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

MECHANISM OF SUPERNOVA EXPLOSIONS AND THE EQUATION OF STATE HIGH-DENSITY MATTER

Research Project

Project/Area Number 04640391
Research Category

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

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionDOSHISHA WOMEN'S COLLEGE OF LIBERAL ARTS

Principal Investigator

TAKAHARA Mariko  DOSHISHA WOMEN'S COLLEGE OF LIBERAL ARTS, FACULTY OF LIBERAL ARTS, ASSOCIATE PROFESSOR, 学芸学部, 助教授 (00197196)

Co-Investigator(Kenkyū-buntansha) SATO Katsuhiko  UNIVERSITY OF TOKYO, FACULTY OF SCIENCE, PROFESSOR, 理学部, 教授 (00111914)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1993: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
KeywordsSupernova Explosion / Equation of State / Electron Capture / Shock Wave / Rotation / Convectve Instability / Neutrinos / SN1987A / 相転移 / 回転
Research Abstract

We study the important physical proceeses of supernova explosions to clarify the mechanism of explosions. We obtain the following results.
1.We calculate the soft equtation of state considering the first order phase transition and investigate its characterintics. Using this equation of state, we performed the simulation of the collapse of iron cores and investigate the effects of phase transitions on the dynamics of supernova explosion.
2.We find that the phase taransition does occur in the collapsing core and the core becomes very hot after the phase transition, which induces the neutrino emissions. The contribution of this results to the increase of the neutrino liminosity is now under the investigation.
3.We calculate the weak interaction rates in the stellar matter for sd-shell nuclei as precisely as possible. As for the fp-shell nuclei, the method for the precise calculation is now studied.
4.We investigate the effects of the rotation on the dynamics of supernova explosions and find the rotation decreases the possibility of the explosions.
5.We calculate the convective instability in the hot bubble and find that, though the convection does ocur there, the neutino luminosity does not increase to the level necessary for the explosion.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] 小田健司: "Weak Interaction Rates of sd Shell Nuclei in Stellar Matter" Unstable Nuclei in Astrophysics:Proceedings of the International Workshop. 205-208 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 高原まり子: "Supernova Explosions and the Soft Equation of State" The Structure and Evolution of Neutron Stars. 268-275 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 石川真一郎: "Asymmetric Explosion in SN1987A" Astronomy and Astrophysics. 258. 415-422 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 小田健司: "Gamow-Teller Strength Distributions in the sd-Shell Nuclei and the Weak Interaction Rates in Stellar Matter" Inst.Phys.Conf.Ser.No.132:Section 6 Proceedings of 6th Int.Conf.on Nuclei-Far From Stability & 9th Int.Conf.on Atomic Masses and Fundamental Constants. 797-799 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 山田章一: "Convective Instability in Hot Bubble in a Delayed Supernova Explosion" Progress of Theoretical Physics. 89. 1175-1182 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 清水鉄也: "Three-Dimensional Simulations of Convection in Supernova Cores" Publication of Astronomical Society of Japan. 45. L53-L57 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 佐藤勝彦: "Neutrinos and Explosion Mechanism of Supernovae" Frontiers of Neutrino Astrophysics. 191-202 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 小田健司: "Rate Tables for the Weak Processes of sd-Shell Nuclei in Stellar Matter" Atomic Data and Nuclear Data Tables. 56(発表予定). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 高原まり子: "壮絶なる星の死、超新星爆発" 培風館, 173 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takeshi Oda: "Weak Interaction Rates of sd Shell Nuclei in Stellar Matter" Unstable Nuclei in Astrophysics : Proceedings of the International Workshop. 205-208 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Mariko Takahara: "Supernova Explosions and the Soft Equation of State" The Structure and Evolution of Neutron Stars. 268-275 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shin-ichiro Ishikawa: "Asymmetric Explosion in SN1987A" Astronomy and Astrophysics. 258. 415-412 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takeshi Oda: "Gamow-Teller Strength Distrubution in the sd-Shell Nuclei and the Weak Interaction Rates in Stellar Matter" Inst.Phys.Conf.Ser.No.132 Section 6, Proceedings of 6th Int, Conf.on Nuclei Far From Stability & 9th Int.Conf.on Atomic Masses and Fundamental Constants. 797-799 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shoichi Yamada: "Convective Instability in Hot Bubble in a Delayd Supernova Explosion" Prog.Theor.Phys.89. 1175-1182 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Tetsuya Shimizu: "Three-Dimensional Simulations of Convection in Supernova Cores" Publication of Astronomical Society of Japan. 45. L53-L57 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Katsuhiko Sato: "Neutrions and Explosion Mecahnism of supernova" Frontiers of Neutrino Astropysics. 91-202 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takeshi Oda: "Rate Tables for the Weak Processes of sd-Shell Nuclei in stellar matter" Atomic Data and Nuclear Data Tables. 56, to be Publishied.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Mariko Takahara: The Magnificent Death of Stars. Baifukan, 173pages (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 小田健司: "Weak Interaction Rates of sd Shell Nuclei in Stellar Matter" Unstable Nuclei in Astrophysics:Proceedings of the International. 205-208 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 高原まり子: "Supernova Explosions and the Soft Eguation fu State" The Structure and Evolution of Neutron Stars,Addison Wesley. 268-275 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 石川真一郎: "Asymmetric Explosion in SN1987A" Astronorny and Astrophysics. 258. 415-422 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小田健司: "Gamow-Teller Strength Distributions in the sd-Shell Nuclei and the Weak Interaction Rates in stellar Matter" Proceedings of the Sixth International Conference on Nuclei For From Stability and Ninth International Conference on Atomic Masses and Fundamental Constants,Institute of Physics Publishrg Ltd.797-799 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田章一: "Convective Instability in Hot Bublles in Delayed supernova Explosion" Progress of Theoretical Physics. 89. 1175-1182 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 清水 鉄也: "Three Dimmensional Simulation of Convection in Supernova Coves" Publication of Astronomical Society of Japan. 45. L53-L57 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 佐藤勝彦: "Neutninos and Explosion Mechanism of Supernovae" Frontiers of Neutrino Astrophysics,Universal Acodemy pross. 191-202 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小田健司: "Rate Tables for the Weak Processes of sd Shell Nuclei in Stellar Matter" Atomic Data and Nuclear Data Tables. 56(発表予定). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 高原まり子: "壮絶なる星の死-超新星爆発-" 培風館, 170 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 高原 まり子: "Supernova Explosions and the Soft Equation of State" The Structure and Evolution of Neutron Stars Conference Proceedings edited by D.Pines,R.Tamagaki & E.Tsuruta. 268-275 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 石川 真一郎: "Asymmetric Explosion in SN1987A" Astronomy and Astro physics. 258. 415-422 (1992)

    • Related Report
      1992 Annual Research Report

URL: 

Published: 1992-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi