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Last Updated :2024/04/12

masada yohei

Faculty of Science
Associate professor

Researcher information

■ Degree
  • 博士, 京都大学
■ Research Keyword
  • Astroinformatics
  • Solar and Astrophysical Plasma
  • 超新星爆発
  • 磁気流体力学
  • 太陽物理
  • 天体物理
  • Computational Science
  • MagnetoHydrodynamics
  • Stellar Physics
■ Field Of Study
  • Natural sciences, Space and planetary science
  • Energy, Basic plasma science
  • Natural sciences, Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
  • Natural sciences, Astronomy

Career

■ Career
  • Apr. 2022 - Present
    Fukuoka University, Faculty of Science Department of Applied Physics, Associate Professor
  • Apr. 2019 - Mar. 2022
    Aichi University of Education, Department of Science Education, Associate Professor
  • Apr. 2017 - Mar. 2019
    Aichi University of Education, Department of Science Education, Lecturer
  • Apr. 2015 - Mar. 2017
    Aichi University of Education, Department of Physics and Astronomy, Assistant Professor
  • May 2010 - Mar. 2015
    Kobe University, Department of Computational Science, Assistant Professor
  • Apr. 2009 - Apr. 2010
    National Astronomical Observatory of Japan, Solar and Plasma Astrophysics Division, Postdoctoral Research Fellow
  • Apr. 2008 - Mar. 2009
    Academia Sinica Institute of Astronomy and Astrophysics, Theoretical Institute for Advanced Research in Astrophysics, Postdoctoral Research Fellow
■ Educational Background
  • Apr. 2005 - Mar. 2008
    Kyoto University, Graduate School of Science, Division of Physics and Astronomy
  • Apr. 2003 - Mar. 2005
    Osaka University, Graduate School of Science, Department of Earth and Space Science
  • Apr. 1999 - Mar. 2003
    Osaka University, School of Science, Department of Physics
  • Apr. 1995 - Mar. 1998
    鹿児島県立鶴丸高等学校

Research activity information

■ Paper
  • Multi-scale deep learning for estimating horizontal velocity fields on the solar surface
    Ryohtaroh T. Ishikawa; Motoki Nakata; Yukio Katsukawa; Youhei Masada; Tino L. Riethmüller
    Astronomy & Astrophysics, Feb. 2022, Refereed
  • Convection and Dynamo in Newly Born Neutron Stars
    Youhei Masada; Tomoya Takiwaki; Kei Kotake
    The Astrophysical Journal, Jan. 2022, Refereed
    Lead
  • Propagation, cocoon formation, and resultant destabilization of relativistic jets
    Jin Matsumoto; Youhei Masada
    Monthly Notices of the Royal Astronomical Society, 11 Dec. 2019, Refereed
  • Neutrino-dominated Accretion Flows with Magnetic Prandtl Number-dependent MRI-driven Turbulence
    Norita Kawanaka; Youhei Masada
    The Astrophysical Journal, 21 Aug. 2019, Refereed
  • Chiral magnetohydrodynamic turbulence in core-collapse supernovae
    Youhei Masada; Kei Kotake; Tomoya Takiwaki; Naoki Yamamoto
    Phys. Rev. D 98, 083018 (2018), May 2018, Refereed
    Lead
  • Large-scale dynamos in rapidly rotating plane layer convection
    P. J. Bushby; P. J. Käpylä; Y. Masada; A. Brandenburg; B. Favier; C. Guervilly; M. J. Käpylä
    Astronomy and Astrophysics, 01 Apr. 2018, Refereed
  • Pointing stability of Hinode and requirements for the next Solar mission Solar-C
    Y. Katsukawa; Y. Masada; T. Shimizu; S. Sakai; K. Ichimoto
    Proceedings of SPIE - The International Society for Optical Engineering, 2017, Refereed
  • SPONTANEOUS FORMATION OF SURFACE MAGNETIC STRUCTURE FROM LARGE-SCALE DYNAMO IN STRONGLY STRATIFIED CONVECTION
    Youhei Masada; Takayoshi Sano
    ASTROPHYSICAL JOURNAL LETTERS, May 2016, Refereed
    Lead
  • Synergetic Growth of the Rayleigh-Taylor and Richtmyer-Meshkov Instabilities in the Relativistic Jet
    Jin Matsumoto; Youhei Masada
    Proceedings of the International Astronomical Union, 2016, Refereed
  • DIFFERENTIAL ROTATION IN MAGNETIZED AND NON-MAGNETIZED STARS
    Jun Mabuchi; Youhei Masada; Akira Kageyama
    ASTROPHYSICAL JOURNAL, Jun. 2015, Refereed
    Corresponding
  • MAGNETOHYDRODYNAMIC TURBULENCE POWERED BY MAGNETOROTATIONAL INSTABILITY IN NASCENT PROTONEUTRON STARS
    Youhei Masada; Tomoya Takiwaki; Kei Kotake
    ASTROPHYSICAL JOURNAL LETTERS, Jan. 2015, Refereed
    Lead
  • Long-term evolution of large-scale magnetic fields in rotating stratified convection
    Youhei Masada; Takayoshi Sano
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Dec. 2014, Refereed
    Lead
  • Mean-Field Modeling of α^2-Dynamo Coupled with Direct Numerical Simulations of Rigidly Rotating Convection
    Youhei Masada; Takayoshi Sano
    ASTROPHYSICAL JOURNAL LETTERS, Oct. 2014, Refereed
    Lead
  • EFFECTS OF PENETRATIVE CONVECTION ON SOLAR DYNAMO
    Youhei Masada; Kohei Yamada; Akira Kageyama
    ASTROPHYSICAL JOURNAL, Nov. 2013, Refereed
    Lead
  • High-Speed Volume Rendering in CAVEs
    Yuki YAMAURA; Youhei MASADA; Akira KAGEYAMA
    Plasma and Fusion Research, Sep. 2013, Refereed
  • TWO-DIMENSIONAL NUMERICAL STUDY FOR RAYLEIGH-TAYLOR AND RICHTMYER-MESHKOV INSTABILITIES IN RELATIVISTIC JETS
    Jin Matsumoto; Youhei Masada
    ASTROPHYSICAL JOURNAL LETTERS, Jul. 2013, Refereed
  • Rayleigh-Taylor and Richtmyer-Meshkov Instabilities in Relativistic Hydrodynamic Jets
    Jin Matsumoto; Youhei Masada
    INNERMOST REGIONS OF RELATIVISTIC JETS AND THEIR MAGNETIC FIELDS, 2013
  • Applications and a three-dimensional desktop environment for an immersive virtual reality system
    Akira Kageyama; Youhei Masada
    24TH IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (IUPAP-CCP 2012), 2013, Refereed
  • LOCAL SIMULATIONS OF THE MAGNETOROTATIONAL INSTABILITY IN CORE-COLLAPSE SUPERNOVAE
    Youhei Masada; Tomoya Takiwaki; Kei Kotake; Takayoshi Sano
    ASTROPHYSICAL JOURNAL, Nov. 2012, Refereed
    Lead
  • EFFECT OF INTERACTING RAREFACTION WAVES ON RELATIVISTICALLY HOT JETS
    Jin Matsumoto; Youhei Masada; Kazunari Shibata
    ASTROPHYSICAL JOURNAL, Jun. 2012, Refereed
  • Visualization Software with VR Juggler for Immersive Virtual Reality Environment
    Meno, D; Kageyama, A; Masada, Y
    Transaction of the Japan Society for Simulation Technology,Vol.4, No4, pp190-193, 2012, Refereed
  • Multimessengers from Core-Collapse Supernovae: Multidimensionality as a Key to Bridge Theory and Observation
    Kei Kotake; Tomoya Takiwaki; Yudai Suwa; Wakana Iwakami Nakano; Shio Kawagoe; Youhei Masada; Shin-ichiro Fujimoto
    ADVANCES IN ASTRONOMY, 2012, Refereed
  • SCALING LAW OF RELATIVISTIC SWEET-PARKER-TYPE MAGNETIC RECONNECTION
    Hiroyuki R. Takahashi; Takahiro Kudoh; Youhei Masada; Jin Matsumoto
    ASTROPHYSICAL JOURNAL LETTERS, Oct. 2011, Refereed
  • SPECIAL RELATIVISTIC MAGNETOHYDRODYNAMIC SIMULATION OF A TWO-COMPONENT OUTFLOW POWERED BY MAGNETIC EXPLOSION ON COMPACT STARS
    Jin Matsumoto; Youhei Masada; Eiji Asano; Kazunari Shibata
    ASTROPHYSICAL JOURNAL, May 2011, Refereed
  • Impact of magnetohydrodynamic turbulence on thermal wind balance in the Sun
    Youhei Masada
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Feb. 2011, Refereed
    Lead
  • STABILITY OF MRI-TURBULENT ACCRETION DISKS
    Hiroyuki R. Takahashi; Youhei Masada
    ASTROPHYSICAL JOURNAL, Feb. 2011, Refereed
  • Special relativistic magnetohydrodynamic simulation of two-component outflow powered by magnetic explosion on compact stars
    Jin Matsumoto; Youhei Masada; Eiji Asano; Kazunari Shibata
    ADVANCES IN PLASMA ASTROPHYSICS, 2011
  • Numerical study of relativistic magnetic reconnections
    Takahashi H.R; Matsumoto J; Masada Y; Kudoh T
    AIP Conference Proceedings, 2010
  • Axisymmetric magneto-rotational instability in viscous accretion disks
    Youhei Masada; Takayoshi Sano
    COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES, 2009
  • Large solar-type magnetic reconnection model for magnetar giant flare
    Youhei Masada
    COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES, 2009
  • Dead zone formation and non-steady hyperaccretion in collapsar disks
    Youhei Masada
    COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES, 2009
  • Two-dimensional numerical study for relativistic outflow from strongly magnetized neutron stars
    Jin Matsumoto; Youhei Masada; Eiji Asano; Kazunari Shibata
    COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES, 2009
  • MAGNETOROTATIONAL INSTABILITY IN VISCOUS MEDIA: APPLICATION TO THE CENTRAL ENGINE OF GAMMA-RAY BURSTS
    Y. Masada; K. Shibata
    MAGNETIC FIELDS IN THE UNIVERSE II: FROM LABORATORY AND STARS TO THE PRIMORDIAL UNIVERSE, 2009
  • Axisymmetrjc magnetorotational instability in viscous accretion disks
    Youhei Masada; Takayoshi Sano
    Astrophysical Journal, 20 Dec. 2008, Refereed
    Lead
  • Zeeman Spectrum from a Magnetically Triggered Jet
    Ryohei Suzaki; Youhei Masada; Hideyuki Kamaya
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Aug. 2008, Refereed
    Corresponding
  • Solar-type Magnetic Reconnection Model for Magnetar Giant Flare
    Youhei Masada; Shigehiro Nagataki; Kazunari Shibata; Toshio Terasawa
    Publications of the Astronomical Society of Japan, Mar. 2008, Refereed
    Lead
  • Dead zone formation and nonsteady hyperaccretion in collapsar disks: A possible origin of short-term variability in the prompt emission of gamma-ray bursts
    Youhei Masada; Norita Kawanaka; Takayoshi Sano; Kazunari Shibata
    ASTROPHYSICAL JOURNAL, Jul. 2007, Refereed
    Lead
  • The effect of neutrino radiation on magnetorotational instability in proto-neutron stars
    Youhei Masada; Takayoshi Sano; Kazunari Shibata
    ASTROPHYSICAL JOURNAL, Jan. 2007, Refereed
    Lead
  • Nonaxisymmetric magnetorotational instability in proto-neutron stars
    Y Masada; T Sano; H Takabe
    ASTROPHYSICAL JOURNAL, Apr. 2006, Refereed
    Lead
■ MISC
  • 太陽内部熱対流の非局所性とその輸送ダイナミクスへの影響
    政田洋平; 佐野孝好
    大阪大学レーザー科学研究所共同利用・共同研究成果報告書(Web), 2021
  • 乱流パンピングによる黒点状磁場の自発的組織化
    政田洋平; 佐野孝好
    大阪大学レーザーエネルギー学研究センター共同利用・共同研究成果報告書, 2017
  • 熱対流が担う上部対流層での磁場の構造形成
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2017
  • 強密度成層下での対流ダイナモと磁場の組織化
    政田洋平; 佐野孝好
    大阪大学レーザーエネルギー学研究センター共同利用・共同研究成果報告書, 2016
  • 強密度成層が誘起するダイナモ生成磁束の浮上と活動領域の自発的形成
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2016
  • 太陽ダイナモ機構 - 理解の現状と将来展望 - （講座 MHDダイナモ：流れによる磁場の自発的形成）
    政田 洋平
    プラズマ核融合学会誌2015年10月号, Oct. 2015
  • 乱れた熱対流中での乱れのない磁場の生成
    政田 洋平
    天文月報【2015年10月号 (EUREKA)】, Oct. 2015
  • α2ダイナモのスケーリング則が示唆する磁場の飽和の物理
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2015
  • 対流を模擬した鉛直シアー流による磁気回転不安定の抑制
    佐野孝好; 政田洋平
    日本天文学会年会講演予稿集, 2015
  • 太陽内部マルチスケール熱対流と回転・磁場の効果
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2015
  • 強い密度成層下での対流ダイナモと磁気スポット形成の物理
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2015
  • 回転成層対流が励起するα2ダイナモモードの時空間進化
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2014
  • 大局的磁場の振動周期およびマイグレーションと磁気ヘリシティ損失
    政田洋平; 佐野孝好
    日本天文学会年会講演予稿集, 2014
  • 26aEA-6 三次元Richtmyer-Meshkov不安定の非線形成長に伴う磁場増幅過程(26aEA 領域2,地球電磁気・地球惑星圏学会,日本天文学会合同 プラズマ宇宙物理(3学会合同セッション:MHD,流体現象),領域2(プラズマ基礎・プラズマ科学・核融合プラズマ・プラズマ宇宙物理))
    Sano Takayoshi; Nishihara Katsunobu; Matsuoka Chihiro; Inoue Tsuyoshi; Masada Yohei; Kageyama Akira
    Meeting abstracts of the Physical Society of Japan, 26 Mar. 2013
  • シミュレーションデータの新しい可視化スタイルの試み : 固定視点動画の移動視点再生 (第40回可視化情報シンポジウム講演論文集) -- (一般講演 可視化手法)
    山田 知輝; 陰山 聡; 政田 洋平
    可視化情報学会誌 = ournal of the Visualization Society of Japan, 2012
  • 没入型バーチャルリアリティ装置によるシミュレーションデータの可視化
    陰山 聡; 政田 洋平; 目野 大輔
    可視化情報学会誌, 2011
  • 相対論的Sweet-Parker型磁気リコネクションの数値的研究(宇宙・惑星(1),一般講演)
    Takahashi Hiroyuki R.; Matsumoto Jin; Masada Youhei; Kudoh Takahiro
    日本流体力学会年会講演論文集, 2010
  • 28aSA-3 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(28aSA プラズマ宇宙物理(MHD現象:非線形MHD現象とシミュレーション研究1),領域2(プラズマ基礎・プラズマ科学・核融合プラズマ・プラズマ宇宙物理))
    Matsumoto Jin; Masada Youhei; Asano Eiji; Shibata Kazunari
    Meeting abstracts of the Physical Society of Japan, 03 Mar. 2009
  • 相対論的磁気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(宇宙・惑星(4),一般講演)
    MATSUMOTO Jin; MASADA Youhei; ASANO Eiji; SHIBATA Kazunari
    日本流体力学会年会講演論文集, 2008
  • 26pXA-12 大質量星の進化過程におけるMHD不安定性と角運動量輸送 : 差動回転と磁楊を伴う系の局所安定性解析(プラズマ宇宙物理(MHD現象3),領域2(プラズマ基礎・プラズマ科学・核融合プラズマ・プラズマ宇宙物理))
    Masada Youhei
    Meeting abstracts of the Physical Society of Japan, 04 Mar. 2005
■ Books and other publications
  • 天文宇宙検定公式テキスト 2級 銀河博士 2021~2022年版
    天文宇宙検定委員会, Joint editor
    恒星社厚生閣, 03 Aug. 2021
    4769916671
  • 天文宇宙検定公式問題集 2級 銀河博士 2020~2021年版
    天文宇宙検定委員会, Contributor
    恒星社厚生閣, 20 Jul. 2020
    4769916507
  • 極・宇宙を解く: 現代天文学演習
    福江, 純; 沢, 武文; 高橋, 真聡, Contributor
    恒星社厚生閣, 10 Feb. 2020
    4769916434
  • 小学校で理科を教えるための理科ミニマム ～小学校教員を目指す学生と理科の苦手な現職教員のために～
    政田 洋平, Contributor
    Apr. 2018
■ Lectures, oral presentations, etc.
  • Numerical Modeling of Solar and Stellar Dynamos - Current Status and Future Perspectives -
    Youhei MASADA
    1st Asia-Pacific Conference on Plasma Physics, Sep. 2017
  • Spontaneous Formation of Surface Magnetic Structure from Dynamo-maintained Magnetic Flux: The Impact of Strong Stratification
    Youhei MASADA
    COSPAR 2016 (The 41th COSPAR Scientific Assembly : Solar and Stellar Dynamos and Magnetic Flux Emergence, COSPAR 2016 (The 41th COSPAR Scientific Assembly), Jun. 2016
  • Organization of Coherent Magnetic Fields in Turbulent Thermal Convection
    Youhei MASADA
    NASA LWS Workshop on Solar Dynamo Frontiers: Helioseismology, 3D Modeling, and Data Assimilation, Jun. 2015
■ Courses
  • 理科研究
    愛知教育大学
  • 地球環境科学
    愛知教育大学
  • 地学
    愛知教育大学
  • 科学リテラシー「やさしい天文学入門」
    愛知教育大学
  • 宇宙科学実験（60cm反射望遠鏡を使った変光星の等級決定）
    愛知教育大学
  • 宇宙科学演習
    愛知教育大学
  • 宇宙科学
    愛知教育大学
■ Affiliated academic society
  • International Astronomical Union (IAU)
  • 日本天文学会
■ Research Themes
  • 原始中性子星ダイナモ：系統的数値モデリングで探る中性子星の磁気的分岐の物理
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C)
    Aichi University of Education
    Apr. 2021 - Mar. 2024
  • 乱流超新星：自己無撞着な乱流モデルで解き明かす星の終末（研究分担者）
    JSPS KAKENHI, Grant-in-Aid for Scientific Research (B)
    Apr. 2018 - Mar. 2022
  • 太陽磁場の状態遷移：電磁流体計算で探る太陽活動のグランドミニマムへのトリガー
    JSPS KAKENHI, Grant-in-Aid for Scientific Research (C)
    Apr. 2018 - Mar. 2021
  • 平均場理論に基づく3次元太陽全球ダイナモモデルの開発
    JSPS KAKENHI, Grant-in-Aid for Scientific Research on Innovative Areas
    Apr. 2018 - Mar. 2020
  • 相補的磁気流体モデリングで迫る太陽黒点の起源
    JSPS KAKENHI, Grant-in-Aid for Young Scientists (B)
    Apr. 2015 - Mar. 2018
  • 対称性が破れた系の乱流輸送に関する基礎実験
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Challenging Exploratory Research
    National Institute for Fusion Science
    01 Apr. 2014 - 31 Mar. 2017
  • 次世代スパコンと３次元可視化技術による現実的低粘性領域での地球ダイナモ機構解明
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B)
    Kobe University
    01 Apr. 2011 - 31 Mar. 2016
  • 太陽活動の長期予報の実現へ向けた太陽タコクライン層の基礎研究
    JSPS KAKENHI, Grant-in-Aid for for Young Scientists (B)
    Apr. 2012 - Mar. 2015
■ Social Contribution Activities
  • 望遠鏡でみる活動する太陽
    lecturer
    愛知県, あいちＳＴＥＭ能力育成事業「知の探究講座」, Aug. 2015, Aug. 2018
  • 夢ナビ TALK/ライブ
    lecturer
    フロムページ, 夢ナビ TALK/ライブ 2018, 講義No.09087 地球の命運を握る太陽の「磁石」！？, Jul. 2018
  • 太陽の素顔
    lecturer
    四日市市立博物館, 四日市市立博物館宇宙塾, Aug. 2017
  • 愛知教育大学天文台一般公開（年10回開催）
    lecturer
    愛知教育大学, 愛知教育大学天文台一般公開