Publications

  1. M. Hirota and P. J. Morrison, "Stability boundaries and sufficient stability conditions for stably stratified, monotonic shear flows", Physics Letters A, 380, 1856-1860 (2016) [URL]
  2. N. Aiba and M. Hirota, "Excitation of Flow-Stabilized Resistive Wall Mode by Coupling with Stable Eigenmodes in Tokamaks", Physical Review Letters, 114, 065001 (5pp) (2015) [URL]
  3. N. Aiba and M. Hirota, "Magnetohydrodynamic instability excited by interplay between a resistive wall mode and stable ideal magnetohydrodynamic modes in rotating tokamak plasmas", Physics of Plasmas, 22, 082512 (9pp) (2015) [URL]
  4. M. Hirota, Y. Hattori and P. J. Morrison, "Explosive magnetic reconnection caused by an X-shaped current-vortex layer in a collisionless plasma", Physics of Plasmas, 22, 052114 (11pp) (2015) [URL]
  5. M. Hirota, P. J. Morrison and Y. Hattori, "Variational necessary and sufficient stability conditions for inviscid shear flow", Proceedings of the Royal Society A, 470, 20140322 (23pp) (2014) [URL]
  6. N. Aiba, J. Shiraishi and M. Hirota, "Impact of plasma rotation on the linear physics of resistive wall modes in tokamaks", Plasma Physics and Controlled Fusion, 55, 074002 (7pp) (2013) [URL]
  7. M. Hirota, P. J. Morrison, Y. Ishii, M. Yagi and N. Aiba, "Nonlinear variational method for predicting fast collisionless magnetic reconnection", Nuclear Fusion, 53, 063024 (11pp) (2013) [URL]
  8. N. Aiba, M. Furukawa, M. Hirota, N. Oyama, A. Kojima, S. Tokuda and M. Yagi, "Mechanisms of plasma rotation on the type-I edge-localized mode in tokamaks", Nuclear Fusion, 51, 073012 (9pp) (2011) [URL]
  9. M. Hirota and N. Aiba, "Significant effect of plasma compressibility on nonlinear mode coupling of Alfvén eigenmodes", Nuclear Fusion, 51, 073037 (10pp) (2011) [URL]
  10. M. Hirota, "Variational formulation for weakly nonlinear perturbations of ideal magnetohydrodynamics", Journal of Plasma Physics, 77, 589-615 (2011) [URL]
  11. N. Aiba, M. Furukawa, M. Hirota and S. Tokuda, "Destabilization mechanism of edge localized MHD mode by a toroidal rotation in tokamaks", Nuclear Fusion, 50, 045002 (13pp) (2010) [URL]
  12. Y. Fukumoto, M. Hirota and Y. Mie, "Lagrangian approach to weakly nonlinear stability of elliptical flow", Physica Scripta, T142, 014049 (7pp) (2010) [URL]
  13. M. Hirota and S. Tokuda, "Wave-action conservation law for eigenmodes and continuum modes", Physics of Plasmas, 17, 082109 (11pp) (2010) [URL]
  14. M. Hirota, "Action-angle representation of waves and instabilities in flowing plasmas", Journal of Plasma Fusion Research Series, 9, 463-470 (2010) [URL]
  15. M. Hirota and Z. Yoshida, "Algebraic instability caused by acoustic modes in supersonic shear flows", Journal of Math-for-industry, 1, 123-130 (2009) [URL]
  16. M. Hirota, "Energetics of resistive wall modes in flowing plasmas", Plasma Science and Technology, 11, 409-412 (2009) [URL]
  17. Y. Fukumoto and M. Hirota, "Elliptical instability of a vortex tube and drift current induced by it", Physica Scripta, T132, 014041 (9pp) (2008) [URL]
  18. M. Hirota and Y. Fukumoto, "Action-angle variables for the continuous spectrum of ideal magnetohydrodynamics", Physics of Plasmas, 15, 122101 (11pp) (2008) [URL]
  19. M. Hirota and Y. Fukumoto, "Energy of hydrodynamic and magnetohydrodynamic waves with point and continuous spectra", Journal of Mathematical Physics, 49, 083101 (28pp) (2008) [URL]
  20. M. Furukawa, Z. Yoshida, M. Hirota and V. Krishan, "Irregular singularity of the magneto-rotational instability in a Keplerian disk", The Astrophysical Journal, 659, 1496-1504 (2007) [URL]
  21. M. Furukawa, Z. Yoshida, M. Hirota and V. Krishan, "MHD Stability in Flowing Plasmas: Connection between Fusion Plasma and Astrophysics Research", Plasma Fusion Research, 2, 016 (6pp) (2007) [URL]
  22. M. Furukawa, V. Krishan, M. Hirota and Z. Yoshida, "WKB Analysis of Axisymmetric Magneto-Rotational Instability in a Thin Accretion Disk", Plasma Fusion Research, 1, 001 (2pp) (2006) [URL]
  23. M. Hirota, Z. Yoshida and E. Hameiri, "Variational principle for linear stability of flowing plasmas in Hall magnetohydrodynamics", Physics of Plasmas, 13, 022107 (8pp) (2006) [URL]
  24. M. Hirota, T. Tatsuno and Z. Yoshida, "Resonance between continuous spectra: Secular behavior of Alfvén waves in a flowing plasma", Physics of Plasmas, 12, 012107 (11pp) (2005) [URL]
  25. M. Hirota and Z. Yoshida, "Algebraic Behavior of Fluctuations Attributed to Non-Hermitian Property of the Linearized MHD Equation", Journal of Plasma Fusion Research Series, 6, 173-175 (2004) [URL]
  26. M. Hirota, T. Tatsuno and Z. Yoshida, "Degenerate continuous spectra producing localized secular instability --- An example in a non-neutral plasma", Journal of Plasma Physics, 69, 397-412 (2003) [URL]
  27. M. Hirota, T. Tatsuno, S. Kondoh and Z. Yoshida, "Secular behavior of electrostatic Kelvin-Helmholtz (diocotron) modes coupled with plasma oscillations", Physics of Plasmas, 9, 1177-1184 (2002) [URL]

Prize

  1. 第5回日本物理学会若手奨励賞(領域2)
    廣田 真 "流れをもつプラズマの連続スペクトルに対する作用・角変数理論" (2011)

Grant

  1. 平成28〜31年度 科学研究費補助金 基盤研究C "拡張MHDモデルを用いた磁気ヘリシティ入射によるプラズマ電流駆動の理論構築" (廣田 真)
  2. 平成25〜27年度 科学研究費補助金 若手研究B "多階層力学系への変分法的アプローチによる高温プラズマの爆発的崩壊機構の理論研究" (廣田 真)
  3. 平成22〜24年度 科学研究費補助金 若手研究B "非一様プラズマにおける無限自由度モード間相互作用のハミルトン力学的研究" (廣田 真)