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Studies on Hypernovae and Gamma-Ray Bursts

Research Project

Project/Area Number 12640233
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionThe University of Tokyo

Principal Investigator

NOMOTO Kenichi  Graduate School of Science, Professor, 大学院・理学系研究科, 教授 (90110676)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2001: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordsgamma-ray burst / supernova / hypernova / energy / black hole / stellar evolution / nucleosynthesis / spectra
Research Abstract

Some gamma-ray bursts are likely to be induced by hypernovae. We have studied several properties of three hypernovae, Sne 1998bw, 1999as, and 2002ap, and tried to clarify their 1) optical properties, 2) mechanisms of explosions and gamma-ray emissions, and 3) evolutionary origins. Our findings are summarized as follows :
1) We first modeled spectra of SN 1998bw to compare with observations and es-timated that its explosion energy is about 30 times larger than ordinary supernovae (Sne), its progenitor mass is about 40 solar mass, and the ejected mass of 56Ni is about a half solar mass.
2) For SN 1999as, we have found that this hypernova is the explosion of 50 solar mass star, its explosion energy is 40 times the ordinary Sne, and most strikingly the ejected mass of 56Ni amounts to 4 solar mass, which is 8 times larger than SN 1998bw.
3) Most recent hypernova SN 2002ap is found to be a moderate explosion The amount of 56Ni is 0.1 solar mass, similar to the ordinary Sne, its progenitor mass is 20-25 solar mass, being similar to ordinary Sne. However, its explosion energy is about 5 times larger than ordinary Sne, which indicates that SN 2002ap is a hypernova. In this way, SN 2002ap has properties between the ordinary Sne and hypernovae, which is a new finding and provide interesting example to study the gamma-ray burst - super- nova/hypernova connection.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] Maeda, K., Nakamura, T., Nomoto, K., Mazzali, P.A., Patat, F., Hachisu, I.: "Explosive Nucleosynthesis in Aspherical Hypernova Explosions and Late Time Spectra of SN1998bw"ApJ. 565. 405-412 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Umeda, H., Nomoto, K.: "Nucleosynthesis of Zinc and Iron-Peak Elements in Pop III Type II Supernovae : Comparison with Abundances of Very Metal-Poor Halo Stars"ApJ. 565. 385-407 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Podsiadlowski, Ph., Nomoto, K., Maeda, K., Nakamura, T., Mazzali, P., Schmidt, B.: "Formation of the Black Hole in Nova Scorpii"ApJ. 567. 491-502 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakamura, T., Umeda, H., Iwamoto, K., Nomoto, K., Hahimoto, M., Hix, W.R., Thielemann, F.-K.: "Explosive Nucleosynthesis in Hypernovae"ApJ. 555. 880-899 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakamura, T., Mazzali, P.A., Nomoto, K., Iwamoto, K.: "Light Curve and Spectral Models for the Hypernova SN1998bw Associated with GRB980425"ApJ. 550. 991-999 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mazzali, P.A., Nomoto, K., Patat, F.: "The Nebular Spectra of the Hypernova SN1998bw and Evidence for Asymmetry"ApJ. 559. 1047-1053 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mazzali, P.A., Nomoto, K., Cappellaro, E., Nakamura, T., Umeda, H., Iwamoto, K.: "Can Differences in the Nickel Abundance in Chandrasekhar Mass Models Explain the Relation between Brightness and Decline Rate of Normal Type Ia Supernovae?"ApJ. 547. 988-994 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Patat, F., Gappellaro, E., Danziger, I.J., Mazzali, P.A., Leibundgut, B., Nomoto, K., Nakamura, T., et al.: "The Metamorphosis of SN1998bw"ApJ. 555. 900-917 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Benetti, S., Turatto, S., Balberg, S., Zampieri, L., Shapiro, S.L., Cappellaro, E., Nomoto, K., Nakamura, T., Mazzali, P.A., Patat, F.: "The Fading of SN1997D"Monthly Notice of Royal Astronomical Society. 322. 361-368 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mazzali, P.A., Iwamoto, K., Nomoto, K.: "A Spectroscopi Analysis of the Energetic Type Ic Hypernova SN 1997ef"ApJ. 545. 407-419 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Iwamoto, K., Nakamura, T., Nomoto, K., Mazzali, P.A., Danziger, I.J., Garnavich, P., Kirshner, R., Jha, A., Balam, D., Thorstense, J.: "The Peculiar Type Ic Supernova 1997ef Another Hypernova"ApJ. 534. 660-669 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Umeda, H., Nomoto, K., Tsuruta, S., Mineshige, S.: "Impacts of the Detection of Cassiopeia A Point Source"ApJL. 534. 193-196 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Maeda, K., Nakamura, T., Nomoto, K., Mazzali, P.A , Patat, F., Hachisu, I.: "Explosive Nucleosynthesis in Aspherical Hypernova Explosions and Late Time Spectra of SN1998bw"Ap.J.. 565. 405-412 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Umeda, H., Nomoto, K.: "Nucleosynthesis of Zinc and Iron-Peak Elements in Pop III Type II Supernovae : Comparison with Abun-dances of Very Metal-Poor Halo Stars"Ap.J.. 565. 385-407 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Podsiadlowski, Ph., Nomoto, K., Maeda, K., Nakamura, T., Maz-zali, P., Schmidt, B: "Formation of the Black Hole in Nova Scorpii"Ap.J.. 567. 491-502 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakamura, T., Umeda, H., Iwamoto, K,, Nomoto, K., Hashimoto, M., Hix, W.R., Thielemann, F.-K.: "Explosive Nucleosynthesis in Hypernovae"Ap.J.. 555. 880-899 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakamura, T., Mazzali, P.A., Nomoto, K., Iwamoto, K.: "Light Curve and Spectral Models for the Hypernova SNl998bw Associated with GRB980425"Ap.J.. 550. 991-999 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mazzali, P.A., Nomoto, K., Patat, F.: "The Nebular Spectra of the Hypernova SN1998bw and Evidence for Asymmetry"Ap.J.. 559. 1047-1053 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mazzali, P.A., Nomoto, K., Cappellaro, E., Nakamura, T., Umeda, H., Iwamoto, K.: "Can Differences in the Nickel Abundance in Chandrasekhar Mass Models Explain the Relation between Brightness and Decline Rate of Normal Type la Super-novae?"Ap.J.. 547. 988-994 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Patat, F., Cappellaro, E., Danziger, I.J., Mazzali, P.A., Lei-bundgut, B., Nomoto, K., Nakamura, T., et al.: "The Metamor-phosis ofSN1998bw"Ap.J.. 555. 900-917 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Benetti, S., Turatto, S , Balberg, S., Zampieri, L., Shapiro S.L., Cappellaro, E., Nomoto, K., Nakamura, T., Mazzali, P.A., Patat, F.: "The Fading of SN1997D"Monthly Notice of Royal Astronomical Society. 322. 361-368 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mazzali, P.A., Iwamoto, K., Nomoto, K.: "A Spectroscopi Analysis of the Energetic Type Ic Hypernova SN 1997ef"Ap.J.. 545. 407-419 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Iwamoto, K., Nakamura, T., Nomoto, K , Mazzali, P.A., Danziger,I.J., Garaavich, P., Kirshner, R., Jha, A., Balam, D., Thorstense, J.: "The Peculiar Type Ic Supernova 1997ef Another Hypernova"Ap.J.. 534. 660-669 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Umeda, H., Nomoto, K., Tsuruta, S., Mineshige, S.: "Impacts of the Detection of Cassiopeia A Point Source I"ApJL. 534. 193-196 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Maeda, K., Nakamura, T., Nomoto, K., Mazzali, P.A., Patat, F., Hachisu, I.: "Explosive Nucleosynthesis in Aspherical Hypernova Explosions and Late Time Spectra of SN1998bw"ApJ. 565. 405-412 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Umeda, H., Nomoto, K.: "Nucleosynthesis of Zinc and Iron-Peak Elements in Pop III Type II Supernovae: Comparison with Abundances of Very Metal-Poor Halo Starts"ApJ. 565. 385-407 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Podsiadlowski, Ph., Nomoto, K., Maeda, K., Nakamura, T., Mazzali, P., Schmidt, B.: "Formation of the Black Hole in Nova Scorpii"ApJ. 567. 491-502 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nakamura, T., Umeda, H., Iwamoto, K., Nomoto, K., Hashimoto, M., Hix, W.R., Thielemann, F.-K.: "Explosive Nuclesynthesis in Hypernovae"ApJ. 555. 880-899 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nakamura, T., Mazzali, P.A., Nomoto, K., Iwamoto, K.: "Light Curve and Spectral Models for the Hypernova SN1998bw Associated with GRB980425"ApJ. 550. 991-999 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Mazzali, P.A., Nomoto, K., Patat, F.: "The Nebular Spectra of the Hypernova SN1998bw and Evidence for Asymmetry"ApJ. 559. 1047-1053 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Mazzali,P.A. et al.: "A Spectroscopic Analysis of the Energetic Type Ic Hyperova SN 1997ef"The Astrophysical Journal. 545. 407-419 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kobayashi,C. et al.: "The History of the Cosmic Supernova Rate Derived from the Evolution of the Host Galaxies"The Astrophysical Journal. 529. 26-38 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Nakasato,N. et al.: "Numerical Simulations of Globular Cluster Formation"The Astrophysical Journal. 535. 776-787 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Umeda,H. et al.: "Impacts of the Dtection of Cassiopeia A Point Source"The Astrophysical Journal Letters. 534. L193-L196 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Turatto,M. et al.: "The Properties of Supernova 1997cy Associated to GRB979514"The Astrophysical Journal Letters. 534. L57-L61 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Iwamoto,K. et al.: "The Peculiar Type Ic Supernova 1997ef : Another Hypernova"The Astrophysical Journal. 534. 660-669 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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