Core-collapse supernovae as supercomputing science

A status report toward six-dimensional simulations with exact Boltzmann neutrino transport in full general relativity

Kei Kotake, Kohsuke Sumiyoshi, Shoichi Yamada, Tomoya Takiwaki, Takami Kuroda, Yudai Suwa, Hiroki Nagakura

    Research output: Contribution to journalArticle

    43 Citations (Scopus)

    Abstract

    This is a status report on our endeavor to reveal the mechanism of core-collapse supernovae (CCSNe) by large-scale numerical simulations. Multi-dimensionality of the supernova engine, general relativistic magnetohydrodynamics, energy and lepton number transport by neutrinos emitted from the forming neutron star, aswell as nuclear interactions there, are all believed to play crucial roles in repelling infalling matter and producing energetic explosions. These ingredients are non-linearly coupled with one another in the dynamics of core collapse, bounce, and shock expansion. Serious quantitative studies of CCSNe hence make extensive numerical computations mandatory. Since neutrinos are neither in thermal nor in chemical equilibrium in general, their distributions in the phase space should be computed. This is a six-dimensional (6D) neutrino transport problem and quite a challenge, even for those with access to the most advanced numerical resources such as the "K computer". To tackle this problem, we have embarked on efforts on multiple fronts. In particular, we report in this paper our recent progresses in the treatment of multidimensional (multi-D) radiation hydrodynamics. We are currently proceeding on two different paths to the ultimate goal. In one approach, we employ an approximate but highly efficient scheme for neutrino transport and treat 3D hydrodynamics and/or general relativity rigorously; some neutrino-driven explosions will be presented and quantitative comparisons will be made between 2D and 3D models. In the second approach, on the other hand, exact, but so far Newtonian, Boltzmann equations are solved in two and three spatial dimensions; we will show some example test simulations. We will also address the perspectives of exascale computations on the next generation supercomputers.

    Original languageEnglish
    Article number01A301
    JournalProgress of Theoretical and Experimental Physics
    Volume2012
    Issue number1
    DOIs
    Publication statusPublished - 2012

    Fingerprint

    supernovae
    relativity
    neutrinos
    simulation
    explosions
    hydrodynamics
    supercomputers
    nuclear interactions
    ingredients
    magnetohydrodynamics
    neutron stars
    chemical equilibrium
    engines
    leptons
    resources
    shock
    expansion
    radiation
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Core-collapse supernovae as supercomputing science : A status report toward six-dimensional simulations with exact Boltzmann neutrino transport in full general relativity. / Kotake, Kei; Sumiyoshi, Kohsuke; Yamada, Shoichi; Takiwaki, Tomoya; Kuroda, Takami; Suwa, Yudai; Nagakura, Hiroki.

    In: Progress of Theoretical and Experimental Physics, Vol. 2012, No. 1, 01A301, 2012.

    Research output: Contribution to journalArticle

    @article{2dc8ead351804315816598db13bf3bde,
    title = "Core-collapse supernovae as supercomputing science: A status report toward six-dimensional simulations with exact Boltzmann neutrino transport in full general relativity",
    abstract = "This is a status report on our endeavor to reveal the mechanism of core-collapse supernovae (CCSNe) by large-scale numerical simulations. Multi-dimensionality of the supernova engine, general relativistic magnetohydrodynamics, energy and lepton number transport by neutrinos emitted from the forming neutron star, aswell as nuclear interactions there, are all believed to play crucial roles in repelling infalling matter and producing energetic explosions. These ingredients are non-linearly coupled with one another in the dynamics of core collapse, bounce, and shock expansion. Serious quantitative studies of CCSNe hence make extensive numerical computations mandatory. Since neutrinos are neither in thermal nor in chemical equilibrium in general, their distributions in the phase space should be computed. This is a six-dimensional (6D) neutrino transport problem and quite a challenge, even for those with access to the most advanced numerical resources such as the {"}K computer{"}. To tackle this problem, we have embarked on efforts on multiple fronts. In particular, we report in this paper our recent progresses in the treatment of multidimensional (multi-D) radiation hydrodynamics. We are currently proceeding on two different paths to the ultimate goal. In one approach, we employ an approximate but highly efficient scheme for neutrino transport and treat 3D hydrodynamics and/or general relativity rigorously; some neutrino-driven explosions will be presented and quantitative comparisons will be made between 2D and 3D models. In the second approach, on the other hand, exact, but so far Newtonian, Boltzmann equations are solved in two and three spatial dimensions; we will show some example test simulations. We will also address the perspectives of exascale computations on the next generation supercomputers.",
    author = "Kei Kotake and Kohsuke Sumiyoshi and Shoichi Yamada and Tomoya Takiwaki and Takami Kuroda and Yudai Suwa and Hiroki Nagakura",
    year = "2012",
    doi = "10.1093/ptep/pts009",
    language = "English",
    volume = "2012",
    journal = "Progress of Theoretical and Experimental Physics",
    issn = "2050-3911",
    publisher = "Oxford University Press",
    number = "1",

    }

    TY - JOUR

    T1 - Core-collapse supernovae as supercomputing science

    T2 - A status report toward six-dimensional simulations with exact Boltzmann neutrino transport in full general relativity

    AU - Kotake, Kei

    AU - Sumiyoshi, Kohsuke

    AU - Yamada, Shoichi

    AU - Takiwaki, Tomoya

    AU - Kuroda, Takami

    AU - Suwa, Yudai

    AU - Nagakura, Hiroki

    PY - 2012

    Y1 - 2012

    N2 - This is a status report on our endeavor to reveal the mechanism of core-collapse supernovae (CCSNe) by large-scale numerical simulations. Multi-dimensionality of the supernova engine, general relativistic magnetohydrodynamics, energy and lepton number transport by neutrinos emitted from the forming neutron star, aswell as nuclear interactions there, are all believed to play crucial roles in repelling infalling matter and producing energetic explosions. These ingredients are non-linearly coupled with one another in the dynamics of core collapse, bounce, and shock expansion. Serious quantitative studies of CCSNe hence make extensive numerical computations mandatory. Since neutrinos are neither in thermal nor in chemical equilibrium in general, their distributions in the phase space should be computed. This is a six-dimensional (6D) neutrino transport problem and quite a challenge, even for those with access to the most advanced numerical resources such as the "K computer". To tackle this problem, we have embarked on efforts on multiple fronts. In particular, we report in this paper our recent progresses in the treatment of multidimensional (multi-D) radiation hydrodynamics. We are currently proceeding on two different paths to the ultimate goal. In one approach, we employ an approximate but highly efficient scheme for neutrino transport and treat 3D hydrodynamics and/or general relativity rigorously; some neutrino-driven explosions will be presented and quantitative comparisons will be made between 2D and 3D models. In the second approach, on the other hand, exact, but so far Newtonian, Boltzmann equations are solved in two and three spatial dimensions; we will show some example test simulations. We will also address the perspectives of exascale computations on the next generation supercomputers.

    AB - This is a status report on our endeavor to reveal the mechanism of core-collapse supernovae (CCSNe) by large-scale numerical simulations. Multi-dimensionality of the supernova engine, general relativistic magnetohydrodynamics, energy and lepton number transport by neutrinos emitted from the forming neutron star, aswell as nuclear interactions there, are all believed to play crucial roles in repelling infalling matter and producing energetic explosions. These ingredients are non-linearly coupled with one another in the dynamics of core collapse, bounce, and shock expansion. Serious quantitative studies of CCSNe hence make extensive numerical computations mandatory. Since neutrinos are neither in thermal nor in chemical equilibrium in general, their distributions in the phase space should be computed. This is a six-dimensional (6D) neutrino transport problem and quite a challenge, even for those with access to the most advanced numerical resources such as the "K computer". To tackle this problem, we have embarked on efforts on multiple fronts. In particular, we report in this paper our recent progresses in the treatment of multidimensional (multi-D) radiation hydrodynamics. We are currently proceeding on two different paths to the ultimate goal. In one approach, we employ an approximate but highly efficient scheme for neutrino transport and treat 3D hydrodynamics and/or general relativity rigorously; some neutrino-driven explosions will be presented and quantitative comparisons will be made between 2D and 3D models. In the second approach, on the other hand, exact, but so far Newtonian, Boltzmann equations are solved in two and three spatial dimensions; we will show some example test simulations. We will also address the perspectives of exascale computations on the next generation supercomputers.

    UR - http://www.scopus.com/inward/record.url?scp=84966738858&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84966738858&partnerID=8YFLogxK

    U2 - 10.1093/ptep/pts009

    DO - 10.1093/ptep/pts009

    M3 - Article

    VL - 2012

    JO - Progress of Theoretical and Experimental Physics

    JF - Progress of Theoretical and Experimental Physics

    SN - 2050-3911

    IS - 1

    M1 - 01A301

    ER -