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Co-operative Study of Compact and Diffuse Remnants in Supernova 1987A

Research Project

Project/Area Number 02302024
Research Category

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

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionUniversity of Tokyo

Principal Investigator

NOMOTO Ken'ichi  Univ.of Tokyo, Astronomy, Associate Professor, 理学部, 助教授 (90110676)

Co-Investigator(Kenkyū-buntansha) TSUNEMI Hiroshi  Osaka University, Physics, Associate Professor, 理学部, 助教授 (90116062)
TAKATSUKA Tatsuyuki  IWATE University, Physics, Professor, 人文社会科学部, 教授 (50043427)
MATSUDA Takuya  Kyoto University, Aerodynamics, Assoriate Professor, 工学部, 助教授 (20026206)
KOYAMA Katsuji  Kyoto University, Physics, Professor, 理学部, 教授 (10092206)
KAMAE Tsuneyoshi  Univ.of Tokyo, Physics, Professor, 理学部, 教授 (90011618)
長谷川 博一  大阪産業大学, 教養部, 教授 (20025232)
早川 幸男  名古屋大学, 学長 (60022498)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥8,800,000 (Direct Cost: ¥8,800,000)
Fiscal Year 1991: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1990: ¥4,800,000 (Direct Cost: ¥4,800,000)
KeywordsSupernova / Neutrino / X-ray / gamma-ray / Cosmic Ray / Dust / Pulsar / Neutron Star / ニュ-トリノ / パルサ-
Research Abstract

SN 1987A provides us with an excellent material to test the theory of massive star evolution, nucleosynthesis, and supernova explosion. Presupernova evolution of the progenitor, hydrodynamics of explosion, explosive nucleosynthesis, optical, X-ray and gamma-ray light curves due to ^<56>Co decay are calculated and compared with the observations of SN 1987A.
1. The unique evolution of the progenitor in the HR diagram can be understood in terms of mass loss and mixing. The mass loss drives the star to move from a blue to red supergiant. The excursion from the red back to the blue occurs if the hydrogen-rich envelope is metal deficient and becomes sufficiently helium-rich due to mixing.
2. The light curves in all wave bands indicate the explosion energy of E/M<@D2env@>D2=1.5(]SY.+-。[)0.5*10<@D150@>D1 erg/M<@D2(]SY.sun.[)@>D2, production of <@D156@>D1Ni with M<@D2Ni@>D2-0.07M<@D2(]SY.sun.[)@>D2. The plateau-like peak is found to be formed by the hydrogen recombination front and lasts longer if the hydrogen layr is deeper. This indicates the mixing of hydrogen into the deep interior.
3. The distribution of heavy elements in the ejecta is inferred also from the X-ray and gamma-ray light curves. The early emergence of X-ray and gamma-ray indicate the mixing of ^<56>Ni into the hydrogen-rich envelope. Flat X-ray light curve observed by Ginga would be due to the clumpy structure of the core.
4. Such a mixing is well modeled by the Rayleigh-Taylor instabilities during explosion. Two-dimensional hydrodynamical simulations have shown that the instability grows at the hydrogen/helium interface and mixes the supernova meterials.
5. The recent slowdown of the decline of the optical light curve is due to the contribution from another energy source, which would be either radioactive ^<56>Co or the buried neutron star. Recent balloon experiments have provided the upper limit to ^<57>Co and suggested that the pulsar activity is more likely the source.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] K.Nomoto and Y.Kondo: "Conditions for Accretion-Induced Collapse of White Dwarfs" Astrophysical Journal (Letters). 367. L19-L22 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Kozasa,H.Hasegawa,and K.Nomoto: "Formation of dust grains in the ejecta of SN1987A.II" Astronomy Astrophysics. 249. 474-482 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Koyama,H.Kunieda,Y.Takeuchi and Y.Tawara: "Discovery of ll-sec Pulsar from the X-Ray Sourse Sct X-l" Astrophysical Journal (Letters). 370. L77-L80 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Takatsuka: "Spin-up of Hot Neutron Stars Just Born by the Subsequent Cooling" Progress of Theoretical Physics. 85. 427-434 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Eriguchi,H.Yamaoka,K.Nomoto and M.Hashimoto: "The Ring around SN1987A and Rotation of the Progenitor" Astrophysical Journal. (in press). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Wakatsuki,A.Hikita N.Sato and N.Itoh: "The Nonexponential Evolution of Pulsar Magnetic Fields" Astrophysical Journal. (in press). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Shigeyama, and K.Nomoto: "Theoretical Light Curve of Supernova 1987A and Mixing of Hydrogen and Nickel in the Ejecta" Astrophysical Journal. 360. 242-256 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Nomoto, A.V.Filippenko, and T.Shigeyama: "The Type Ic Supernova 1987M : Core Collapse of a Low-Mass Helium Star in a Binary System" Astronomy and Astrophysics. 240. L1-L4 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Koyama, H.Kunieda, Y.Takeuchi and Y.Tawara: "Discovery of 11-sec Pulsar from the X-Ray Source Sct X-1" Astrophysical Journal (Letters). 370. L77 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Sato, and Y.Yamada: "Light Curve of SN 1987A and the Pulsar Cavity Model" Progress of Theoretical Physics. 85. 541-546 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Kumagai, T.Shigeyama, M.Hashimoto, and K.Nomoto: "Implications of the Recent Light Curve of SN 1987A" Astronomy and Astrophysics. 243. L13-L16 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] I.Hachisu, T.Matsuda, K.Nomoto, and T.Shigeyama: "Mixing in Ejecta of Supernovae. I.General properties of Two-Dimensional Rayleigh-Taylor Instabilities and Mixing Width in Ejecta of Supernovae" Astrophysical Journal. 390. 230-252 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Eriguchi, H.Yamaoka, K.Nomoto, and M.Hashimoto: "The ring around SN 1987A and rotation of the progenitor" Astrophysical Journal. 391. 1 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Nomoto and Y.Kondo: "Conditions for AccretionーInduced Collapse of White Dwarfs" Astrophysical Journal(Letters). 367. L19-L22 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Kozasa,H.Hasegawa and K.Nomoto: "Formation of dust grains in the ejecta of SN 1987 A.II" Astronomy Astrophysics. 249. 474-482 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Koyama,H.Kunieda,Y.Takeuchi and Y.Tawara: "Discovery of llーsec Pulsar from the XーRay Sourse Sct Xー1" Astrophysical Journal(Letters). 370. L77-L80 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Takatsuka: "Spinーup of Hot Neutron Stars Just Born by the Subseguent Cooling" Progress of Theoretical Physics. 85. 427-434 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Eriguchi,H.Yamaoka,K.Nomoto and M.Hashimoto: "The Ring around SN 1987A and Rotation of the Progenitor" Astrophysical Journal. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Wakatsuki,A.Hikita,N.Sato and N.Itoh: "The Nonexponential Evolution of Pulsair Magnetic Fields" Astrophysical Journal. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Nomoto,A.V.Filippenko and T.Shigeyama: "The Type Ic Supernova 1987M:Core Collapse of a LowーMass Helium Star in a Binary System" Astronomy Astrophysics. 240. L1-L4 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Yamada and K.Sato: "Global Mixing in SN 1987A by the Asymmetric Shock Wave" Astrophysical Journal. 358. L9-L12 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.Yamada,T.Nakamura and K.Oohara: "Three Dimesional Simulations of Supernova Explosion I" Progress of Theoretial Physics. 84. 436-443 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] I.Hachisu,T.Matsuda K.Nomoto,and T.Shigeyama: "Nonlinear Growth of RayleighーTaylor Instabilities and Mixing in SN 1987A" Astrophysical Journal (Letters). 358. L57-L61 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Shigeyama,K.Nomoto and T.Tsujimoto: "LowーMass Helium Star Models for Type Ib Supernovae:Light Curves,Mixing,and Nucleosynthesis" Astrophysical Journal (Letters). 361. L23-L27 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Nomoto and Y.Kondo: "Conditions for AccretionーInduced Collapse of White Dwarfs" Astrophysical Journal (Letters). 367. L19-L22 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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