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Nonlinear growth of density fluctuations in the 3-dimensional self-gravitating systems

Research Project

Project/Area Number 62460039
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionKyoto University

Principal Investigator

SATO Humitaka  Kyoto Univ. Faculty Professor of Science, 理学部, 教授 (90025370)

Co-Investigator(Kenkyū-buntansha) NAKANO Takenori  Kyoto Univ. Faculty Associate of Science Professor, 理学部, 助教授 (30027346)
GOUDA Naoteru  Observatory Kyoto Univ. Faculty Assistant of Science, 理学部, 助手 (50202073)
MIYAMA Shoken  National Theoretical Associate Astrophys. Astrophys. Professor, 理論天文学系, 助教授 (00166191)
ISHIHARA Hideki  Kyoto Univ. Faculty Assistant of Science, 理学部, 助手 (80183739)
中村 卓史  京都大学, 理学部, 講師 (80155837)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1987: ¥5,000,000 (Direct Cost: ¥5,000,000)
Keywordsdensity fluctuation / galaxy formation / instability / general relativity / gramitational wave / pulsar / supnernova / nonlinear system / インフレーション宇宙 / 重力不安定 / 非線型過程 / 宇宙の大局構造 / 星形成 / 自己重力系 / 超新星爆発 / 中性子星
Research Abstract

Structure formations in the hierarchy of the universe are all related with the nonlinear growth of density fluctuations in the 3-dimensional self-gravitating system. In this research project, the characteristics of gravity in the structure formation was studied numerically as well as analytically. The subject is classified to the following three:
1. Cloud and Stars Stability and fragmentation of an isothermal cloud was analyzed extensively by the 3-dimensional simulation code and the linear theory. Angular momentum transportation in the toras was analyzed by the quasi-nonlinear method. Effect of magnetic field in the evolution of cloud was systematically analyzed.
2. Collapse and Supernova The code to compute the 3-dimensional gravitational collapse has been developed. Gravitational waves emission in the process of nertron stars coalescence was firstly computed by the post Newtonian approximation and the wave form was extensively studied. Supernova explosion was firstly computed by the 3-dimensional code and suggested the formation of clumpiness in the ejects. Propagation of X and gamma ray in the supernova ejecta was also studied.
3. Cosmology Dynamical feature of 1-dimensional sheetlike self-gravitating system was studied in relation to the catastrophy theory. Various problems of cosmology were also studied.

Report

(4 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (54 results)

All Other

All Publications (54 results)

  • [Publications] H.Kubotani: "The Surface Wave Instability of Stratifie k Incommpressible Cylinders with Differential Rotation" Prog.Theor.Phys.82. 523-534 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Y.Kojima: "Effects of entropy distributions on non-axisymmetric unstable modes in differentially rotating tori and cylinders" Mon.Not.R.astr.Soc.238. 753-768 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.Nakano: "Conditions for the Formation of Massive Stars through Nonspherical Accretion^*" Astrophysical Journal. 345. 464-471 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.Nakano: "Magnetic braking of the rotation of molecular could cores^*" Mon.Not.R.astr.Soc. 241. 495-505 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Honda: "Acceleration of Cosmic Rays by the Collision of Supernova Ejecta with the Circumstellar Matter Cloud" Prog.Theor.Phys.82. 315-321 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Gouda: "Non-Linear Growth of One-Dimensional Cosmological Density Fluctuation and Catastrophe Theory" Prog.Theor.Phys.81. 633-647 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Gouda: "Non-Linear Growth of Density Fluctuations in the Spherically Symmetric Expanding Unvierse and Catastrophe Theory" Prog.Theor.Phys.81. 648-661 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Gouda: "Evolution of Perturbations in a Baryon-Dominated Universe;Gauge-Invariatn Analysis" Astrophys.J.341. 557-574 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.Nakano: "Contraction of rotating magnetized clouds" Mon.Not.R.astr.Soc.(in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] S.Tadaki: "Cosmological Domain Walls Coupled to Gravity" Phys.Rev.D(in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Y.Suto: "Microwave Background Anisotropies and the Primordial Spectrum of Cosmological Density Fluctuations" Astrophys.J.(in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] H.Ishihara: "Quantum Bounce of an Uniform Dust Star in Newton Gravity" Int.J.Mod.Phys.(Submitted).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] H.Kubotani: "The Surface Wave Instability of Stratified Incommpressible Cylinders with Differential Rotations" Prog.Theor.Phys.82(1989)523-534.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Y.Kojima: "Effects of entropy distributions on non-axisymmetric unstable mode in differentially rotating tori and cylinders" Mon.Not.R.astr.Soc.238(1989)753-768.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.Nakano: "Conditions for the Formation of Massive Stars through Nonspherical Accretion" Astrophys.J.345(1989)464-471.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.Nakano: "Magnetic braking of the rotation of molecularc cloud cores" Mon.Not.R.astr.Soc.241(1989)241(1989)495-505.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Honda: "Acceleration of Cosmic Rays by the Collision of Supernova Ejecta with the Circumstellar Matter Cloud" Prog.Theor.Phys.82(1989)315-321.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Gouda: "Non-Linear Growth of One-Dimensional Cosmological Density Fluctuation and Catastrophe Theory" Prog.Theor.Phys.81(1989)633-647.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Gouda: "Non-Linear Growth of Density Fluctuations in the Spherically Symmetric Expanding Universe and Catastrophe Theory" Prog.Theor.Phys.81(1989)648-661.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] N.Gouda: "Evolution of Perturbations in a Baryon-Dominated Universe:Gauge-Invariant Analysis" Astrophys.J.341(1989)557-574.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.Nakano: "Contraction of rotating magnetized clouds" Mon.Not.R.astr.Soc.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] S.Tadaki: "Cosmological Domain Walls Coupled to Gravity" Phys.Rev.D.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Y.Suto: "Cosmological Domain Walls Coupled to Gravity" Astrophys.J.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] H.Ishihara: "Quantum Bounce of an Uniform Dust Star in Newton Gravity" Int.J.Mod.Phys.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] H.Kubotani: "The Surface Wave Instability of Stratifie k Incommpressible Cylinders with Differential Rotation" Prog.Theor.Phys.82. 523-534 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Y.Kojima: "Effects of entropy distributions on non-axisymmetric unstable modes in differentially rotating tori and cylinders" Mon.Not.R.astr.Soc.238. 753-768 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] T.Nakano: "Conditions for the Formation of Massive Stars through Nonspherical Accretion*" Astrophysical Journal. 345. 464-471 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] T.Nakano: "Magnetic braking of the rotation of molecular could cores*" Mon.Not.R.astr.Soc.241. 495-505 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Honda: "Acceleration of Cosmic Rays by the Collision of Supernova Ejecta with the Circumstellar Matter Cloud" Prog.Theor.Phys.82. 315-321 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] N.Gouda: "Non-Linear Growth of One-Dimensional Cosmological Density Fluctuation and Catastrophe Theory" Prog.Theor.Phys.81. 633-647 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] N.Gouda: "Non-Linear Growth of Density Fluctuations in the Spherically Symmetric Expanding Unvierse and Catastrophe Theory" Prog.Theor.Phys.81. 648-661 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] N.Gouda: "Evolution of Perturbations in a Baryon-Dominated Universe;Gauge-Invariatn Analysis" Astrophys.J.341. 557-574 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] T.Nakano: "Contraction of rotating magnetized clouds" Mon.Not.R.astr.Soc.

    • Related Report
      1989 Annual Research Report
  • [Publications] S.Tadaki: "Cosmological Domain Walls Coupled to Gravity" Phys.Rev.D.

    • Related Report
      1989 Annual Research Report
  • [Publications] Y.Suto: "Microwave Background Anisotropies and the Primordial Spectrum of Cosmological Density Fluctuations" Astrophys.J.

    • Related Report
      1989 Annual Research Report
  • [Publications] H.Ishihara: "Quantum Bounce of an Uniform Dust Star in Newton Gravity" Int.J.Mod.Phys.

    • Related Report
      1989 Annual Research Report
  • [Publications] H.Sato: Prog.Theor.Phys.80. 96-107 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Nakano: Mon.Not.Rastr.Soc.235. 193-201 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Nakano: Publ.Astron Soc.Japan. 40. 593-604 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Nakano: Astroophys.J.

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Sekiya: Mon.Not.R.astr.Soc.234. 107-114 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Nagasawa: Publ.Astron.Soc.Japan. 40. 691-708 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] S.M.Miyama: Astrophys.J.

    • Related Report
      1988 Annual Research Report
  • [Publications] Y.Kojima: Mon.Not.R.astr.Soc.

    • Related Report
      1988 Annual Research Report
  • [Publications] V.Belinsky: Prog.Theor.Phys.79. 676-684 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] H.Ishihara: Phys.Lett.

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Yamada: Prog.Theor.Phys.79. 416-428 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Y.Yamada: Prog.Theor.Phys.81. 93-103 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] G.Marx et al.: Inter.J.Modern Phys.2. 133-163 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] H.Sato: Modern Phys.Lett.2. 801-804 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] T.Nakamura et al.: Prog.Theor.Phys.78. 1065-1080 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] M.Izawa et al.: Prog.Theor.Phys.78. 1219-1224 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] H.Sato: Asia-Pacific Physics News. 2. 3-5 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Y.Yamada et al.: Prog.Thero.Phys.79. 416-428 (1988)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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