Dynamics and neutrino signal of black hole formation in nonrotating failed supernovae. II progenitor dependence

K. Sumiyoshi, Shoichi Yamada, H. Suzuki

    Research output: Contribution to journalArticle

    49 Citations (Scopus)

    Abstract

    We study the progenitor dependence of black hole formation and its associated neutrino signal due to the gravitational collapse of a nonrotating massive star, following on our previous study of a single progenitor model. We aim to clarify whether the dynamical evolution toward black hole formation occurs in the same manner for different progenitors and to examine whether the characteristic of neutrino bursts having short duration and rapidly increasing average energies is a general one. We perform numerical simulations using general relativistic neutrino radiation hydrodynamics to follow the dynamical evolution from the collapse of 40 and 50 M presupernova models to black hole formation via contracting proto-neutron stars. For the three progenitor models studied in this paper, we find that black hole formation occurs ∼0.4-1.5 s after core bounce through an increase of the proto-neutron star mass, accompanied by a short and energetic neutrino burst. The density profile of the progenitor is important in determining the accretion rate onto the proto-neutron star and, therefore, the duration of the neutrino burst. We compare the neutrino bursts of black hole-forming events from different progenitors and discuss whether they can be used to probe clearly the progenitor and the dense matter.

    Original languageEnglish
    Pages (from-to)1176-1185
    Number of pages10
    JournalAstrophysical Journal
    Volume688
    Issue number2
    DOIs
    Publication statusPublished - 2008 Dec 1

    Fingerprint

    supernovae
    neutrinos
    bursts
    neutron stars
    energetics
    hydrodynamics
    accretion
    probe
    gravitational collapse
    massive stars
    simulation
    energy
    probes
    radiation
    profiles
    rate

    Keywords

    • Black hole physics
    • Equation of state
    • Hydrodynamics
    • Neutrinos
    • Stars: Neutron
    • Supernovae: General

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Dynamics and neutrino signal of black hole formation in nonrotating failed supernovae. II progenitor dependence. / Sumiyoshi, K.; Yamada, Shoichi; Suzuki, H.

    In: Astrophysical Journal, Vol. 688, No. 2, 01.12.2008, p. 1176-1185.

    Research output: Contribution to journalArticle

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