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Identification of magnetohydrodynamic waves drive mechanism on the solar surface by image reconstruction technique

Research Project

Project/Area Number 19K21059
Project/Area Number (Other) 18H05878 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0204:Astronomy, earth and planetary science, and related fields
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

Oba Takayoshi  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 宇宙航空プロジェクト研究員 (10824443)

Project Period (FY) 2018-08-24 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords太陽 / 光球 / 磁場 / 偏光分光 / 対流 / 偏光 / 分光 / 画像解析 / エネルギー輸送
Outline of Research at the Start

太陽外層大気の加熱機構を解明するには,「太陽表面で生じている対流運動が,磁場にエネルギーを蓄積する」過程を捉えることが不可欠である.一方, 現状の観測機器では, 水平ガス運動を捉えるためには空間分解能が不十分であった.そこで,望遠鏡の結像性能を補正する技術を開発する.これにより,「磁場周りの水平ガス運動パターン」および「応答する磁場のダイナミクス」を初めて観測的に捉えることを目指す.

Outline of Final Research Achievements

This study aims to reveal the mechanism that drives magnetohydrodynamic wave on the solar surface. The fact in the background of the difficulty of capturing the mechanism is that any observation instruments currently available cannot spatially resolve a magnetic flux tube. We developed a technique that improves the imaging performance of the telescope with high accuracy. Our study enables to diagnose a flux tube in a fine scale, providing a detail structure of magnetic field of the fluxtube.

Academic Significance and Societal Importance of the Research Achievements

太陽において生じている動的現象の多くは, 大気中に無数に存在している微細な磁束管が駆動していると考えられている. 本研究において, これらの微細な磁束管を高空分解能・高精度で物理量診断する技術を開発した. 今後, 本手法を既存の観測データに適用することで, 磁気流体波の励起に限らず, 磁束管が駆動する様々なエネルギー解放現象について理解が進むことが期待される.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] マックス・プランク研究所(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] マックス・プランク研究所(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] マックス・プランク研究所(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Average Radial Structures of Gas Convection in the Solar Granulation2020

    • Author(s)
      T. Oba, Y. Iida, and T. Shimizu
    • Journal Title

      The Astrophysical Journal

      Volume: 890 Issue: 2 Pages: 141-141

    • DOI

      10.3847/1538-4357/ab6a90

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] TBD (招待講演のオファーを承諾しているが、現段階で講演登録がまだ始まっておらずタイトルは未定)2021

    • Author(s)
      Takayoshi Oba
    • Organizer
      Hinode-14/IRIS-11 Joint Science Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] How does the solar surface convection form the asymmetry in spectral profiles?2019

    • Author(s)
      T.Oba, Y.Iida, T.Shimizu
    • Organizer
      Hinode Science meeting 13
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 太陽光球大気における平均対流速度場構造2019

    • Author(s)
      大場崇義, 飯田佑輔, 清水敏文
    • Organizer
      プラズマ核融合学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 将来観測機器で探る光球熱対流のサイエンス2019

    • Author(s)
      大場崇義
    • Organizer
      太陽研連シンポジウム「太陽研究の将来展望」
    • Related Report
      2018 Annual Research Report

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Published: 2018-08-27   Modified: 2024-03-26  

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