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Study on the foot-point structure of black hole jets and the jet driven mechanism through polarimetric transfer calculations

Research Project

Project/Area Number 20K04026
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 16010:Astronomy-related
Research InstitutionKyoto University

Principal Investigator

Mineshige Shin  京都大学, 理学研究科, 名誉教授 (70229780)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsブラックホール / 偏波 / 電波天文学 / 輻射流体力学 / 一般相対論 / 活動銀河核 / スペクトル形成 / 磁場 / 一般相対性理論 / 偏光 / X線天文学
Outline of Research at the Start

EHT(事象の地平面望遠鏡)による、楕円銀河M87中心にある巨大ブラックホールの影の初撮影画像が世界に配信され、ブラックホール研究は新しい時代を迎えた。われわれはこの好機をとらえ、(1) ブラックホールジェットの駆動機構の解明、(2) ブラックホール降着流における磁気フレアの検出可能性、(3) 高光度降着流ダイナミクスの解明に取り組む。
このため、一般相対論的流体・輻射輸送シミュレーションを実行し、磁場構造を表す偏波画像および動画を描き、近く発表されるEHT偏波観測結果等と照合して、ジェット駆動やフレアに伴う磁場の働きを実証する。

Outline of Final Research Achievements

We performed the following simulation studies, aiming at elucidating the driving mechanism and global structure of the jet and outflow from black hole accretion flow, and the physical impacts onto its environments.
We performed general relativistic (GR) polarization radiation transfer simulations based on the GR simulation data and obtained the radio images, the linear polarization maps, and circular polarization images for several model parameters. We then developed a methodology to constrain magnetic field properties, with which we will be able to examine the justification of the MHD model for the jet eruption. We also performed radiation hydrodynamic simulations of supercritical accretion flow and found universal laws to describe the dependence of the radiation and mechanical luminosities on the accretion rate, thereby quantifying the impact to the black hole environments.

Academic Significance and Societal Importance of the Research Achievements

ブラックホールジェットの駆動機構は長年の謎である。磁場駆動説が有力だが、その直接的証拠はない。将来のEHT(事象の地平面望遠鏡)偏波観測から磁場駆動説の妥当性を議論するには、どのような直線偏光や円偏光の画像が得られるのか、明らかにすることがとても大事であり、今回の研究により、その糸口がつかめたと思う。また巨大ブラックホールから周囲へのインパクトの定量化も重要な課題であるが、10桁近いスケールの差をうめる必要がある難問である。その議論に一石を投じたのではないかと思う。
ブラックホールという存在は一般によく知られており、注目度も高い。今回の研究成果は一般向け講演会や書物を通じて共有していきたい。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (28 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (13 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 12 results,  Open Access: 4 results) Presentation (14 results)

  • [Int'l Joint Research] Peking University(中国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Probing the origin of the two-component structure of broad-line region by reverberation mapping of an extremely variable quasar2024

    • Author(s)
      Nagoshi Shumpei、Iwamuro Fumihide、Yamada Satoshi、Ueda Yoshihiro、Oikawa Yuto、Otsuka Masaaki、Isogai Keisuke、Mineshige Shin
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 529 Issue: 1 Pages: 393-408

    • DOI

      10.1093/mnras/stae319

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evolution of accretion disk structure of the black hole X-ray binary MAXI?J1820+070 during the rebrightening phase2024

    • Author(s)
      Yoshitake Tomohiro、Shidatsu Megumi、Ueda Yoshihiro、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 76 Issue: 2 Pages: 251-264

    • DOI

      10.1093/pasj/psae005

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Large-scale outflow structure and radiation properties of super-Eddington flow: Dependence on the accretion rates2022

    • Author(s)
      Yoshioka, Shogo ; Mineshige, Shin ; Ohsuga, Ken ; Kawashima, Tomohisa ; Kitaki, Takaaki
    • Journal Title

      PASJ

      Volume: 74 Issue: 6 Pages: 1378-1395

    • DOI

      10.1093/pasj/psac076

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Diverse Polarimetric Features of AGN Jets from Various Viewing Angles: Towards a Unified View2022

    • Author(s)
      Tsunetoe, Yuh; Mineshige, Shin; Kawashima, Tomohisa; Ohsuga, Ken; Akiyama, Kazunori; Takahashi, Hiroyuki R.
    • Journal Title

      Galaxies

      Volume: 10 Issue: 5 Pages: 103-113

    • DOI

      10.3390/galaxies10050103

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Investigating the Disk-Jet Structure in M87 through Flux Separation in the Linear and Circular Polarization Images2022

    • Author(s)
      Tsunetoe, Yuh; Mineshige, Shin; Kawashima, Tomohisa; Ohsuga, Ken; Akiyama, Kazunori; Takahashi, Hiroyuki R.
    • Journal Title

      ApJ

      Volume: 931 Issue: 1 Pages: 25-25

    • DOI

      10.3847/1538-4357/ac66dd

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Structure of the super-Eddington outflow and its impact on the cosmological scale2022

    • Author(s)
      Botella Ignacio、Mineshige Shin、Kitaki Takaaki、Ohsuga Ken、Kawashima Tomohisa
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 74 Issue: 2 Pages: 384-397

    • DOI

      10.1093/pasj/psac001

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The origins and impact of outflow from super-Eddington flow2021

    • Author(s)
      Kitaki Takaaki、Mineshige Shin、Ohsuga Ken、Kawashima Tomohisa
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Issue: 2 Pages: 450-466

    • DOI

      10.1093/pasj/psab011

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] What determines the unique spectra of super-Eddington accretors? Origin of optically thick and low-temperature coronae in super-Eddington accretion flows2021

    • Author(s)
      Kawanaka, Norita ; Mineshige, Shin
    • Journal Title

      Pub. Astron. Soc. Japan

      Volume: 73 Issue: 3 Pages: 630-638

    • DOI

      10.1093/pasj/psab023

    • Related Report
      2021 Research-status Report
  • [Journal Article] Variability of Comptonized X-ray spectra of a super-Eddington accretor: Approach using Boltzmann radiation transport2021

    • Author(s)
      Ogawa Takumi、Ohsuga Ken、Makino Yoshihiro、Mineshige Shin
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Issue: 3 Pages: 701-715

    • DOI

      10.1093/pasj/psab031

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Polarization images of accretion flow around supermassive black holes: Imprints of toroidal field structure2021

    • Author(s)
      Tsunetoe Yuh、Mineshige Shin、Ohsuga Ken、Kawashima Tomohisa、Akiyama Kazunori
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Issue: 4 Pages: 912-928

    • DOI

      10.1093/pasj/psab054

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hyper-Eddington accretion flows on to black holes accompanied by powerful outflows2020

    • Author(s)
      Takeo Eishun、Inayoshi Kohei、Mineshige Shin
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 497 Issue: 1 Pages: 302-317

    • DOI

      10.1093/mnras/staa1906

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Polarization imaging of M 87 jets by general relativistic radiative transfer calculation based on GRMHD simulations2020

    • Author(s)
      Tsunetoe Yuh、Mineshige Shin、Ohsuga Ken、Kawashima Tomohisa、Akiyama Kazunori
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 72 Issue: 2

    • DOI

      10.1093/pasj/psaa008

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Thermal-viscous instability in tilted accretion disks: A possible application to IW Andromeda-type dwarf novae2020

    • Author(s)
      Kimura Mariko、Osaki Yoji、Kato Taichi、Mineshige Shin
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: not yet determined Issue: 2 Pages: 1-23

    • DOI

      10.1093/pasj/psz144

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 活動銀河核ジェット根元の偏光フリップ・反転から探る非熱的電子2024

    • Author(s)
      恒任優
    • Organizer
      日本天文学会2024年春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 大質量ブラックホールにおける超臨界降着流のアウトフローと輻射特性2023

    • Author(s)
      芳岡尚悟
    • Organizer
      日本天文学会2023年秋季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 大質量ブラックホールへの超臨界降着流と大局的アウトフロー構造2023

    • Author(s)
      芳岡尚悟
    • Organizer
      日本天文学会春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 活動銀河核の軟X線超過の起源:温かいコロナの加熱とその安定性2023

    • Author(s)
      川中宣太
    • Organizer
      日本天文学会春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 銀河系中心Sgr A*の偏光画像から探る磁場構造、および活動銀河核ジェット駆動機構解明へのシナジー2022

    • Author(s)
      恒任優
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 超臨界降着流からのアウトフロー;運動学的光度の質量降着率依存性とその起源2022

    • Author(s)
      芳岡尚悟
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 活動銀河核の軟X線超過の起源としての温かいコロナモデル2022

    • Author(s)
      川中宣太
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 直線偏光・円偏光画像から探る、活動銀河核M87 の ジェットー円盤構造2022

    • Author(s)
      恒任 優
    • Organizer
      日本天文学会2022年春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 超臨界降着流からのアウトフローの特性2022

    • Author(s)
      芳岡尚悟
    • Organizer
      日本天文学会2022年春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] ブラックホール直近領域の偏光画像から探る活動銀河核ジェッ トの駆動磁場構造2021

    • Author(s)
      恒任 優
    • Organizer
      つくば宇宙フォーラム
    • Related Report
      2021 Research-status Report
  • [Presentation] 一般相対論的ボルツマン輻射輸送による超臨界降着流の輻射スペクトル計算2021

    • Author(s)
      小川拓未
    • Organizer
      日本天文学会2021年春季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 輻射輸送シミュレーションの新地平~EHT偏波イメージ予測で探る磁場構造2020

    • Author(s)
      恒任優
    • Organizer
      日本天文学会2020年秋季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 超臨界降着流におけるコロナモデルとその放射スペクトルの特徴2020

    • Author(s)
      川中宣太
    • Organizer
      日本天文学会2020年秋季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] EHT動画撮像を用いたSgr A*への落下ガス雲の解明とブラックホールスピン の測定2020

    • Author(s)
      森山小太郎
    • Organizer
      日本天文学会2020年秋季年会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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