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Yokoyama, Takaaki

Graduate School of Science Professor

Yokoyama, Takaaki
list
    Last Updated :2022/11/23

    Basic Information

    Affiliated programs (koza)

    • Graduate School of Science, 物理学・宇宙物理学専攻 理論天体物理学講座, 教授

    Faculty

    • 理学部

    Professional Memberships

    • From Sep. 2012, To Present
      International Astronomical Union
    • From 1994, To Present
      Astronomical Society of Japan

    Academic Degree

    • 博士(理学)(総合研究大学院大学)
    • 修士(工学)(京都大学)

    ID,URL

    researchmap URL

    list
      Last Updated :2022/11/23

      Research

      Research Interests

      • astronomical plasma
      • magnetohydrodynamics
      • plasma
      • Sun
      • stellar physics

      Research Areas

      • Natural sciences, Astronomy, 太陽天体プラズマ物理学

      Papers

      • One solar-cycle observations of prominence activities using the Nobeyama Radioheliograph 1992-2004
        M Shimojo; T Yokoyama; A Asai; H Nakajima; K Shibasaki
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Feb. 2006, Peer-reviewed
      • The nonlinear alfvén wave model for solar coronal heating and nanoflares
        Satoshi Moriyasu; Takahiro Kudoh; Takaaki Yokoyama; Kazunari Shibata
        Astrophysical Journal, 20 Jan. 2004
      • Magnetic reconnection triggered by the Parker instability in the galaxy: Two-dimensional numerical magnetohydrodynamic simulations and application to the origin of X-ray gas in the Galactic halo
        Syuniti Tanuma; Takaaki Yokoyama; Takahiro Kudoh; Kazunari Shibata
        Astrophysical Journal, 01 Jan. 2003, Peer-reviewed
      • Difference between spatial distributions of the H alpha kernels and hard X-ray sources in a solar flare
        A Asai; S Masuda; T Yokoyama; M Shimojo; H Isobe; H Kurokawa; K Shibata
        ASTROPHYSICAL JOURNAL, Oct. 2002, Peer-reviewed
      • The Solar-C_EUVST mission: the latest status
        Toshifumi Shimizu; Shinsuke Imada; Tomoko Kawate; Yoshinori Suematsu; Hirohisa Hara; Toshihiro Tsuzuki; Yukio Katsukawa; Masahito Kubo; Ryoko Ishikawa; Tetsuya Watanabe; Shin Toriumi; Kiyoshi Ichimoto; Shin'ichi Nagata; Takahiro Hasegawa; Takaaki Yokoyama; Kyoko Watanabe; Katsuhiko Tsuno; Clarence M. Korendyke; Harry P. Warren; Bart De Pontieu; Paul Boerner; Sami K. Solanki; Luca Teriaca; Udo Schühle; Sarah Matthews; David Long; William Thomas; Barry Hancock; Hamish Reid; Andrzej Fludra; Frederic Auchere; Vincenzo Andretta; Giampiero Naletto; Luca Poletto; Louise Harra
        Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 13 Dec. 2020
      • Inverse First Ionization Potential Effects in Giant Solar Flares Found from Earth X-Ray Albedo with Suzaku/XIS
        Satoru Katsuda; Masanori Ohno; Koji Mori; Tatsuhiko Beppu; Yoshiaki Kanemaru; Makoto S. Tashiro; Yukikatsu Terada; Kosuke Sato; Kae Morita; Hikari Sagara; Futa Ogawa; Haruya Takahashi; Hiroshi Murakami; Masayoshi Nobukawa; Hiroshi Tsunemi; Kiyoshi Hayashida; Hironori Matsumoto; Hirofumi Noda; Hiroshi Nakajima; Yuichiro Ezoe; Yohko Tsuboi; Yoshitomo Maeda; Takaaki Yokoyama; Noriyuki Narukage
        ASTROPHYSICAL JOURNAL, Mar. 2020
      • Simulation of Alfven Wave Propagation in the Magnetic Chromosphere with Radiative Loss: Effects of Nonlinear Mode Coupling on Chromospheric Heating
        Yikang Wang; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Mar. 2020
      • Estimating the Temperature and Density of a Spicule from 100 GHz Data Obtained with ALMA
        Masumi Shimojo; Tomoko Kawate; Takenori J. Okamoto; Takaaki Yokoyama; Noriyuki Narukagel; Taro Sakao; Kazumasa Iwai; Gregory D. Fleishman; Gazunari Shibatas
        ASTROPHYSICAL JOURNAL LETTERS, Jan. 2020
      • Three-dimensional Simulation of the Fast Solar Wind Driven by Compressible Magnetohydrodynamic Turbulence
        Munehito Shoda; Takeru Ken Suzuki; Mahboubeh Asgari-Targhi; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL LETTERS, Jul. 2019
      • Diffusion regions and 3D energy mode development in spontaneous reconnection
        Shuoyang Wang; Takaaki Yokoyama
        PHYSICS OF PLASMAS, Jul. 2019
      • Observations of photospheric magnetic structure below a dark filament using the Hinode Spectro-Polarimeter
        Takaaki Yokoyama; Yukio Katsukawa; Masumi Shimojo
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Apr. 2019
      • The Solar-C_EUVST mission
        Toshifumi Shimizu; Shinsuke Imada; Tomoko Kawate; Kiyoshi Ichimoto; Yoshinori Suematsu; Hirohisa Hara; Yukio Katsukawa; Masahito Kubo; Shin Toriumi; Tetsuya Watanabe; Takaaki Yokoyama; Clarence M. Korendyke; Harry Warren; Ted Tarbell; Bart De Pontieu; Sami Solanki; Luca Teriaca; Udo Schuehle; Louise Harra; Sarah Matthews; A. Fludra; F. Auchere; V. Andretta; G. Naletto; A. Zhukov
        UV, X-RAY, AND GAMMA-RAY SPACE INSTRUMENTATION FOR ASTRONOMY XXI, 2019
      • Impact of Dynamic State on the Mass Condensation Rate of Solar Prominences
        Takafumi Kaneko; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Dec. 2018
      • ALMA Observations of the Solar Chromosphere on the Polar Limb
        Takaaki Yokoyama; Masumi Shimojo; Takenori J. Okamoto; Haruhisa Iijima
        ASTROPHYSICAL JOURNAL, Aug. 2018
      • Anisotropic Magnetohydrodynamic Turbulence Driven by Parametric Decay Instability: The Onset of Phase Mixing and Alfven Wave Turbulence
        Munehito Shoda; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL LETTERS, Jun. 2018
      • Frequency-dependent Alfven-wave Propagation in the Solar Wind: Onset and Suppression of Parametric Decay Instability
        Munehito Shoda; Takaaki Yokoyama; Takeru K. Suzuki
        ASTROPHYSICAL JOURNAL, Jun. 2018
      • A Self-consistent Model of the Coronal Heating and Solar Wind Acceleration Including Compressible and Incompressible Heating Processes
        Munehito Shoda; Takaaki Yokoyama; Takeru K. Suzuki
        ASTROPHYSICAL JOURNAL, Feb. 2018
      • High-frequency Spicule Oscillations Generated via Mode Conversion
        Munehito Shoda; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Feb. 2018
      • Reconnection-Condensation Model for Solar Prominence Formation
        Takafumi Kaneko; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Aug. 2017
      • Non-kinematic Flux-transport Dynamos Including the Effects of Diffusivity Quenching
        Chiaki Ichimura; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Apr. 2017
      • THREE-DIMENSIONAL MHD MAGNETIC RECONNECTION SIMULATIONS WITH A FINITE GUIDE FIELD: PROPOSAL OF THE SHOCK-EVOKING POSITIVE-FEEDBACK MODEL
        Shuoyang Wang; Takaaki Yokoyama; Hiroaki Isobe
        ASTROPHYSICAL JOURNAL, Sep. 2015
      • RESONANT ABSORPTION OF TRANSVERSE OSCILLATIONS AND ASSOCIATED HEATING IN A SOLAR PROMINENCE. I. OBSERVATIONAL ASPECTS
        Takenori J. Okamoto; Patrick Antolin; Bart de Pontieu; Han Uitenbroek; Tom van Doorsselaere; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Aug. 2015
      • SIMULATION STUDY OF SOLAR PLASMA ERUPTIONS CAUSED BY INTERACTIONS BETWEEN EMERGING FLUX AND CORONAL ARCADE FIELDS
        Takafumi Kaneko; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Nov. 2014
      • STATISTICAL ANALYSIS OF THE HORIZONTAL DIVERGENT FLOW IN EMERGING SOLAR ACTIVE REGIONS
        Shin Toriumi; Keiji Hayashi; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Oct. 2014
      • PROBING THE SHALLOW CONVECTION ZONE: RISING MOTION OF SUBSURFACE MAGNETIC FIELDS IN THE SOLAR ACTIVE REGION
        Shin Toriumi; Stathis Ilonidis; Takashi Sekii; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL LETTERS, Jun. 2013
      • TEMPORAL AND SPATIAL ANALYSES OF SPECTRAL INDICES OF NONTHERMAL EMISSIONS DERIVED FROM HARD X-RAYS AND MICROWAVES
        Ayumi Asai; Junko Kiyohara; Hiroyuki Takasaki; Noriyuki Narukage; Takaaki Yokoyama; Satoshi Masuda; Masumi Shimojo; Hiroshi Nakajima
        ASTROPHYSICAL JOURNAL, Feb. 2013
      • Numerical Simulation and SOT Magnetogram Analysis of the Small-scale Magnetic Elements in a Solar Emerging Flux Region
        Shin Toriumi; Takaaki Yokoyama
        FIFTH HINODE SCIENCE MEETING: EXPLORING THE ACTIVE SUN, 2012
      • Numerical Experiments on the Two-Step Emergence of Solar Magnetic Fields from the Convective Layer
        Shin Toriumi; Takaaki Yokoyama
        HINODE-3: THE 3RD HINODE SCIENCE MEETING, 2012
      • Dependence of the Magnetic Energy of Solar Active Regions on the Twist Intensity of the Initial Flux Tubes
        Shin Toriumi; Takehiro Miyagoshi; Takaaki Yokoyama; Hiroaki Isobe; Kazunari Shibata
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Apr. 2011
      • Generation of Alfven Waves by Magnetic Reconnection
        Hiromitsu Kigure; Kunio Takahashi; Kazunari Shibata; Takaaki Yokoyama; Satoshi Nozawa
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Aug. 2010
      • PROMINENCE FORMATION ASSOCIATED WITH AN EMERGING HELICAL FLUX ROPE
        Takenori J. Okamoto; Saku Tsuneta; Bruce W. Lites; Masahito Kubo; Takaaki Yokoyama; Thomas E. Berger; Kiyoshi Ichimoto; Yukio Katsukawa; Shin'ichi Nagata; Kazunari Shibata; Toshifumi Shimizu; Richard A. Shine; Yoshinori Suematsu; Theodore D. Tarbell; Alan M. Title
        ASTROPHYSICAL JOURNAL, May 2009
      • IMAGING SPECTROSCOPY ON PREFLARE CORONAL NONTHERMAL SOURCES ASSOCIATED WITH THE 2002 JULY 23 FLARE
        Ayumi Asai; Hiroshi Nakajima; Masumi Shimojo; Takaaki Yokoyama; Satoshi Masuda; Saem Krucker
        ASTROPHYSICAL JOURNAL, Apr. 2009
      • Formation of solar magnetic flux tubes with kilogauss field strength induced by convective instability
        Shin'ichi Nagata; Saku Tsuneta; Yoshinori Suematsu; Kiyoshi Ichimoto; Yukio Katsukawa; Toshifumi Shimizu; Takaaki Yokoyama; Theodore D. Tarbell; Bruce W. Lites; Richard A. Shine; Thomas E. Berger; Alan M. Title; Luis R. Bellot Rubio; David Orozco Suares
        ASTROPHYSICAL JOURNAL LETTERS, Apr. 2008
      • Emergence of a helical flux rope under an active region prominence
        Takenori J. Okamoto; Saku Tsuneta; Bruce W. Lites; Masahito Kubo; Takaaki Yokoyama; Thomas E. Berger; Kiyoshi Ichimoto; Yukio Katsukawa; Shin'ichi Nagata; Kazunari Shibata; Toshifumi Shimizu; Richard A. Shine; Yoshinori Suematsu; Theodore D. Tarbell; Alan M. Title
        ASTROPHYSICAL JOURNAL LETTERS, Feb. 2008
      • Active Region Microflares From Hinode and RHESSI
        Cristina Chifor; Iain G. Hannah; Helen E. Mason; Hiroaki Isobe; Takaaki Yokoyama; Peter R. Young; Durgesh Tripathi
        FIRST RESULTS FROM HINODE, 2008
      • Initial results on line-of-sight field calibrations of SP/NFI data taken by SOT/Hinode
        Jongchul Chae; Yong-Jae Moon; Young-Deuk Park; Kiyoshi Ichimoto; Takashi Sakurai; Yoshinori Suematsu; Saku Tsuneta; Yukio Katsukawa; Toshifumi Shimizu; Richard A. Shine; Theodore D. Tarbell; Alan M. Title; Bruce Lites; Masahito Kubo; Shin'ichi Nagata; Takaaki Yokoyama
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Nov. 2007
      • Fine-scale structures of the evershed effect observed by the Solar Optical Telescope aboard Hinode
        Kiyoshi Ichimoto; Richard A. Shine; Bruce Lites; Masahitc Kubo; Toshifumi Shimizu; Yoshinori Suematsu; Saku Tsuneta; Yukio Katsukawa; Theodore D. Tarbell; Alan M. Title; Shin'ichi Nagata; Takaaki Yokoyama; Masumi Shimojo
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Nov. 2007
      • Formation process of a light bridge revealed with the Hinode Solar Optical Telescope
        Yukio Katsukawa; Takaaki Yokoyama; Thomas E. Berger; Kiyoshi Ichimoto; Masahito Kubo; Bruce Lites; Shin'ichi Nagata; Toshifumi Shimizu; Richard A. Shine; Yoshinori Suematsu; Theodore D. Tarbell; Alan M. Title; Saku Tsuneta
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Nov. 2007
      • Hinode observations of a vector magnetic field change associated with a flare on 2006 December 13
        Masahito Kubo; Takaaki Yokoyama; Yukio Katsukawa; Bruce Lites; Saku Tsuneta; Yoshinori Suematsu; Kiyoshi Ichimoto; Toshifumi Shimizu; Shin'ichi Nagata; Theodore D. Tarbell; Richard A. Shine; Alan M. Title; David Elmore
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Nov. 2007
      • Hinode SP vector magnetogram of AR 10930 and its cross-comparison with MDI
        Yong-Jae Moon; Yeon-Han Kim; Young-Deuk Park; Kiyoshi Ichimoto; Takashi Sakurai; Jongchul Chae; Kyung Suk Cho; Suchan Bong; Yoshinori Suematsu; Saku Tsuneta; Yukio Katsukawa; Masumi Shimojo; Toshifumi Shimizu; Richard A. Shine; Theodore D. Tarbell; Alan M. Title; Bruce Lites; Masahito Kubo; Shin'ichi Nagata; Takaaki Yokoyama
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Nov. 2007
      • Triggering mechanism for the filament eruption on 2005 September 13 in NOAA active region 10808
        Kaori Nagashima; Hiroaki Isobe; Takaaki Yokoyama; Takako T. Ishii; Takenori J. Okamoto; Kazunari Shibata
        ASTROPHYSICAL JOURNAL, Oct. 2007
      • Imaging spectroscopy of a gradual hardening flare on 2000 November 25
        Hiroyuki Takasaki; Junko Kiyohara; Ayumi Asai; Hiroshi Nakajima; Takaaki Yokoyama; Satoshi Masuda; Jun Sato; Takeo Kosugi
        ASTROPHYSICAL JOURNAL, Jun. 2007
      • The origin of ripples in cool cores of galaxy clusters: Heating by magnetohydrodynamic waves?
        Yutaka Fujita; Takeru K. Suzuki; Takahiro Kudoh; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Apr. 2007
      • Evolution of H alpha kernels and energy release in an X-class flare
        Ayumi Asai; Takaaki Yokoyama; Masumi Shimojo; Satoshi Masuda; Kazunari Shibata
        NEW SOLAR PHYSICS WITH SOLAR-B MISSION, 2007
      • Three-dimensional MHD Simulations of emerging flux and associated magnetic reconnection
        Hiroaki Isobe; Takehiro Miyagoshi; Kazunari Shibata; Takaaki Yokoyama
        NEW SOLAR PHYSICS WITH SOLAR-B MISSION, 2007
      • Quantitative analysis of nonthermal electrons in impulsive hard X-ray flares
        Takashi Minoshima; Takaaki Yokoyama
        NEW SOLAR PHYSICS WITH SOLAR-B MISSION, 2007
      • Magnetohydrodynamic numerical simulations of emerging flux tube for studying effects of twist intensity
        Takehiro Miyagoshi; Hiroaki Isobe; Takaaki Yokoyama; Kazunari Shibata
        NEW SOLAR PHYSICS WITH SOLAR-B MISSION, 2007
      • Three-dimensional filament eruption driven by an emerging flux
        Shun Notoya; Takaaki Yokoyama; Kanya Kusano; Takashi Sakurai; Takehiro Miyagoshi; Hiroaki Isobe; Tetsuya Yamamoto
        NEW SOLAR PHYSICS WITH SOLAR-B MISSION, 2007
      • Helicity injection in regions of various magnetic fluxes
        Tetsuya T. Yamamoto; Takashi Sakurai; Kanya Kusano; Takaaki Yokoyama
        NEW SOLAR PHYSICS WITH SOLAR-B MISSION, 2007
      • Statistical study of the reconnection rate in solar flares observed with Yohkoh SXT
        Kaori Nagashima; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Aug. 2006
      • Two-dimensional magnetohydrodynamic simulations of relativistic magnetic reconnection
        Naoyuki Watanabe; Takaaki Yokoyama
        ASTROPHYSICAL JOURNAL, Aug. 2006
      • Flare ribbon expansion and energy release
        Ayumi Asai; Takaaki Yokoyama; Masumi Shimojo
        JOURNAL OF ASTROPHYSICS AND ASTRONOMY, Jun. 2006
      • Three-dimensional simulation of solar emerging flux using the earth simulator I. Magnetic Rayleigh-Taylor instability at the top of the emerging flux as the origin of filamentary structure
        Hiroaki Isobe; Takehiro Miyagoshi; Kazunari Shibata; Takaaki Yokoyama
        PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Apr. 2006
      • Magnetohydrodynamic numerical simulations of emerging flux and associated active phenomena in the solar atmosphere
        Takehiro Miyagoshi; Hiroaki Isobe; Takaaki Yokoyama; Kazunari Shibata
        NUMERICAL MODELING OF SPACE PLASMA FLOWS: ASTRONUM-2006, 2006
      • Reconnection rate in the decay phase of a long duration event flare on 1997 May 12
        Hiroaki Isobe; Takaaki Yokoyama; Masumi Shimojo; Taro Morimoto; Hiromichi Kozu; E. T.O. Shigeru; Noriyuki Narukage; Kazunari Shibata
        Astrophysical Journal, 10 Feb. 2002

      Misc.

      • Two-Dimensional MHD Numerical Simulations of Magnetic Reconnection Triggered by A Supernova Shock in Interstellar Medium, Generation of X-Ray Gas in Galaxy
        Syuniti Tanuma; Takaaki Yokoyama; Takahiro Kudoh; Kazunari Shibata
        ApJ, 06 Sep. 2000
      • Coronal X-Ray Jets Observed with the Yohkoh Soft X-Ray Telescope
        SHIBATA Kazunari; YOKOYAMA Takaaki; SHIMOJO Masumi
        Journal of geomagnetism and geoelectricity, Jan. 1996
      • 25pXA-6 Rayleigh-Taylor instability and patchy magnetic reconnection in solar emerging flux region
        Isobe Hiroaki; Miyagoshi Takehiro; Shibata Kazunari; Yokoyama Takaaki
        Meeting abstracts of the Physical Society of Japan, 04 Mar. 2005
      • 25pXA-5 Emerging process of a twisted magnetic flux tube from the photosphere to the corona
        Miyagoshi Takehiro; Isobe Hiroaki; Yokoyama Takaaki; Shibata Kazunari
        Meeting abstracts of the Physical Society of Japan, 04 Mar. 2005
      • Hydrodynamic Modeling of a Flare Loop Connecting the Accretion Disk and Central Core of Young Stellar Objects
        ISOBE Hiroaki; SHIBATA Kazunari; YOKOYAMA Takaaki; IMANISHI Kensuke
        Publications of the Astronomical Society of Japan, 25 Oct. 2003
      • Three-Dimensional Magnetohydrodynamic Numerical Simulations of Coronal Loop Oscillations Associated with Flares
        MIYAGOSHI Takehiro; YOKOYAMA Takaaki; SHIMOJO Masumi
        Publications of the Astronomical Society of Japan, 25 Feb. 2004
      • The Two-step Emergence of the Magnetic Flux Tube at the Solar Convection Zone and the Photosphere
        Toriumi Shin; Yokoyama Takaaki
        日本流体力学会年会講演論文集, 2009
      • MHD Simulations of a Current Sheet with a Finite Resistivity Perturvations
        Yokoyama T.; Isobe H.
        日本流体力学会年会講演論文集, 2008
      • AM06-19-002 MHD simulation of solar emerging flux region using the Earth Simulator
        Isobe Hiroaki; Miyagoshi Takehiro; Shibata Kazunari; Yokoyama Takaaki
        日本流体力学会年会講演論文集, 2006
      • AM05-08-008 Three-dimensional magnetic reconnection driven by an emerging flux tube with coronal arcade field in the Sun
        Notoya Shun; Yokoyama Takaaki; Kusano Kanya; Sakurai Takashi; Miyagoshi Takahiro; Isobe Hiroaki; Yamamoto Tetsuya
        日本流体力学会年会講演論文集, 2005
      • D335 MHD Numerical Simulations of Solar Coronal Jets
        MIYAGOSHI Takehiro; YOKOYAMA Takaaki; ISOBE Hiroaki; SHIBATA Kazunari
        日本流体力学会年会講演論文集, 2004
      • MHD Simulations of a Current Sheet with a Finite Resistivity Perturvations : Guide-field effect
        Yokoyama T.; Isobe H.
        日本流体力学会年会講演論文集, 2010
      • Two-dimensional Magnetohydrodynamic Simulations on the Solar Flux Emergence
        Toriumi Shin; Yokoyama Takaaki
        日本流体力学会年会講演論文集, 2010
      • 30pSA-3 MHD Simulations of a current sheet with initial perturbation on resistivity
        Yokoyama T.; Isobe H.
        Meeting abstracts of the Physical Society of Japan, 03 Mar. 2009

      External funds: Kakenhi

      • Understanding and realization of advanced prediction for solar explosions with the integrated model including from stellar convection zone to interplanetary space
        Grant-in-Aid for Scientific Research (A)
        Medium-sized Section 16:Astronomy and related fields
        Nagoya University
        草野 完也
        From 05 Apr. 2021, To 31 Mar. 2026, Granted
        太陽;ダイナモ;フレア;CME;シミュレーション
      • Theoretical studies on evolution of stellar coronae
        Grant-in-Aid for Scientific Research (B)
        Basic Section 16010:Astronomy-related
        Kyoto University;The University of Tokyo
        横山 央明
        From 01 Apr. 2021, To 31 Mar. 2024, Granted
        太陽;恒星;コロナ;ダイナモ
      • New Physical Picture of Plasma Heating Revealed by Advanced Large Solar Telescope DKIST
        Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
        Medium-sized Section 16:Astronomy and related fields
        Japan Aerospace EXploration Agency
        鳥海 森
        From 27 Oct. 2020, To 31 Mar. 2024, Granted
        超大型太陽望遠鏡DKIST;太陽観測衛星ひので;光球・彩層磁場;輻射磁気流体シミュレーション;偏光分光観測
      • Formation of X-ray Emitting Regions and the Origin of Time Variabilities in Accretion Flow onto a Supermassive Black Hole
        Grant-in-Aid for Scientific Research (B)
        Chiba University
        Ryoji MATSUMOTO
        From 01 Apr. 2016, To 31 Mar. 2019, Project Closed
        理論天文学;活動銀河中心核;X線天文学;ブラックホール;磁気流体シミュレーション;宇宙ジェット;状態遷移;輻射スペクトル;X線天文学;磁気リコネクション
      • Theoretical study on the dynamics and heating in the solar chromosphere
        Grant-in-Aid for Scientific Research (B)
        The University of Tokyo
        Takaaki Yokoyama
        From 01 Apr. 2015, To 31 Mar. 2020, Project Closed
        天文;太陽物理学;プラズマ
      • Dynamo mechanism in galaxies: nonlinear dynamics driven by cosmic rays and magnetic fields
        Grant-in-Aid for Scientific Research (C)
        National Astronomical Observatory of Japan
        Takahiro KUDOH
        From 28 Apr. 2011, To 31 Mar. 2015, Project Closed
        天文;宇宙物理;理論天文学;流体力学;流体
      • Research of generation mechanisms and dynamics of solar magnetic fields
        Grant-in-Aid for Scientific Research (B)
        The University of Tokyo
        Takaaki YOKOYAMA
        From 01 Apr. 2011, To 31 Mar. 2015, Project Closed
        天文;太陽物理学;プラズマ
      • Studies of State Transitions in Black Hole Candidates by Collaboration between Magnetohydrodynamic Simulations and X-ray Observations
        Grant-in-Aid for Scientific Research (B)
        Chiba University
        Ryoji MATSUMOTO
        From 01 Apr. 2011, To 31 Mar. 2014, Project Closed
        理論天文学;X線天文学;降着円盤;磁気流体力学;シミュレーション;ブラックホール;宇宙ジェット;天体プラズマ;X線天文学;潮汐破壊;幅射流体力学;数値天体物理学
      • Developments of Numerical Magnetohydrodynamic Simulators of Accretion Disks with Application to Time Variabilities and Jet Formation
        Grant-in-Aid for Scientific Research (B)
        Chiba University
        Ryoji MATSUMOTO
        From 01 Apr. 2008, To 31 Mar. 2011, Project Closed
        理論天文学;数値天体物理学;磁気流体力学;降着円盤;宇宙ジェット;ブラックホール;輻射流体力学;X線天文学
      • Studies of Explosive Processes of the Hot Plasmas in the Sun and Astronomical Object
        Grant-in-Aid for Scientific Research (C)
        The University of Tokyo
        Takaaki YOKOYAMA
        From 01 Apr. 2006, To 31 Mar. 2010, Project Closed
        太陽物理学;天文;プラズマ・核融合;太陽;天体プラズマ;コロナ;磁気リコネクション;X線
      • 電磁流体力学による太陽活動の統合シミュレーション
        Grant-in-Aid for Scientific Research (B)
        Kyoto University
        柴田 一成
        From 01 Apr. 2004, To 31 Mar. 2007, Project Closed
        フレア;コロナ質量放出;磁気リコネクション;シミュレーション;電磁流体力学;ジェット;コロナ加熱;宇宙天気
      • Research on the Formation and Activity of Galactic Nuclear Gas Disks Including Magnetohydrodynamical Processes
        Grant-in-Aid for Scientific Research (B)
        Chiba University
        Ryoji MATSUMOTO
        From 01 Apr. 2004, To 31 Mar. 2006, Project Closed
        銀河円盤;降着円盤;磁気流体力学;数値実験;活動銀河中心核;宇宙ジェット;自己重力;銀河ダイナモ, Galactic Disk;Accretion Disk;Magnetohydrodynamics;Numerical Simulation;Active Galactic Nuclei;Astrophysical Jets;Self Gravity;Galactic Dynamo
      • 天体高温プラズマ活動現象の、磁気エネルギー蓄積過程と解放過程との研究
        Grant-in-Aid for Young Scientists (B)
        The University of Tokyo
        横山 央明
        From 01 Apr. 2003, To 31 Mar. 2006, Project Closed
        太陽;天体プラズマ;コロナ;磁気リコネクション;X線;天体高温プラズマ
      • 新展開を迎えた磁気リコネクション研究に関する企画調査-実験室から天体まで-
        Grant-in-Aid for Scientific Research (C)
        Kyoto University
        柴田 一成
        From 01 Apr. 2003, To 31 Mar. 2004, Project Closed
        フレア;ガンマ線バースト;磁気リコネクション;ジェット;プラズモイド;電磁流体力学;シミュレーション
      • STUDY OF SOLAR FLARE MECHANISM AND ITS APPLICATION TO GAMMA RAY BURSTS
        Grant-in-Aid for Scientific Research (C)
        KYOTO UNIVERSITY
        Kazunari SHIBATA
        From 01 Apr. 2002, To 31 Mar. 2004, Project Closed
        フレア;ガンマ線バースト;磁気リコネクション;ジェット;プラズモイド;電磁流体力学;シミュレーション, flare;gamma ray bursts;magnetic reconnection;jet;plasmoid;magnetohydrodynamics;simulation
      • Basic studies of cosmic ray shock acceleration processes
        Grant-in-Aid for Scientific Research (B)
        The University of Tokyo
        Toshio TERASAWA
        From 01 Apr. 2002, To 31 Mar. 2005, Project Closed
        衝撃波;粒子加速;太陽フレア;超強磁場中性子星;磁気圏;プラズマシート;相対論的ジェット;ブレーザー;衝撃波粒子加速;太陽コロナ加熱;磁気リコネクション;磁気ヘリシティ;地球前面定在衝撃波;サイクロトロン共鳴;スローショック;ガンマ線バースト;衝撃波交差;ピックアップイオン, shocks;particle acceleration;solar flares;magnetar;magnetosphere;plasma sheet;relativistic jets;blazars
      • 天体高温ガス加熱の磁気流体数値シミュレーション
        Grant-in-Aid for Encouragement of Young Scientists (A)
        National Astronomical Observatory of Japan
        横山 央明
        From 01 Apr. 2000, To 31 Mar. 2002, Project Closed
        プラズマ;磁気流体力学;数値シミュレーション;太陽;コロナ;磁気流体力
      • Study of Activity Mechanism in the Solar Corona Based on Realistic-Data Simulations
        Grant-in-Aid for Scientific Research (C)
        HIROSHIMA UNIVERSIlY
        Kannya KUSANO
        From 01 Apr. 2000, To 31 Mar. 2004, Project Closed
        太陽;フレア;コロナ;MHD;シミュレーション;リコネクション;磁気ヘリシティ;プラズマ;ヘリシティ;太陽磁場;不安定性, the Sun;flares;corona;MHD;simulation;reconnection;magnetic helicity;plasma
      list
        Last Updated :2022/11/23

        Education

        Teaching subject(s)

        • From 01 Apr. 2022, To 31 Mar. 2023
          Fundamental Astrophysics II (Astronomical hydro and magnetohydrodynamics)
          3314, Spring, Faculty of Science, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Physics of Solar and Cosmic Plasmas
          4048, Spring, Graduate School of Science, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Solar and Cosmic Plasmas D
          4017, Fall, Graduate School of Science, 1
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Solar and Cosmic Plasmas C
          4016, Spring, Graduate School of Science, 1
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Solar and Cosmic Plasmas A
          4014, Spring, Graduate School of Science, 1
        • From 01 Apr. 2022, To 31 Mar. 2023
          Seminar on Solar and Cosmic Plasmas B
          4015, Fall, Graduate School of Science, 1
        • From 01 Apr. 2022, To 31 Mar. 2023
          Introduction to General Astronomy
          N516, Spring, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Fundamental Physics B
          N226, Fall, Institute for Liberal Arts and Sciences, 2
        • From 01 Apr. 2022, To 31 Mar. 2023
          Special study course II(Physical Science) S2
          5251, Year-long, Faculty of Science, 12
        • From 01 Apr. 2022, To 31 Mar. 2023
          Introduction to General Astronomy
          N516, Fall, Institute for Liberal Arts and Sciences, 2
        list
          Last Updated :2022/11/23

          Administration

          School management (title, position)

          • From 01 Apr. 2022, To 31 Mar. 2024
            天文台 台長

          Faculty management (title, position)

          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科将来計画委員会委員
          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科自己点検・評価委員会委員
          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科SACRA広報・社会連携部門委員会 基金運営小委員会委員
          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科情報セキュリティ委員会委員
          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科研究科会議構成員
          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科専攻長会議構成員
          • From 01 Apr. 2022, To 31 Mar. 2023
            理学研究科危機管理委員会委員
          • From 01 May 2021, To 31 Mar. 2023
            理学研究科天文台運営協議会議員

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