Supernova neutrino nucleosynthesis of the radioactive 92Nb observed in primitive meteorites

T. Hayakawa, K. Nakamura, T. Kajino, S. Chiba, N. Iwamoto, M. K. Cheoun, G. J. Mathews

    Research output: Contribution to journalArticle

    24 Citations (Scopus)

    Abstract

    The isotope 92Nb decays to 92Zr with a half-life of 3.47 × 107 yr. Although this isotope does not exist in the current solar system, initial abundance ratios for 92Nb/ 93Nb at the time of solar system formation have been measured in primitive meteorites. The astrophysical origin of this material, however, has remained unknown. In this Letter, we present new calculations which demonstrate a novel origin for 92Nb via neutrino-induced reactions in core-collapse supernovae (ν-process). Our calculated result shows that the observed ratio of 92Nb/93Nb ∼ 10-5 can be explained by the ν-process.

    Original languageEnglish
    Article numberL9
    JournalAstrophysical Journal Letters
    Volume779
    Issue number1
    DOIs
    Publication statusPublished - 2013 Dec 10

    Fingerprint

    meteorites
    nuclear fusion
    solar system
    meteorite
    supernovae
    neutrinos
    isotopes
    isotope
    half life
    astrophysics
    decay
    calculation
    material

    Keywords

    • meteorites, meteors, meteoroids
    • neutrinos
    • supernovae: general

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Hayakawa, T., Nakamura, K., Kajino, T., Chiba, S., Iwamoto, N., Cheoun, M. K., & Mathews, G. J. (2013). Supernova neutrino nucleosynthesis of the radioactive 92Nb observed in primitive meteorites. Astrophysical Journal Letters, 779(1), [L9]. https://doi.org/10.1088/2041-8205/779/1/L9

    Supernova neutrino nucleosynthesis of the radioactive 92Nb observed in primitive meteorites. / Hayakawa, T.; Nakamura, K.; Kajino, T.; Chiba, S.; Iwamoto, N.; Cheoun, M. K.; Mathews, G. J.

    In: Astrophysical Journal Letters, Vol. 779, No. 1, L9, 10.12.2013.

    Research output: Contribution to journalArticle

    Hayakawa, T, Nakamura, K, Kajino, T, Chiba, S, Iwamoto, N, Cheoun, MK & Mathews, GJ 2013, 'Supernova neutrino nucleosynthesis of the radioactive 92Nb observed in primitive meteorites', Astrophysical Journal Letters, vol. 779, no. 1, L9. https://doi.org/10.1088/2041-8205/779/1/L9
    Hayakawa, T. ; Nakamura, K. ; Kajino, T. ; Chiba, S. ; Iwamoto, N. ; Cheoun, M. K. ; Mathews, G. J. / Supernova neutrino nucleosynthesis of the radioactive 92Nb observed in primitive meteorites. In: Astrophysical Journal Letters. 2013 ; Vol. 779, No. 1.
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    AU - Nakamura, K.

    AU - Kajino, T.

    AU - Chiba, S.

    AU - Iwamoto, N.

    AU - Cheoun, M. K.

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