Observational Probes of Non-Gaussianity in the Primordial Fluctuations

• Project/Area Number: 22340056
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: SUGIYAMA Naoshi 名古屋大学, 大学院・理学研究科, 教授 (70222057)
• Co-Investigator(Kenkyū-buntansha): MATSUBARA Takahiko 名古屋大学, 大学院・理学研究科, 准教授 (00282715) ; ICHIKI Kiyotomo 名古屋大学, 基礎理論研究センター, 助教 (10534480)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000); Fiscal Year 2012: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2011: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2010: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
• Keywords: 宇宙論 / 構造形成 / 初期宇宙 / 密度揺らぎ / 宇宙マイクロ波背景放射温度揺らぎ / インフレーション

Research Abstract

We investigate statistical nature of fluctuations from the homogeneous isotropic Universe, such as temperature anisotropies of cosmic microwave background and large scale structure of the Universe, in particular, deviation from Gaussian distribution, i.e., non-Gaussianity. We study non-Gaussianity in temperature anisotropies caused by primordial magnetic fields and set a constraint from observations. We also study the influence of fluctuations with non-Gaussianity with curtosis on structure formation of the Universe.

Research Products

• [Journal Article] the origin of the fine structure in the CMB temperature angular power (2013)
  • Author(s): Kohei Kumazaki
  • Journal Title: Physical Review D Volume: 87 Issue: 2 Pages: 23-008
  • DOI: 10.1103/physrevd.87.023008
  • Peer Reviewed
• [Journal Article] Constraint on the primordial vector mode and its magnetic field generation from seven-year Wilkinson Microwave Anisotropy Probe observations (2012)
  • Author(s): K.Ichiki, K.Takahashi, N.Sugiyama
  • Journal Title: Physical Review D Volume: 85 Issue: 4 Pages: 43009-43009
  • DOI: 10.1103/physrevd.85.043009
  • Peer Reviewed
• [Journal Article] Ionized bubble number count as a probe of non-Gaussianity (2012)
  • Author(s): H.Tashiro, N.Sugiyama
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 420 Issue: 1 Pages: 441-446
  • DOI: 10.1111/j.1365-2966.2011.20049.x
  • Peer Reviewed
• [Journal Article] Application of cross correlations between CMB and large-scale structure to constraints on the primordial non-Gaussianity, (2012)
  • Author(s): 竹内良貴
  • Journal Title: Physical Review D Volume: 85-4 Issue: 4 Pages: 43518-43518
  • DOI: 10.1103/physrevd.85.043518
  • Peer Reviewed
• [Journal Article] Limits on second- order non- Gaussianity fromMinkowski functionals of WMAP 7-year data (2012)
  • Author(s): C. Hikage, T. Matsubara
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 425 Issue: 3 Pages: 2187-2196
  • DOI: 10.1111/j.1365-2966.2012.21572.x
  • Peer Reviewed
• [Journal Article] Deriving an accurate formula of scale- dependent bias with primordial non- Gaussianity: An application of the integrated perturbation theory (2012)
  • Author(s): T. Matsubara
  • Journal Title: Physical ReviewD Volume: 86 Issue: 6 Pages: 63518-63518
  • DOI: 10.1103/physrevd.86.063518
  • Peer Reviewed
• [Journal Article] Non-Gaussian Error Contribution to Likelihood Analysis of the Matter Power Spectrum (2011)
  • Author(s): R. Takahashi, N. Yoshida, M. Takada, T. Matsubara
  • Journal Title: The Astrophysical Journal Volume: 726 Issue: 1 Pages: 7-7
  • DOI: 10.1088/0004-637x/726/1/7
  • Peer Reviewed
• [Journal Article] Modification of the halo mass function by kurtosis associated with primordial non-Gaussianity (2011)
  • Author(s): S.Yokoyama, N.Sugiyama, S.Zaroubi, J.Silk
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 417 Issue: 2 Pages: 1074-1087
  • DOI: 10.1111/j.1365-2966.2011.19323.x
  • Peer Reviewed
• [Journal Article] Nonlinear biasing and redshift-space distortions in Lagrangian resummation theory and N-body simulations (2011)
  • Author(s): Masanori Sato
  • Journal Title: Physical Review D Volume: 84-043501 Issue: 4 Pages: 1-15
  • DOI: 10.1103/physrevd.84.043501
  • Peer Reviewed
• [Journal Article] Next-to-leading resummation of cosmological perturbations via the Lagrangian picture : 2-loop correction in real and redshift spaces (2011)
  • Author(s): T.Okamura, A.Taruya, T.Matsubara
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 8 Issue: 08 Pages: 76-76
  • DOI: 10.1088/1475-7516/2011/08/012
  • Peer Reviewed
• [Journal Article] Simulations of Wide-Field Weak Lensing Surveys. II.Covariance Matrix of Real Space Correlation Functions (2011)
  • Author(s): Masanori Sato
  • Journal Title: The Astrophysical Journal Volume: 734 Issue: 2 Pages: 76-87
  • DOI: 10.1088/0004-637x/734/2/76
  • Peer Reviewed
• [Journal Article] Nonlinear perturbation theory integrated with nonlocal bias, redshift-space distortions, and primordial non-Gaussianity (2011)
  • Author(s): T.Matsubara
  • Journal Title: Phys.Rev.D Volume: 83 Issue: 8 Pages: 83518-83518
  • DOI: 10.1103/physrevd.83.083518
  • Peer Reviewed
• [Journal Article] Computation approach for CMB bispectrum from primordial magnetic fields (2011)
  • Author(s): 白石希典
  • Journal Title: Physical Review D Volume: 83 Issue: 12 Pages: 123523-123523
  • DOI: 10.1103/physrevd.83.123523
  • Peer Reviewed
• [Journal Article] Cosmic microwave background bispectrum of tensor passive modes induced from primordial magnetic felds (2011)
  • Author(s): 白石希典
  • Journal Title: Physical Review D Volume: 83 Issue: 12 Pages: 123003-123003
  • DOI: 10.1103/physrevd.83.123003
  • Peer Reviewed
• [Journal Article] CMB Bispectrum from Primordial Scalar, Vector and Tensor non-Gaussianities (2011)
  • Author(s): M. Shiraishi, D. Nitta, S. Yokoyama, K. Ichiki, K. Takahashi
  • Journal Title: Progress of Theoretical Physics Volume: 125 Pages: 795-813
  • NAID: 210000112368
  • URL: http://ptp.ipap.jp/link?PTP/125/795/
  • Peer Reviewed
• [Journal Article] Non-Gaussian Error Contribution to Likelihood Analysis of the Matter Power Spectrum (2011)
  • Author(s): R.Takahashi, N.Yoshida, M.Takada, T.Matsubara, N.Sugiyama, 他
  • Journal Title: The Astrophysical Journal Volume: 726
• [Journal Article] Constraints on primordial non-Gaussianity from galaxy-CMB lensing cross correlation (2010)
  • Author(s): Y. Takeuchi, K. Ichiki, T. Matsubara
  • Journal Title: Physical Review D Volume: 82 Issue: 2 Pages: 23517-23517
  • DOI: 10.1103/physrevd.82.023517
  • Peer Reviewed
• [Journal Article] Analytic formulae of the CMB bispectra generated from non-Gaussianity in the tensor and vector perturbations (2010)
  • Author(s): 白石希典
  • Journal Title: Physical Review D Volume: 82 Issue: 10
  • DOI: 10.1103/physrevd.82.103505
  • Peer Reviewed
• [Journal Article] Analytic Minkowski functionals of the cosmic microwave background : Second-order non-Gaussianity with bispectrum and trispectrum (2010)
  • Author(s): T. Matsubara
  • Journal Title: Phys. Rev Volume: 81 Issue: 8 Pages: 83505-83505
  • DOI: 10.1103/physrevd.81.083505
  • Peer Reviewed
• [Journal Article] Constraints on primordial non-Gaussianity from galaxy-CMB lensing cross correlation (2010)
  • Author(s): Y.Takeuchi, K.Ichiki, T.Matsubara
  • Journal Title: Physical Review D Volume: 82
• [Journal Article] Analytic formulae of the CMB bispectra generated from non-Gaussianity in the tensor and vector perturbations (2010)
  • Author(s): M.Shiraishi, S.Yokoyama, D.Nitta, K.Ichiki, K.Takahashi
  • Journal Title: Physical Review D Volume: 82
• [Journal Article] Analytic formulae of the CMB bispectra generated from non-Gaussianity in the tensor and vector nerturbations (2010)
  • Author(s): M.Shiraishi, S.Yokoyama, D.Nitta, K.Ichiki, K.Takahashi
  • Journal Title: Physical Review D Volume: 82
• [Journal Article] Analytic Minkowski Functionals of the Cosmic Microwave Background : Second-order Non-Gaussianity with Bispectrum and Trispectrum (2010)
  • Author(s): T. Matsubara
  • Journal Title: Physical Review D Volume: 81
• [Presentation] CMBによる観測的宇宙論 (2012)
  • Author(s): 杉山直
  • Organizer: 測的宇宙論ワークショップ(招待講演)
  • Place of Presentation: 東京大学本郷キャンパス
• [Presentation] 宇宙の大規模構造による観測的宇宙論 (2012)
  • Author(s): 松原隆彦
  • Organizer: 測的宇宙論ワークショップ(招待講演)
  • Place of Presentation: 東京大学本郷キャンパス
• [Presentation] 独立成分分析を用いたPLANCK CMBデータからのCO成分の除去 (2012)
  • Author(s): 市來淨與
  • Place of Presentation: 東京大学本郷キャンパス
• [Presentation] Deriving the scale- dependent bias fromthe integrated perturbation theory (2012)
  • Author(s): 松原隆彦
  • Organizer: Workshop on Large Scale Structure (招待講演)
  • Place of Presentation: The Abdus SalamInternational Centre for Theoretical Physics, Trieste, Italy
• [Presentation] CO component estimation based on the independent component analysis (2012)
  • Author(s): 市來淨與
  • Organizer: International Workshop on CMB ``Cosmic Microwave Background Radiation and Its Foreground Interstellar Components II"(招待講演)
  • Place of Presentation: Kyoto, Japan
• [Presentation] Deriving the scale-dependent bias from the integrated perturbation theory (2012)
  • Author(s): Takahiko Matsubara
  • Organizer: Workshop on Large Scale Structure
  • Place of Presentation: The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy
  • Invited
• [Presentation] CO component estimation based on the independent component analysis (2012)
  • Author(s): Kiyotomo Ichiki
  • Organizer: International Workshop on CMB ``Cosmic Microwave Background Radiation and Its Foreground Interstellar Components II"
  • Place of Presentation: Kyoto, Japan
  • Invited
• [Presentation] CMBによる観測的宇宙論 (2012)
  • Author(s): 杉山直
  • Organizer: 観測的宇宙論ワークショップ
  • Place of Presentation: 東京大学本郷キャンパス
  • Invited
• [Presentation] 独立成分分析を用いたPLANCK CMBデータからのCO成分の除去 (2012)
  • Author(s): 市來 淨與
  • Organizer: 観測的宇宙論ワークショップ
  • Place of Presentation: 東京大学本郷キャンパス
  • Invited
• [Presentation] 宇宙の大規模構造による観測的宇宙論 (2012)
  • Author(s): 松原隆彦
  • Organizer: 観測的宇宙論ワークショップ
  • Place of Presentation: 東京大学本郷キャンパス
  • Invited
• [Presentation] Cosmic Microwave Background: Ultimate Tool for Cosmology (2011)
  • Author(s): 杉山直
  • Organizer: Xth International Conference on Gravitation, Astrophysics and Cosmology
  • Place of Presentation: Quy-Nhon, Vietnam
  • Year and Date: 2011-12-18
• [Presentation] Cosmic Microwave Background : Ultimate Tool for Cosmology (2011)
  • Author(s): 杉山直
  • Organizer: Xth International Conference on Gravitation, Astrophysics and Cosmology
  • Place of Presentation: Quy-Nhon, Vietnam(招待講演)
  • Year and Date: 2011-12-18
• [Presentation] Integration of nonlocal bias, redshift-space distortions, primordial non-Gaussianity with the nonlinear perturbation theory (2011)
  • Author(s): 松原隆彦
  • Organizer: a DENET/IAP Conference "The Accelerating Universe"(招待講演)
  • Place of Presentation: Institut d'Astrophsique de Paris, France
  • Year and Date: 2011-10-26
• [Presentation] Integration of nonlocal bias, redshift-space distortions, primordial non-Gaussianity with the nonlinear perturbation theory (2011)
  • Author(s): 松原隆彦
  • Organizer: a DENET/IAP Conference "The Accelerating Universe"
  • Place of Presentation: Institut d'Astrophsique de Paris, France(招待講演)
  • Year and Date: 2011-10-26
• [Presentation] Integrated perturbation theory: nonlocal bias, redshift-space distortions, primordial non-Gaussianity, and resummations (2011)
  • Author(s): 松原隆彦
  • Organizer: PTchat 2011 workshop(招待講演)
  • Place of Presentation: Institut de Physique Theorique CEA, IPhT, France
  • Year and Date: 2011-09-21
• [Presentation] Integrated perturbation theory : nonlocal bias, redshift-space distortions, primordial non-Gaussianity, and resummations (2011)
  • Author(s): 松原隆彦
  • Organizer: PTchat 2011 workshop
  • Place of Presentation: Institut de Physique Theorique CEA, IPhT, France(招待講演)
  • Year and Date: 2011-09-21
• [Presentation] 初期ベクトル型揺らぎおよび原始磁場生成へのWMAP7-yrデータを用いた制限 (2011)
  • Author(s): 市來淨與
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-11
• [Presentation] Effect of Kurtosis-type of Primordial Non-Gaussianity on Halo Mass Function (2011)
  • Author(s): 杉山直
  • Organizer: Cosmological Non-Gaussianity: Observations Confront Theory Workshop(招待講演)
  • Place of Presentation: University of Michigan, Ann Arbor, Michigan, USA
  • Year and Date: 2011-05-15
• [Presentation] Effect of Kurtosis-type of Primordial Non-Gaussianity on Halo Mass Function (2011)
  • Author(s): 杉山直
  • Organizer: Cosmological Non-Gaussianity : Observations Confront Theory Workshop
  • Place of Presentation: University of Michigan, Ann Arbor, Michigan, USA(招待講演)
  • Year and Date: 2011-05-15
• [Presentation] ビッグバン宇宙論 (2010)
  • Author(s): 杉山直
  • Organizer: 第23回理論懇シンポジウム
  • Place of Presentation: 京都大学
  • Year and Date: 2010-12-21
• [Presentation] Weak Lensing and Massive Neutrionos (2010)
  • Author(s): 市來淨與
  • Organizer: APCTP-Topical Research-Program 2010, From Quarks to the Cosmos
  • Place of Presentation: APCTP Office, Seoul, Korea
  • Year and Date: 2010-12-15
• [Presentation] CMB 理論(overview) (2010)
  • Author(s): 杉山直
  • Organizer: CMB Workshop 2010
  • Place of Presentation: 国立天文台
  • Year and Date: 2010-06-07
• [Presentation] CMB理論(overview) (2010)
  • Author(s): 杉山直
  • Organizer: CMB Workshop 2010
  • Place of Presentation: 国立天文台
  • Year and Date: 2010-06-07
• [Presentation] Geometrical analysis of the primordial non-Gaussianity in the CMB (2010)
  • Author(s): 松原隆彦
  • Organizer: IEU workshop "Cosmology and Fundamental Physics"
  • Place of Presentation: IEU, Ewha Womans Univ., Seoul, Korea
  • Year and Date: 2010-05-19
• [Presentation] Geometrical analysis of the primordial non-Gaussianity in the CMB (2010)
  • Author(s): 松原隆彦
  • Organizer: IEU workshop "Cosmology and Fundamental Physics"
  • Place of Presentation: IEU, Ewha Womans Univ.,Seoul, Korea
  • Year and Date: 2010-05-19
• [Book] 宇宙のしくみ (2010)
  • Author(s): 杉山直他
  • Total Pages: 199
  • Publisher: 学研
• [Book] 現代宇宙論-時空と物質の共進化 (2010)
  • Author(s): 松原隆彦
  • Total Pages: 388
  • Publisher: 東京大学出版会
• [Book] 宇宙のしくみ (2010)
  • Author(s): 杉山直, 他(IPMU監修)
  • Total Pages: 199
  • Publisher: 学研
• [Book] 現代宇宙論 -時空と物質の共進化 (2010)
  • Author(s): 松原隆彦
  • Total Pages: 388
  • Publisher: 東京大学出版会