• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Hierarchical Structure Formation of The Universe

Research Project

Project/Area Number 11640235
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionNational Astronomical Observatory (2000-2001)
Kyoto University (1999)

Principal Investigator

SUGAI Naoshi  National Astronomical Observatory Divisiom of Theoretical Astrophysics, Professor, 理論天文学研究系, 教授 (70222057)

Co-Investigator(Kenkyū-buntansha) 山田 良透  京都大学, 理学研究科, 助手 (20230493)
西 亮一  京都大学, 理学研究科, 助手 (80252419)
中尾 憲一  大阪市立大学, 理学部, 助教授 (90263061)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1999: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsCOSOLOGY / LARGESCALESTRUCTRUE FORNATION / STRUCTURE FORMATION / REHATING / GALAXY FORMATION / 大規模構造 / 星形成 / ダークマター / *一般相対論
Research Abstract

We have investigated the hierarchical structure formation of the universe. Followings are the results we have obtained. 1. By employing so-called semi-analytic galaxy formation scenario, the process of reheating of the inter-galactic medium (IGM) has been studied. The resultant ionized medium produces temperature anisotropies and polarization on the cosmic microwave background radiation (CMB). It has been shown that the amplitude and angular distribution of the temperature anisotropies and the polarization reveals the process of the galaxy formation. 2. Taking the cross-correlation between the gravitational lensing effect which is induced by the gravitational field and the temperature fluctuations of CMB which traces the ionized medium, we have pointed out the possibility to reveal the relation between the structure formation by gravity and the galaxy formation. 3. We have set a very stringent constraint on the neutrino mass from the fact that the large scale structure formation is prevented by the existence of the massive neutrinos due to their streaming motion.4. We have invesitated the weak non-linear evolution of density and velocity perturbations during the recombination epoch. 5. We have studied the weak non-linear evolution of density and velocity fields in the matter-dominated universe. We have concentrated on the statistical nature of the velocity field. Moreover, we have compared our method with the direct numerical simulations, i.e., N-body simulations to test the validity of the method. 6. We have investigated the nature of the density perturbations induced by inflation of the early universe. The relation with the large scale structure formation has been studied too. 7. We have revealed the relation between the global topology of the universe and CMB temperature fluctuations, which are the seeds of the hierarchical structure of the universe.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Naoki Seto, Naoshi Sugiyama: "Numerical Analyses of Weakly Nonlinear Velocity-Density Coupling"Astrophysical Journal. 558. 505-514 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Guo-Chin Liu, Naoshi Sugiyama, A.Benson, C.G.Lacey, A.Nusser: "Polarization of the Cosmic Microwave Background from Nonuniform Reionization"Astrophysical Journal. 561. 504-516 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahiro Takada, Naoshi Sugiyama: "Numerical Analyses of Weakly Nonlinear Velocity-Density Coupling"Astrophysical Journal. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A.J.Benson, Adi Nusser, Naoshi Sugiyama, C.G.Lacey: "Non-uniform reionization by galaxies and its effect on the cosmic microwave background"Mon. Not. Roy. Astro.. 320. 153-176 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Guo-Chin Liu, K.Yamamoto, Naoshi Sugiyama, H.Nishioka: "Nonlinear Evolution of Very Small Scale Cosmological Baryon Perturbations at Recombination"Astrophysical Journal. 547. 1-11 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masataka Fukugita, Guo-Chin Liu, Naoshi Sugiyama: "Limits on Neutrino Mass from Cosmic Structure Formation"Physical Review Letter. 84. 1082-1085 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Kanazawa, M.Kawasaki, Naoshi Sugiyama, T.Yanagida: "Double Inflation in Supergravity and the Large Scale Structure"Physical Review D. 61. 023517(9) (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Taro Inue, Kenji Tomita, Naoshi Sugiyama: "TEMPERATURE CORRELATIONS IN A COMPACT HYPERBOLIC UNIVERSE"Mon. Not. Roy. Astro. Lett.. 314. L21-L25 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Kawasaki, K.Kohri, Naoshi Sugiyama: "MeV-scale Reheating Temperature and Thermalization of Neutrino Background"Physical Review D. 62. 023506(16) (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahiro Takada, Naoshi Sugiyama: "On the Cross-Correlation between Dark Matter Distribution and Secondary CMB Anisotropies by Ionized Inteigalactic Mediui"Astrophysical Journal. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Guo-Chin Liu, Naoshi Sugiyaina, Andrew J. Benson, C. G. Lacey, Adi Nusser: "Polarization of the Cosmic Microwave Background from Non-Uniform Reionization"561. 504-516 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Naoki Seto, Naoshi Sugiyama: "Numerical Analyses of Weakly Nonlinear Velocity-Density Coupling"Astrophysical Journal. 558. 505-514 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. J. Benson, Adi Nusser, Naoshi Sugiyama, C. G. Lacey: "Non-uniform reionization by galaxies and its effect on the cosmic microwave background"Mon. Not. Roy. Astro.. 320. 153-176 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Guo-Chin Liu, Kazuhiro Yamamoto, Naoshi Sugiyama, Hiroaki Nishioka: "Nonlinear Evolution of Very Small Scale Cosmological Baryon Perturbations at Recombination"Astrophysical Jouma. 547. 1-11 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Taro Inue, Kenji Tomita, Naoshi Sugiyama: "Temperature Correlations in a Compact Hyperbolic Universe"Mon. Not. Roy. Astro. Lett. 314. L21-L25 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Kawasaki, K. Kohri, Naoshi Sugiyama: "MeV-scale Reheating Temperature and Thermalization of Neutrino Background"Physical Review. D62. 023506(16) (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masataka Fukugita, Guo-Chin Liu, Naoshi Sugiyama: "Limits on Neutrino Mass from Cosmic Structure Formation"Physical Review Letter. 84. 1082-1085 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Toshiyuki Kanazawa, M. Kawasaki, Naoshi Sugiyama, T. Yanagida: "Double Inflation in Supergravity and the Large Scale Structure"Physical Review. D61. 023517(16) (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Naoki Seto, Naoshi Sugiyama: "Numerical Analyses of Weakly Nonlinear Velocity-Density Coupling"Astrophysical Journal. 558. 505-514 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Guo-Chin Liu, Naoshi Sugiyama, A.Benson, C.G.Lacey, A.Nusser: "Polarization of the Cosmic Microwave Background from Nonuniform Reionization"Astrophysical Journal. 561. 504-516 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Masahiro Takada, Naoshi Sugiyama: "Numerical Analyses of Weakly Nonlinear Velocity-Density Coupling"Astrophysical Journal. (in press).

    • Related Report
      2001 Annual Research Report
  • [Publications] A.J.Benson,Adi Nusser,Naoshi Sugiyama,C.G.Lacey: "Non-uniform reionization by galaxies and its effect on the cosmic microwave background"Mon.Not.Roy.Astro.. 320. 153-176 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Guo-Chin Liu,Kazuhiro Yamamoto,Naoshi Sugiyama,Hiroaki Nishioka: "Nonlinear Evolution of Very Small Scale Cosmological Baryon Perturbations at Recombination"Astrophys.J.. 547. 1-11 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Masataka Fukugita,Guo-Chin Liu,Naoshi Sugiyama: "Limits on Neutrino Mass from Cosmic Structure Formation"Physical Review Letter. 84. 1082-1085 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Toshiyuki Kanazawa,M.Kawasaki,Naoshi Sugiyama,T.Yanagida: "Double Inflation in Supergravity and the Large Scale Structure"Physical Review. D61. 023517(9pages) (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] R.Nishi,M.Tashiro: "Self-Regulation of Star Formation in Low-Metallicity Clouds"Astrophys.J.. 537. 50-54 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Taro Inoue,Kenji Tomita,Naoshi Sugiyama: "Temperature Correlations in a Compact Hyperbolic Universe"Mon.Not.Roy.Astro.Lett.. 314. L21-L25 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Kawasaki,K.Kehri,Naoshi Sugiyama: "MeV-Scale Reheating Temperature and Thermalization of Newtrino Background"Rhysical Review D. (掲載決定).

    • Related Report
      1999 Annual Research Report
  • [Publications] Taro Inoue,Kenji Tomita,Naoshi Sugiyama: "Temperature Comelations M a Compact Hyperbolic Universe"Monch.Notice of Royal Acer.Society Letter. (掲載決定).

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Fukugita,Guo-Chin Liu,Naoshi Sugiyama: "Limits on Newtrino Mass from Cosmic Stractune Formation"Rhysical Review Letter. 84. 1082-1085 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Toshiuki Kanazawa,M.Kawasaki,Naoshi Sugiyama,T.Yanagida: "Double Inflation in Supergravity and the Large Scale Structune"Rhysical Review. D61. 023517-023525 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Toshiuki Kanazawa,M.Kawasaki,Naoshi Sugiyama,T.Yanagida: "Observational Implications of Axionic Isocurvature Flucnicitions"Progress of Theoretical Physics. 102. 71-87 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Graca Rocha et al.: "Python I,II,and III CMB Anisotropy Measurment Constraints on Open and Flat A cosmogonies"Astrophysical Journal. 525. 1-9 (1999)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi