Neutrino astronomy as a probe into physics of hot and dense matter

Ken'ichiro Nakazato, Kohsuke Sumiyoshi, Hideyuki Suzuki, Shoichi Yamada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We have performed several simulations on non-rotational core-collapses of a star with 4OM⊙ by a general relativistic ν-radiation-hydrodynamics code and computed quantitatively the dynamics up to the black hole formation as well as the neutrino luminosities and spectra. Employing different hadronic equations of state (EOS), we have demonstrated that the duration of neutrino emissions from this event is sensitive to the stiffness of EOS at supra-nuclear densities and, therefore, that the observation of neutrinos from such an event will provide us with valuable information on the properties of dense and hot hadronic matter as well as on the maximum mass of proto-neutron stars. However, this approach can not distinguish EOS's with a similar stiffness: a soft nucleonic EOS and a hyperonic EOS, for example. In this study, we attempt to break this degeneracy by analyzing more in detail the time variation of neutrino numbers observed at a terrestrial detector. Performing the Kolmogolov- Smirnovtest, which is free from the ambiguity of the distance to the progenitor, we show that the break-up of the degeneracy of hadronic EOS's is indeed feasible for Galactic events.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    Pages145-150
    Number of pages6
    Volume1238
    DOIs
    Publication statusPublished - 2010
    Event7th Tours Symposium on Nuclear Physics and Astrophysics - Kobe
    Duration: 2009 Nov 162009 Nov 20

    Other

    Other7th Tours Symposium on Nuclear Physics and Astrophysics
    CityKobe
    Period09/11/1609/11/20

    Fingerprint

    astronomy
    equations of state
    neutrinos
    physics
    probes
    stiffness
    nucleonics
    ambiguity
    neutron stars
    hydrodynamics
    luminosity
    stars
    detectors
    radiation
    simulation

    Keywords

    • Equation of state for nuclear matter
    • Neutrino astronomy
    • Stellar core collapse

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Nakazato, K., Sumiyoshi, K., Suzuki, H., & Yamada, S. (2010). Neutrino astronomy as a probe into physics of hot and dense matter. In AIP Conference Proceedings (Vol. 1238, pp. 145-150) https://doi.org/10.1063/1.3455918

    Neutrino astronomy as a probe into physics of hot and dense matter. / Nakazato, Ken'ichiro; Sumiyoshi, Kohsuke; Suzuki, Hideyuki; Yamada, Shoichi.

    AIP Conference Proceedings. Vol. 1238 2010. p. 145-150.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Nakazato, K, Sumiyoshi, K, Suzuki, H & Yamada, S 2010, Neutrino astronomy as a probe into physics of hot and dense matter. in AIP Conference Proceedings. vol. 1238, pp. 145-150, 7th Tours Symposium on Nuclear Physics and Astrophysics, Kobe, 09/11/16. https://doi.org/10.1063/1.3455918
    Nakazato K, Sumiyoshi K, Suzuki H, Yamada S. Neutrino astronomy as a probe into physics of hot and dense matter. In AIP Conference Proceedings. Vol. 1238. 2010. p. 145-150 https://doi.org/10.1063/1.3455918
    Nakazato, Ken'ichiro ; Sumiyoshi, Kohsuke ; Suzuki, Hideyuki ; Yamada, Shoichi. / Neutrino astronomy as a probe into physics of hot and dense matter. AIP Conference Proceedings. Vol. 1238 2010. pp. 145-150
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