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Heating of the Solar Corona Due to Self-focusing Effect of Alfven Wave

Research Project

Project/Area Number 61580006
Research Category

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

Allocation TypeSingle-year Grants
Research Field プラズマ理工学
Research InstitutionResearch Institute of Atmospherics, Nagoya University

Principal Investigator

WASHIMI Haruichi  Res. Inst. Atmospherics, Nagoya Univ., Associate Prof., 空電研究所, 助教授 (60023686)

Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsAlfven Wave / Nonlinear Wave / Self-Focusing / Solar Corona / Heating / 加熱 / 加速
Research Abstract

This project was performed to study the heating mechanism of the solar corona due to self-focusing effect of Alfven waves.
A new method of perturbation for the study of nonlinear wave propagation in a dielectric medium such as a magnetoplasma was proposed. By this method the wave equations which include the effects due to nonlinearity of the Alfven waves propagating along magnetic field lines were derived and summarized. Ampong many kinds of wave modulations described by these equations, the conditions for self-focusing and self-trapping in the solar corona were specially discussed in detail. It was found that the threshold power for the self-focusing of Alfven waves in the corona is rather low, which means that a filamentary structure is a common phenomenon in the corona. Thus it was shown by this project that kinetic Alfven wave can propagate in the filametary corona which heats the corona through wave-damping.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 鷲見治一: Geophysical Research Letters. 13. 897-900 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 鷲見治一: Geophysical Research Letters. 14. 487-490 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 鷲見治一: Proc.XIXth General Assembly of International Union of Geodesy and Geophysics (IUGG),Vancouver,Canada. 19. 647 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 鷲見治一: Proc.VIth International Solar Wind Conference,Estes Park,USA. 6. 107 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 鷲見治一: Proc.Research Institute of Atmospherics,Nagoya Univ.35. 39-56 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 鷲見治一: Publications Astronomical Society of Japan. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Haruichi Washimi: "Two-Dimensional Structure of the Solar Wind near the Sun" Geophysical Research Letters. 14. 487-490 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Haruichi Washimi: "Computer Analysis of a Two-Dimensional Quasi-Steady Structure of the Solar Wind" Proc. XIXth General Assembly of International Union of Geodesy and Geophysics. 19. 647 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Haruichi Washimi: "Numerical Analysis of Coronal Mass Ejections and Interplanetary Shock Waves" Proc. VIth International Solar Wind Conf.6. 107 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Haruichi Washimi: "Theory of Wave-Trapping in Space Plasmas" Proc. Res. Inst. Atmospheric, Nagoya Univ.35. 39-56 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Haruichi Washimi: "Acceleration of Electrons in Solar Flares due to a Magnetic-Mirroring Effect" Publ. Astron. Soc. Japan. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 鷲見治一: Geophysical Research Letters. 13. 897-900 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 鷲見治一: Proc.Symposium on Qualitative Modeling of Magnetoshere Ionosphere Coupling Processes. 262-267 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 鷲見治一: Geophysical Research Letters.

    • Related Report
      1986 Annual Research Report
  • [Publications] 鷲見治一: Astrophysical Journal.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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