松本 仁 (マツモト ジン)

Matsumoto, Jin

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理工学研究科 慶應義塾基礎科学・基盤工学インスティテュート (矢上)

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  • Magnetic support for neutrino-driven explosion of 3D non-rotating core-collapse supernova models

    Jin Matsumoto, Yuta Asahina, Tomoya Takiwaki, Kei Kotake, Hiroyuki R. Takahashi

    Monthly Notices of the Royal Astronomical Society 516 ( 2 ) 1752 - 1767 2022年10月

    研究論文(学術雑誌), 共著, 査読有り

  • Chiral plasma instability and inverse cascade from nonequilibrium left-handed neutrinos in core-collapse supernovae

    Matsumoto J., Yamamoto N., Yang D.L.

    Physical Review D 105 ( 12 )  2022年06月

    研究論文(学術雑誌), 共著, 査読有り,  ISSN  24700010

     概要を見る

    We show that the backreaction of left-handed neutrinos out of equilibrium on the matter sector induces an electric current proportional to a magnetic field even without a chiral imbalance for electrons in core-collapse supernovae. We derive the transport coefficient of this effect based on the recently formulated chiral radiation transport theory for neutrinos. This chiral electric current generates a strong magnetic field via the so-called chiral plasma instability, which could provide a new mechanism for the strong and stable magnetic field of magnetars. We also numerically study the physical origin of the inverse cascade of the magnetic energy in the magnetohydrodynamics including this current. Our results indicate that incorporating the chiral effects of neutrinos would drastically modify the hydrodynamic evolutions of supernovae, which may also be relevant to the explosion dynamics.

  • Magnetic inhibition of the recollimation instability in relativistic jets

    Jin Matsumoto, Serguei S. Komissarov, Konstantinos N. Gourgouliatos

    Monthly Notices of the Royal Astronomical Society (Monthly Notices of the Royal Astronomical Society)  503 ( 4 ) 4918 - 4929 2021年05月

    研究論文(学術雑誌), 共著, 査読有り,  ISSN  00358711

     概要を見る

    In this paper, we describe the results of three-dimensional relativistic magnetohydrodynamic simulations aimed at probing the role of regular magnetic field on the development of the instability that accompanies recollimation of relativistic jets. In particular, we studied the recollimation driven by the reconfinement of jets from active galactic nuclei (AGN) by the thermal pressure of galactic coronas. We find that a relatively weak azimuthal magnetic field can completely suppress the recollimation instability in such jets, with the critical magnetization parameter σcr < 0.01. We argue that the recollimation instability is a variant of the centrifugal instability (CFI) and show that our results are consistent with the predictions based on the study of magnetic CFI in rotating fluids. The results are discussed in the context of AGN jets in general and the nature of the Fanaroff-Riley morphological division of extragalactic radio sources in particular.

  • 2D numerical study for magnetic field dependence of neutrino-driven core-collapse supernova models

    Jin Matsumoto, Tomoya Takiwaki, Kei Kotake, Yuta Asahina, Hiroyuki R. Takahashi

    Monthly Notices of the Royal Astronomical Society (Monthly Notices of the Royal Astronomical Society)  499 ( 3 ) 4174 - 4194 2020年12月

    研究論文(学術雑誌), 共著, 査読有り,  ISSN  00358711

     概要を見る

    We study the effects of the magnetic field on the dynamics of non-rotating stellar cores by performing 2D, magnetohydrodynamic (MHD) simulations. To this end, we have updated our neutrino-radiation-hydrodynamics supernova code to include MHD employing a divergence cleaning method with both careful treatments of finite volume and area reconstructions. By changing the initial strength of the magnetic field, the evolution of 15.0, 18.4, and 27.0 M☉ pre-supernova progenitors is investigated. An intriguing finding in our study is that the neutrino-driven explosion occurs regardless of the strength of the initial magnetic field. For the 2D models presented in this work, the neutrino heating is the main driver for the explosion, whereas the magnetic field secondary contributes to the pre-explosion dynamics. Our results show that the strong magnetic field weakens the growth of the neutrino-driven turbulence in the small scale compared to the weak magnetic field. This results in the slower increase of the turbulent kinetic energy in the post-shock region, leading to the slightly delayed onset of the shock revival for models with the stronger initial magnetic field.

  • Propagation, cocoon formation, and resultant destabilization of relativistic jets

    Jin Matsumoto, Youhei Masada

    Monthly Notices of the Royal Astronomical Society (Monthly Notices of the Royal Astronomical Society)  490 ( 3 ) 4271 - 4280 2019年12月

    研究論文(学術雑誌), 共著, 査読有り,  ISSN  00358711

     概要を見る

    A cocoon is a by-product of a propagating jet that results from shock heating at the jet head. Herein, considering simultaneous cocoon formation, we study the stability of relativistic jets propagating through the uniform ambient medium. Using a simple analytic argument, we demonstrate that independent from the jet launching condition, the effective inertia of the jet is larger than that of the cocoon when the fully relativistic jet oscillates radially owing to the pressure mismatch between jet and cocoon. In such situations, it is expected that the onset condition for the oscillation-induced Rayleigh-Taylor instability is satisfied at the jet interface, resulting in the destabilization of the relativistic jet during its propagation. We have quantitatively verified and confirmed our prior expectation by performing relativistic hydrodynamic simulations in three dimensions. The possible occurrences of the Richtmyer-Meshkov instability, oscillation-induced centrifugal instability, and Kelvin-Helmholtz instability are also discussed.

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競争的研究費の研究課題 【 表示 / 非表示

  • 三次元一般相対論的電磁流体シミュレーションで迫る活動銀河核ジェットの力学進化

    2020年04月
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    2023年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 松本 仁, 若手研究, 補助金,  研究代表者

  • 大質量星の重力崩壊に伴う磁気流体ジェットの加速メカニズム

    2019年08月
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    2021年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 松本 仁, 研究活動スタート支援, 補助金,  研究代表者

  • 三次元相対論的電磁流体シミュレーションで迫るガンマ線バーストジェットの正体

    2017年04月
    -
    2018年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 松本 仁, 若手研究 (B), 補助金,  研究代表者

  • 相対論的電磁流体シミュレーションによるマグネター巨大フレアの研究

    2010年04月
    -
    2011年03月

    松本仁, 特別研究員奨励費, 補助金,  研究代表者