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1996 Fiscal Year Final Research Report Summary

Structure Formation and Thormel History in the expanding Universe

Research Project

Project/Area Number 06452021
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SATO Humitaka  Kyoto University Physics Professor, 大学院・理学研究科, 教授 (90025370)

Co-Investigator(Kenkyū-buntansha) SASAKI Misao  Osaka University, Professor, 宇宙地球科学科, 教授 (70162386)
NAKAO Ken-ichi  Kyoto University Physics Instructor, 大学院・理学研究科, 助手 (90263061)
NISHI Ryoichi  Kyoto University Physics Insturctor, 大学院・理学研究科, 助手 (80252419)
YAMADA Yoshiyuki  Kyoto University Physics Insturctor, 大学院・理学研究科, 助手 (20230493)
Project Period (FY) 1994 – 1996
Keywordsgalaxy formation / star formation / large scale structure / molecular hydrogen / nadiative transfer / rumerical hydrodynamics / Early Unirarse
Research Abstract

The theory of structure formation in the expanding Universe is getting the unified knowledge of cosmological microwave background, large scale distribution of galaxies, morphology of galaxies which we know from deap servey observation, element abundance within stars. For this reason, we cralify all physical processes from very early perturbations to star mass object formation. Previously, we treated separately the problem ob initial growth of perturbation which is related to large scale strucure and star formation which is treated as a part of the galaxy evolution. We treat these proberm together.
The largest sturcture in the Universe, the scale of the cluster of galaxies, has very high temperature as we know from X ray observation. On the other hand, the structure less massive than a galaxy, we must consider non equilibrium processes which is induced by the shock wave heating and leads the formation of molecular hydrogen. We treat problems of non spherical symmetric gravitational contraction, shock wave heating, formation of molecular hydrogen, cooling by molecular hydrogen, radiative transfer, frag-mentation and etc.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 山本一博: "Quantum Fluctuations and CMB Anisotropies in One-Bubble Open Inflation Models" Phys. Rev.D54. 5031-5048 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Ganga: "Tentative Appraisal of Compatibility of Small-Scale CMB Anisotropy Detections in the Context of COBE-DMR-Normalized Open and Flat-Lambda CDM Cosmogonies" Astrophys. J. Letter. 461. L61-L64 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] W. Hu: "Small Scale Cosmological Perturbations : an Analytic Approach" Astrophys. J.471. 542-550 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 菅谷 幸利: "Microlensing and Halo Models of the Galaxy" Publ. Astron. Soc. Japan. 48. 479-487 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 上原 英也: "Fragmentation of the Primordial Gas Clouds and the Lower Limit on the Mass of the First Stars" Astrophys. J. Lett.473. L95-L98 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中村 卓史: "The Minimum Total Mass of MACHOs and Halo Models of the Galaxy" Astrophys. J. Lett.473. L99-L102 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kazuhiro Yamamoto: "Quantum Fluctuations and CMB Anisotropies in One-Bubble Open Inflation Models" Phys.Rev.D54. 5031-5048 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ganga: "Tentative Appraisal of Compatibility of Small-Scale CMB Anisotropy Detrctions in the Context of COBE-DMR-Normalized Open and Flat-Lambda CDM Cosmogonies" Astrophys, J.Letter. 461. L61-L64 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] W.Hu: "Small Scale Cosmological Perturbations : an Analytic Approach" Astrophys.J.471. 542-550 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yukitoshi Kanda: "Microlensing and Halo Models of the Galaxy" Publ.Astron.Soc.Japan. 48. 479-487 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideya Uehara: "Fragmentation of the Primordial Gas Clouds and the Lower Limit on the Mass of the First Stars" Astrophys.J.Lett.473. L95-L98 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Nakamura: "The Minimum Total Mass of MACHOs and Halo Models of the Galaxy" Astrophys.J.Lett.473. L99-L102 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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