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

Theoretical Study of Magnetohydrodynamic Phenomena in Active Celestial Objects

Research Project

Project/Area Number 03302013
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionNational Astronomical Observatory

Principal Investigator

SHIBATA Kazunari  NAO, Solar Physics Assoc. Professor, 太陽物理学研究系, 助教授 (70144178)

Co-Investigator(Kenkyū-buntansha) SATO Tetsuya  NIFS, Theory Professor, 教授 (80025395)
SAWA Takeyasu  Aichi U. of Edu. Assoc. Professor, 教育学部, 助教授 (90111864)
MATSUMOTO Ryoji  Chiba U. Assoc. Professor, 教養部, 助教授 (00209660)
UCHIDA Yutaka  Tokyo U., Astron. Professor, 理学部, 教授 (90012814)
HANAWA Tomoyuki  Nagoya U., Phys. Research Assoc., 理学部, 助手 (50172953)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1992: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1991: ¥4,000,000 (Direct Cost: ¥4,000,000)
Keywordsactive objects / magnetic field / hydrodynamics / magnetic reconnection / MHD shock / accretion / jet / dynamo / アクリ-ション
Research Abstract

The purposes of this project are to organize cooperative research on various magnetohydrodynamic phenomena (reconnection, dynamo, MHD turbulence, MHD wave, jet, accretion, etc.) observed in many active celestial objects, and to encourage active communication between researchers, who are studying similar physical processes, in different fields (e.g., astronomy, nuclear fusion, plasma physics, geophysics, fluid mechanics).
In order to accomplish these objectives, we held a symposium on cosmic MHD phenomena at Atami in September, 1992. More than 60 people attended. We discussed not only theoretical research results but also observational results in relation to various cosmical plasmas ranging from fusion plasmas to intergalactic plasmas. Specific items we discussed are; dynamo processes in fusion plasmas, convection and dynamo in terrestrial and planetary cores, vortex reconnection, magnetic reconnection and Kelvin-Helmholtz instability in terrestrial magnetosphere, acceleration and dynami … More cs of solar wind, magnetohydrodynamic phenomena in the Sun (especially on magnetic reconnection and dynamic phenomena in the solar corona observed by YOHKOH), jet formation in black hole magnetosphere, magnetic field in star forming regions, MHD phenomena in interstellar space, intergalactic magnetic fields, etc.
Major results obtained by these researches are summarized in the following;
(1) We compared magnetic reconnections occurring in the tail of terrestrial magnetosphere and in the solar corona, and found that the formation and acceleration of plasmaids play a key role in both cases. This has also been confirmed by 2D and 3D MHD numerical simulations of magnetic reconnection for both terrestrial and solar cases.
(2) Various dynamic phenomena (loops, jets, spincules) similar to solar coronal dynamic phenomena have been discovered in disk galaxies from detailed comparison between solar coronal images taken by YOHKOH and high resolution optical images of disk galaxies. Numerical simulations have also been done for the Parker instability both in disk galaxies and in the Sun, which explains the formation of magnetic loops in disk galaxies and the Sun. Less

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (81 results)

All Other

All Publications (81 results)

  • [Publications] K.Shibata et al.: "Magnetic Reconnection Associated with Emerging Magnetic Flux" Publ.Astron.Soc.Japan. 44. 265-272 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.Uchida et al.: "A Magnetohydrodynamic Model for Hervig-Haro Objects:Magnetically Guided Shocked Flows Associated with Optical Jets from Young Stellar Objects" Publ.Astron.Soc.Japan. 44. 227-243 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] R.Matsumoto et al.: "Three-Dimensional MHD Simulation of the Parker Instability in Galactic Gas Disks and the Solar Atmosphere" Publ.Astron.Soc.Japan. 44. 167-175 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Hanawa et al.: "Giant Molecular Cloud Formation Through the Parker Instability in a Skewed Magnetic Field" The Astrophysical Journal. 393. L71-L74 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.Ugai: "Computer Studies on Development of the Fast Reconnection Mechanism for Different Resistivity Models" Physics of Fluids B. 4. 2953-2963 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Washimi et al.: "A Simulation Study of the Solar Wind Including the Solar Rotation Effect" Solar Physics.143. 173-186 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K. Shibata et al.: "Magnetic Reconnection Associated with Emerging Magnetic Flux" Publ. Astron Soc. Japan. 44. 265-272 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y. Uchida et al.: "A Magnetohydrodynamic Model for Herbig-Haro Objects: Magnetically Guided Shocked Flows Associated with Optical Jets From Young Stellar Objects" Publ. Astron. Soc. Japan. 44. 227-243 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] R. Matsumoto et al.: "Three-Dimensional MHD Simulation of the Parker Instability in Galactic Gas Disks and the Solar Atmosphere" Publ. Astron Soc. Japan. 44. 167-175 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Hanawa et al.: "Giant Molecular Cloud Formation Through the Parker Instability in a Skewed Magnetic Field" The Astrophysical Journal. 393. L71-L74 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M. Ugai: "Computer Studies on Development of the Fast Reconnection Mechanism for Different Resistibity Models" Physics of Fluids B. 4. 2953-2963 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Washimi et al.: "A Simulation Study of the Solar Wind Including the Solar Rotation Effect" Solar Physics. 143. 173-186 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K.Shibata et al.: "Magnetic Reconnection Associated with Emerging Magnetic Flux" Publ.Astron.Soc.Japan. 44. 265-272 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Uchida et al.: "A Magnetohydrodynamic Model for Herbig-Haro Objects:Magnetically Guided Shocked Flows Associated with Optical Jets from Young Stellar Objicts" Publ.Astron.Soc.Japan. 44. 227-243 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] R.Matsumoto et al.: "Three-Dimensional MHD Simulation of the Parker Instability in Galactic Gas Disks and the Solar Atmosphere" Publ.Astron.Soc.Japan. 44. 167-175 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Hanawa et al.: "Giant Molecular Cloud Formation Through the Parker Instability in a Skewed Magnetic Fieid" The Astrophysical Journal. 393. L71-L74 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Ugai: "Computer Studies on Development of the Fast Reconnection Mechanism for Different Resistivity Models" Physics of Fluids B. 4. 2953-2963 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Washimi et al.: "A Simulation Study of the Solar Wind Including the Solar Rotation Effect" Solar Physics.143. 173-186 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Sterling,A.C.: "Numerical Simulations of Microflare Evolution in the Solar Transition Region and Corona" Astrophys.J.381. 313-322 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shibata,k.: "Formation of Giant Molecular Clouds and Helical Magnetic Fields by the Parker Instability" Nature. 353. 633-635 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nozawa,S.: "Emergence of Magnetic Flux from the Convection Zone into the Solar Atmosphere,I.Linear and Nonlinear Adiabatic Evolution of th ConvectiveーParker Instability" Astrophys.J.Suppl.78. 267-282 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Tajima,T.: "On the Origin Cosmological Magnetic Fields" Astrophys.J.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shibata,K.: "Magnetic Reconnection Associated with Emerging Magnetic Flux" Publ.Astr.Soc.Japan. 44. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsumoto,R.: "Three Dimensional Simulation of the Parker Instability" Publ.Astr.Soc.Japan. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hanawa,T.: "ParkerーJeans Instability of Magnetized Gaseous Disks," Publ.Astron.Soc.Japan. 43No.5. 685-702 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hanawa,T.: "ParkerーJeans Instability of the Galactic Gaseous Disk" Publ.Astr.Soc.Japan. (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hanawa,T.: "Giant Molecular Cloud Formation throgh the Parker Instability in a Sheared Magnetic Field" Astrophys.J.(1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Uchida,Y.: "The SolarーA Mission and Its Scientific Aims" Phil.Trans.Boy.Soc.London A. 336. 485-495 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Uchida,Y.: "A Magnetodynamic Model for Herbig Haso Objects" Publ.Astron.Soc.Japan. 44. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Todo,Y.: "Behavior of Jets from Young Stellar Objects in Large Scale Magnetic Fields" Publ.Astron Soc.Japan. 44. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Sato,T.: "Role of compressibility on driven magnetic reconnection" Physics of Fluids B. 4. 450-457 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Horiuchi,R.: "Threeーdimensional Particle Simulation study on stabilization of the FRC tilting Instability" Plasma Physics and Controlled Nuclear Fusion Research IAEA VIENNA. 2. 283-288 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kageyama,A.: "A Global Simulation of the magnetosphere with a long tail" No Interplanetary Magnetic Field.

    • Related Report
      1991 Annual Research Report
  • [Publications] Mineshige,S.: "SelfーSimilar Viscous Decay in DwarfーNova Outbursts" Mon.Notices.Roy.Astron Soc.250. 253-257 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Mineshige,S.: "Flywheels; Rapidly Rotating Magnetised Neutron Stars in Spherical Accretion" Mon.Notices.Roy.Astron Soc.252. 555-563 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Mineshige,S.: "Black Hole Accretion Disks Exhibiting Superhumps" Publ.Astron.Soc.Japan. 44. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nagasawa,M.: "Mixing in Convective SupernovaーBubble Solution vs.Blast Wave Solution" Supernovae Tenth Santa Cruz Summer Workshop. 245-248 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nagasawa,M.: "ThreeーDimensional Hydrodynamic calculation of an Accretion Disc by SPH Scheme" Frontiers of XーRay Astronomy. (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nagasawa,M.: "ThreeーDimensional Hydrodynamics of an Accretion Disk and Jet Formation" Active Galactic Nuclei:Heidelberg Conference. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Sakai,J.: "A Theory of Filament Eruptions before the Impulsive Phase of Solar Flares" Solar Physics. 137. 329-306 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Sakai,J.: "Prompt Particle Acceleration around Moving Xーpoint Magnetic Field during Inpulsive Phase of Solar Flares" Solar Physics. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nakano,T.: "Magnetic fields in accretion disks around propostars and fragmentation of the disks" Memorie della Societa Astronomia Itariana.

    • Related Report
      1991 Annual Research Report
  • [Publications] Nishi,R.: "Magnetic flux loss from dense interstellar clouds with iceーmantled grains" Astrophys.J.

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsuda,T.: "On the stability of wind accretion" Astronomy and Astrophsics. 248. 301-314 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsuda,T.: "Numerical simulations of twoーdimensional and threeーdimensional accretion flows" Monthly Notices of the Royal Astronomical Society. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Sawada,K.: "Threeーdimensional hydrodynamic simulation of an accretion flow in a close binary system" Monthly Notices of the Royal Astronomical Society. 255. 17-20 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nitta,S.: "Effects of Magnetohydrodynamic Accretion Flows on Global Structure of a Kerr BlackーHole Magnetosphere" Physical Review D.44. 2295-2305 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hirotani,K.: "Accretion in Kerr Black Hole Magnetosphere: Energy and Angular Momentum Transport between the Magnetic Field and the Matter" Astrophys.J.386. 455-463 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Umeki,H.: "Decay instability of incoherent Alfven waves" J.Geophys.Res.96. (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yokosawa,M.: "Extraction of Rotating Energy from a Black Hole by Frozen in Magnetic Field in Accretion Flow" Publications of the Astronomical Society of Japan. 43No.3. 427-447 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yokosawa,M.: "Magnetohydrodynamic Accretion onto a Rotating Black Hole" Proceeding of Sixth Marcel Grossmann Meeting on General Relativity. (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yokosawa,M.: "Nonlinear Expansion Triggered by Magnetic Stress in Accretion Flow onto a Black Hole" Proceedings of International Astronomical Union Colloquim on Nonlinear Phenomena in Variable Stars. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Chiba,M.: "Spiralーarm resonance in galactic dynamos" Mon.Not.R.astr.Soc.250. 769 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Chiba,M.: "Swing excitation of galactic magnetic fields induced by spiral density waves" Mon.Not.R.astr.Soc.244. 714 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hirotani,K.: "Time Variation of Magnetohydrodynamic Accretion onto a Rotating Black Hole" Astrophys.J.

    • Related Report
      1991 Annual Research Report
  • [Publications] Hayashi,T.: "Suppression of Magnetic Surface Breaking by Extra Coils in Finite Beta Equilibria of Helical Systems" Nuclear Fusion. 31. 1767-1770 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hayashi,T.: "Equilibrium Beta Limit and Anomalous Tranport Studies of Helical Systems" Plasma Physics and Controlled Nuclear Fusion Research. 2. 143-150 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hayashi,T.: "Magnetic Surface Breaking in Three Dimensional 1=2 Heliotron/Torsatron Equilibria" Physics of Fluids B. 4. NO.6 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Terasawa,T.: "Acceleration mechanisms for cometary ions" Geophys.Monograph. 61. 277-286 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Fujimoto,M.: "Ion inertia effect on the KelvinーHelmholtz instability" J.Geophys.Res.96. 15725-15734 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ogino,T.: "A Global magnetohydrodynamic Simulation of the Magnetosheath and Magnetosphere when the Interplanetary Magnetic Field is Northward" IEEE. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Maezawa,K.: "Dependence of the Polar Rain Intensity on the Dawnーtodusk Component of the Convection Electric Field" Journal of Geophysical Research. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kaburaki,O.: "Kerr Black Holes as a Carnot Engine" Phys.Rev.D.43. 340-345 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kudoh,T.: "Magnetohydrodynamical Winds with Finite Electrical Conductivity" Sci.Rep.Tohoku Univ.8th Ser.11. 131-136 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Okamoto,I.: "The Third Law of Thermodynamics of Kerr Black Holes" M.N.R.A.S.250. 300-309 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Fukue,J.: "MagneticーPresure Driven Jets from a Torus" PASJ. 43. 131-145 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Tosa,M.: "Structure of magnetic fields generated by galactic dynamos" Astrophys.Geophys.Fluid Dyn.50. 147 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Wada,K.: "Rapid gas supply to a nuclear region in a weak barred potential by selfーgravitational instability" Mon.Not.Roy.Astron Soc.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Habe,A.: "Gravitational instability induced by a cloud cloud collision.The case of head on collision between clouds with different sizes and densities" Publ.Astron.Soc.Japan.

    • Related Report
      1991 Annual Research Report
  • [Publications] Habe,A.: "Triggering the collapse of selfーgravitating clouds by torsional Alfven waves" Publ Astron Soc.Japan. 43. 703-718 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ugai,M.: "Computer Simulations of FieldーAligned Currents Generated by Fast Magnetic Reconnection in Three Dimensions" J.Geophys.Res.96. 21173-21181 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ugai,M.: "Computer Modelling of Three Dimensional Dynamics of Fast Reconnection" J.Plasma Phys.45. 251-266 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Fukue,J.: "Tides in Space Colony" PASJ. 43. 657-660 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Fukue,J.: "On the Regulation of Jet Speed in SS433" PASJ. 44. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Inutsuka,S.: "SelfーSimilar Solutions and the Stability of Collapsing Isothermal Filaments" Astrophys.J.388. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Watanabe,S.: "Collision and Tidal Interaction between Planetesimals" Astrophys.J.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Miyama,S.M.: "Criteria for Collapse and Fragmentation of Rotating Clouds" Publ Astron.Soc.Japan. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hachisu,I.: "Noulinear growth of RayleighーTaylor instabilities and mixing in SN1987A" Astrophys.J.(Letters). 358. L57-L61 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hachisu,I.: "RayleigyーTaylor Instabilities and Mixing in the Helium Star Models for Type Ib/Ic Supernovae" Astrophys.J.(Letters). 368. L27-L30 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hachisu,I.: "Mixing in Ejecta of Supernovae. I.General Properties of 2ーD RayleighーTaylor Instabilities and Mixing Width in Ejectaーof Supernovae" Astrophys.J.

    • Related Report
      1991 Annual Research Report
  • [Publications] 田中 基彦,西川 恭治: "高温プラズマの物理学" (株)丸善, 304 (1991)

    • Related Report
      1991 Annual Research Report

URL: 

Published: 1991-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi