GridSPT: grid-based calculation for perturbation theory of large-scale structure2019

    • Author(s)
      樽家篤史
    • Organizer
      MIAPP program on ``Dynamics of large-scale structure formation''
    • Int'l Joint Research / Invited
  • [Presentation] A fitting formula of non-linear matter bispectrum2019

    • Author(s)
      高橋龍一
    • Organizer
      天文学会秋季年会
  • [Presentation] Intrinsic alignment of density and velocity fields as cosmological probe2019

    • Author(s)
      樽家篤史
    • Organizer
      CosKASI-ICG-NAOC-YITP joint collaboration workshop 2019
    • Int'l Joint Research / Invited
  • [Presentation] Large-scale intrinsic alignments of cosmic density and velocity fields as cosmological probe2019

    • Author(s)
      樽家篤史
    • Organizer
      6th Korea-Japan workshop on dark energy
    • Int'l Joint Research / Invited
  • [Presentation] 宇宙の大規模構造の観測的相対論効果2019

    • Author(s)
      樽家篤史
    • Organizer
      第8回観測的宇宙論ワークショップ
  • [Presentation] 平成時代における宇宙論の変遷と新時代への期待:個人的視点から2019

    • Author(s)
      松原隆彦
    • Organizer
      第32回理論懇シンポジウム「天文学・宇宙物理学の変遷と新時代の幕開」
    • Invited
  • [Presentation] 宇宙における密度ゆらぎの進化と大規模構造2019

    • Author(s)
      松原隆彦
    • Organizer
      日本物理学会2020年秋季大会 シンポジウム「揺らぎと流体的発展からみる物理の面白さ」
    • Invited
  • [Book] 文系でもよくわかる 日常の不思議を物理学で知る2020

    • Author(s)
      松原隆彦
    • Total Pages
      200
    • Publisher
      山と溪谷社
    • ISBN
      9784635130127
  • [Book] なぜか宇宙はちょうどいい2020

    • Author(s)
      松原隆彦
    • Total Pages
      208
    • Publisher
      誠文堂新光社
    • ISBN
      9784416620380
  • [Book] 宇宙は無限か有限か2019

    • Author(s)
      松原隆彦
    • Total Pages
      256
    • Publisher
      光文社
    • ISBN
      9784334044459

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Published: 2021-12-27  

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