• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Magnetohydrodynamical processes in accretion disks and astrophysical winds by high-resolution global simulations

Research Project

Project/Area Number 22684006
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionNagoya University

Principal Investigator

SUZUKI Takeru  名古屋大学, 理学(系)研究科(研究院), 准教授 (80431782)

Project Period (FY) 2010-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥25,610,000 (Direct Cost: ¥19,700,000、Indirect Cost: ¥5,910,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2010: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Keywords磁気流体力学 / 計算物理 / 乱流 / 波動 / 降着円盤 / 太陽風 / 恒星風 / 原始惑星系円盤 / 数値シミュレーション / 宇宙物理 / 磁気流体 / 天体風
Outline of Final Research Achievements

We have carried out the following two subjects.
(1)By performing high-resolution global 3D magnetohydrodynamical (MHD) simulations for accretion disks, we point out that the temperature structure largely affects the amplification of magnetic field through the distribution of rotation frequency. Even if the ideal MHD approximation is fulfilled, the flow of the mass and the motion of the magnetic flux are different because of turbulent magnetic reconnection.
(2)By MHD simulations for active solar-type stars, we point a global instability associated with the reflection and nonlinear dissipation of Alfven waves. As a result a small change of the energy injection from the photosphere leads to a large change of the stellar wind, and we propose that the mass flux of the solar wind could be as strong as 1000 times of the present value in the past.

Report

(5 results)
  • 2014 Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (30 results)

All 2014 2013 2012 2011 2010 Other

All Journal Article (15 results) (of which Peer Reviewed: 15 results,  Acknowledgement Compliant: 7 results,  Open Access: 2 results) Presentation (14 results) (of which Invited: 10 results) Remarks (1 results)

  • [Journal Article] Driving Disk Winds and Heating Hot Coronae by MRI Turbulence2014

    • Author(s)
      Io, Yuki & Suzuki, Takeru K
    • Journal Title

      The Astrophysical Journal

      Volume: 780 Issue: 1 Pages: 46-46

    • DOI

      10.1088/0004-637x/780/1/46

    • Related Report
      2013 Annual Research Report 2012 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Ion acceleration by parallel propagating nonlinear Alfvén wave packets in a radially expanding plasma2014

    • Author(s)
      Nariyuki, Y., Umeda, T., Suzuki, T. K., & Hada, T.
    • Journal Title

      Nonlinear Processes in Geophysics

      Volume: 21 Issue: 1 Pages: 339-346

    • DOI

      10.5194/npg-21-339-2014

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetohydrodynamic Simulations of Global Accretion Disks with Vertical Magnetic Fields2014

    • Author(s)
      Suzuki, Takeru K. & Inutsuka, Shu-ichiro
    • Journal Title

      The Astrophysical Journal

      Volume: 784 Issue: 2 Pages: 121-121

    • DOI

      10.1088/0004-637x/784/2/121

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The Evolution of High-temperature Plasma in Magnetar Magnetospheres and its Implications for Giant Flares2014

    • Author(s)
      Takamoto, Makoto, Kisaka, Shota, Suzuki, Takeru K., & Terasawa, Toshio
    • Journal Title

      The Astrophysical Journal

      Volume: 787 Issue: 1 Pages: 84-84

    • DOI

      10.1088/0004-637x/787/1/84

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Connecting the Sun and the solar wind: the self-consistent transition of heating mechanisms2014

    • Author(s)
      Matsumoto, T. & Suzuki T. K.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 440 Issue: 2 Pages: 971-986

    • DOI

      10.1093/mnras/stu310

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] A signature of chromospheric activity in brown dwarfs revealed by 2.5-5.0 μm AKARI spectra2014

    • Author(s)
      Satoko Sorahana, Takeru K. Suzuki, Issei Yamamura
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 440 Issue: 4 Pages: 3675-3684

    • DOI

      10.1093/mnras/stu479

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Atmospheric Escape by Magnetically Driven Wind from Gaseous Planets2014

    • Author(s)
      Tanaka, Yuki A., Suzuki, Takeru K., & Inutsuka, Shu-ichiro
    • Journal Title

      The Astrophysical Journal

      Volume: 792 Issue: 1 Pages: 18-18

    • DOI

      10.1088/0004-637x/792/1/18

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Saturation of Stellar Winds from Young Suns2013

    • Author(s)
      Suzuki, T. K., Imada, S., Kataoka, R., Kato, Y., Matsumoto, T., Miyahara, H., & Tsuneta, S.
    • Journal Title

      Publication of Astronomical Society of Japan

      Volume: 65 Issue: 5 Pages: 98-98

    • DOI

      10.1093/pasj/65.5.98

    • Related Report
      2013 Annual Research Report 2012 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Evolution of solar-type stellar winds2013

    • Author(s)
      Suzuki, T. K.
    • Journal Title

      Astronomische Nachrichten

      Volume: 334 Issue: 1-2 Pages: 81-84

    • DOI

      10.1002/asna.201211751

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Connecting the Sun and the Solar Wind : The First 2.5 Dimensional Self-consistent MHD Simulation under the Alfven Wave Scenario2012

    • Author(s)
      松本琢磨、鈴木建
    • Journal Title

      The Astrophysical Journal

      Volume: 749 Issue: 1 Pages: 8-8

    • DOI

      10.1088/0004-637x/749/1/8

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Noble gas isotopic fractionation between solar wind and the Sun, and implications for Genesis solar wind oxygen measurements2012

    • Author(s)
      Ozima, M, Suzuki, T. K., Yamada, A., & Podosek, F. A.
    • Journal Title

      Meteoritics & Planetary Science

      Volume: 47 Issue: 12 Pages: 2049-2055

    • DOI

      10.1111/j.1945-5100.2012.01421.x

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solar wind and its evolution2012

    • Author(s)
      Suzuki, T. K.
    • Journal Title

      Earth, Planets and Space

      Volume: 64 Issue: 2 Pages: 201-206

    • DOI

      10.5047/eps.2011.04.012

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] self-consistent Simulations of Alfven Wave Driven Winds from the Sun and Stars2011

    • Author(s)
      Suzuki, T. K.
    • Journal Title

      Space Science Reviews

      Volume: 158 Issue: 2-4 Pages: 339-363

    • DOI

      10.1007/s11214-010-9709-0

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Protoplanetary Disk Winds via Magnetorotational Instability : Formation of an Inner Hole and a Crucial Assist for Planet Formation2010

    • Author(s)
      Suzuki, T.K., Muto, T., Inutsuka, S.
    • Journal Title

      Astrophysical Journal

      Volume: 718 Pages: 1289-1304

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two-dimensional Study of the Propagation of Planetary Wake and the Indication of Gap Opening in an Inviscid Protoplanetary Disk2010

    • Author(s)
      Muto, T., Suzuki, T.K., Inutsuka, S.
    • Journal Title

      Astrophysical Journal

      Volume: 724 Pages: 448-468

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] What determines properties of the solar wind ?2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      SCOSTEP 13th Quadrennial Solar-Terrestrial Physics Symposium
    • Place of Presentation
      西安、 中国
    • Year and Date
      2014-10-12 – 2014-10-18
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Alfv´en wave-driven solar wind during very active phases2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      AGU Chapmann Conference on Low-frequency Waves in Space Plasmas
    • Place of Presentation
      Jeju island, South Korea
    • Year and Date
      2014-08-31 – 2014-09-05
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Disk winds driven by MRI –some aspects and applications–2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      Non-ideal MHD, Stability, and Dissipation in Protoplanetary Disks
    • Place of Presentation
      Copenhagen, Denmark
    • Year and Date
      2014-08-04 – 2014-08-08
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Accretion Disk Winds by MRI Turbulence2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      Astronum 2014, 9th Annual Internaltional Conference on Numerical Modeling of Space Plasma Flows
    • Place of Presentation
      Long Beach, California, USA
    • Year and Date
      2014-06-23 – 2014-06-27
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Accretion Disk Winds by MRI Turbulence2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      MR2014; US–Japan Workshop on Magnetic Reconnection
    • Place of Presentation
      東京
    • Year and Date
      2014-05-20 – 2014-05-24
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Saturation of Stellar Winds from Young Suns2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      Huntsville Workshop 2014 –Solar and Stellar Processes from the Chromosphere to the Outer Corona–
    • Place of Presentation
      Orkando, Florida, USA
    • Year and Date
      2014-03-23 – 2014-03-27
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Saturation of Stellar Winds from Young Suns2014

    • Author(s)
      Suzuki, T. K.
    • Organizer
      Huntsville Workshop 2014, Solar and Stellar Processes from the chromosphere to the outer corona
    • Place of Presentation
      Orlando, Florida, USA
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Evolution of solar-type stellar winds2012

    • Author(s)
      Suzuki, T. K.
    • Organizer
      Cool Stars 17
    • Place of Presentation
      Barcelona, Spain
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
  • [Presentation] Physics and evolution of the stellar winds from low to intermediate stars2012

    • Author(s)
      Suzuki, T. K.
    • Organizer
      IAU General Assembly Special Session 10
    • Place of Presentation
      Beijing, China
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] Evolution of Solar-type Stellar Wind2012

    • Author(s)
      Suzuki, T. K.
    • Organizer
      AOGS-AGU Joint Assemby
    • Place of Presentation
      Singapore
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
  • [Presentation] Evolution and saturation of solar wind and properties of wave and turbulence2012

    • Author(s)
      Suzuki, T. K.
    • Organizer
      Turbulence Cascase in the Solar Wind: Anisotoropy and Dissipation
    • Place of Presentation
      Paris, France
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] Waves and turbulences in solar and stellar atmosphere and wind2012

    • Author(s)
      Suzuki, T. K.
    • Organizer
      International Toki Conference 22: Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
    • Place of Presentation
      Toki, Gifu, Japan
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] Evolution from coronal wind to structured chromospheric wind2012

    • Author(s)
      Suzuki, T. K.
    • Organizer
      New Quests for Stellar Astrophysics III
    • Place of Presentation
      Puerto Vallarta, Mexico
    • Related Report
      2011 Annual Research Report
  • [Presentation] Solar Wind and Its Evolution2010

    • Author(s)
      Suzuki, T.K.
    • Organizer
      5th Alfven Conference on Plasma Interaction with Non-magnetized Planets/Moons and its Influence on Planetary Evolution
    • Place of Presentation
      北海道大学(札幌市)
    • Year and Date
      2010-10-04
    • Related Report
      2010 Annual Research Report
  • [Remarks] 個人web

    • Related Report
      2013 Annual Research Report

URL: 

Published: 2010-08-23   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi