Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae

Kazunori Kohri, Shoichi Yamada, Shigehiro Nagataki

    Research output: Contribution to journal › Article

    5 Citations (Scopus)

    Abstract

    We study the stress tensor of electron in strong magnetic fields which are greater than the critical value Bc≃4.4×1013 G. We claim that such a strong magnetic field induces the anisotropic kinetic pressure term of electron in magnetohydrodynamic equations and can generate entropy in collisional quantum plasmas. We discuss its consequence to the neutrino-driven wind in core-collapse supernovae and argue that it can produce large entropy per baryon, S∼400kB. This mechanism might successfully account for the production of the heavy nuclei with mass numbers A=80-250 through the r-process nucleosynthesis.

    Original languageEnglish
    Pages (from-to)433-441
    Number of pages9
    JournalAstroparticle Physics
    Volume21
    Issue number4
    DOIs
    Publication statusPublished - 2004 Jul

    Fingerprint

    supernovae
    neutrinos
    entropy
    kinetics
    stress tensors
    heavy nuclei
    nuclear fusion
    magnetic fields
    magnetohydrodynamics
    baryons
    electrons

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae. / Kohri, Kazunori; Yamada, Shoichi; Nagataki, Shigehiro.

    In: Astroparticle Physics, Vol. 21, No. 4, 07.2004, p. 433-441.

    Research output: Contribution to journal › Article

    Kohri, K, Yamada, S & Nagataki, S 2004, 'Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae', Astroparticle Physics, vol. 21, no. 4, pp. 433-441. https://doi.org/10.1016/j.astropartphys.2004.02.007
    Kohri K, Yamada S, Nagataki S. Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae. Astroparticle Physics. 2004 Jul;21(4):433-441. https://doi.org/10.1016/j.astropartphys.2004.02.007
    Kohri, Kazunori ; Yamada, Shoichi ; Nagataki, Shigehiro. / Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae. In: Astroparticle Physics. 2004 ; Vol. 21, No. 4. pp. 433-441.
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