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Revealing the driving mechanism of black hole jets through polarization and general relativistic electromagnetism

Research Project

Project/Area Number 15H05437
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionTohoku University

Principal Investigator

Toma Kenji  東北大学, 学際科学フロンティア研究所, 助教 (70729011)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsブラックホール / 相対論的ジェット / 偏光 / 一般相対性理論 / 活動銀河核 / ガンマ線バースト / ジェット / 宇宙物理 / ガンマ線天文 / 一般相対論
Outline of Final Research Achievements

Black holes are widely thought to absorb all ambient materials, but in reality, a fraction of them can obtain high energies and escape. Most remarkable one of such phenomena is plasma jet with speed close to light speed from the vicinity of black holes. This project research has utilized general relativistic electromagnetism and succeeded in understanding the detailed physics on how the black hole rotational energy is converted to electromagnetic energy flux of jet. This project research has also confirmed that the emission mechanism of jets can be strongly constrained through polarization of gamma-ray bursts. Furthermore, this project has achieved extra things such as proposition of a new method to examine the jet driving mechanism with radio observations and theoretical interpretation of the first polarimetric observation of a gravitational wave emitter.

Report

(3 results)
  • 2017 Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (25 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (6 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Acknowledgement Compliant: 4 results) Presentation (11 results) (of which Int'l Joint Research: 8 results,  Invited: 7 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of Leeds/University of Leicester(英国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Goethe-Universitat Frankfurt am Main(ドイツ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Istituto Nazionale di Astrofisica(イタリア)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Purple Mountain Observatory(中国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] テキサス大学(米国)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] ソウル大学(韓国)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Rayleigh-Taylor instability in two-component relativistic jets2017

    • Author(s)
      Toma Kenji、Komissarov Serguei S.、Porth Oliver
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 472 Issue: 1 Pages: 1253-1258

    • DOI

      10.1093/mnras/stx1770

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The unpolarized macronova associated with the gravitational wave event GW 1708172017

    • Author(s)
      Covino S.、Wiersema K.、Fan Y. Z.、Toma K., et al.
    • Journal Title

      Nature Astronomy

      Volume: 1 Issue: 11 Pages: 791-794

    • DOI

      10.1038/s41550-017-0285-z

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ブラックホールが駆動する相対論的ジェットの物理2017

    • Author(s)
      當真賢二
    • Journal Title

      日本物理学会誌

      Volume: 72 Pages: 19-27

    • NAID

      130006288035

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evolution of an Accretion Disk in Binary Black Hole Systems2017

    • Author(s)
      Shigeo S. Kimura, Sanemichi Z. Takahashi & Kenji Toma
    • Journal Title

      The Astrophysical Journal

      Volume: 465 Issue: 4 Pages: 4406-4413

    • DOI

      10.1093/mnras/stw3036

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Causal production of the electromagnetic energy flux and role of the negative energies in the Blindfold-Znajek process2016

    • Author(s)
      Kenji Toma & Fumio Takahara
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2016 Issue: 6 Pages: 063E01-063E01

    • DOI

      10.1093/ptep/ptw081

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Gamma-Ray Bursts and Population III Stars2016

    • Author(s)
      Kenji Toma, Sung-Chul Yoon & Volker Broom
    • Journal Title

      Space Science Reviews

      Volume: 202 Issue: 1-4 Pages: 159-180

    • DOI

      10.1007/s11214-016-0250-7

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Stochastic Particle Acceleration in Turbulence Generated by the Magneto-rotational Instability2016

    • Author(s)
      Shigeo S. Kimura, Kenji Toma, Takeru K. Suzuki & Shu-ichiro Inutsuka
    • Journal Title

      The Astrophysical Journal

      Volume: 822 Issue: 2 Pages: 88-100

    • DOI

      10.3847/0004-637x/822/2/88

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 一般相対論が絡むプラズマ過程2018

    • Author(s)
      當真賢二
    • Organizer
      日本物理学会第73回年次大会 プラズマ宇宙物理3学会合同シンポジウム
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Theoretical and Observational Studies on Relativistic Jets Driven by Black Holes2017

    • Author(s)
      Kenji Toma
    • Organizer
      The 27th Workshop on General Relativity and Gravitation in Japan
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] GRBの偏光2017

    • Author(s)
      當真賢二
    • Organizer
      ガンマ線バースト研究の新機軸
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] BZ過程、パルサー風、力学的Penrose過程:3過程の違い2017

    • Author(s)
      當真賢二
    • Organizer
      不惑BZ77研究会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Acceleration and Collimation of Relativistic Jets2017

    • Author(s)
      Kenji Toma
    • Organizer
      Challenges of AGN Jets
    • Place of Presentation
      国立天文台(東京都三鷹市)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Theoretical Studies of GRBs with Multi-wavelength Polarimetry2017

    • Author(s)
      Kenji Toma
    • Organizer
      Cosmic Polarimetry from Micro to Macro Scales
    • Place of Presentation
      広島大学(広島県東広島市)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Causal Production of the electromagnetic energy flux in Blandford-Znajek process2016

    • Author(s)
      Kenji Toma
    • Organizer
      M87 Workshop
    • Place of Presentation
      Taipei (Taiwan)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Causal Production of the electromagnetic energy flux in Blindfold-Znajek process2016

    • Author(s)
      Kenji Toma
    • Organizer
      IAU324: New Frontiers in Black Hole Astrophysics
    • Place of Presentation
      Ljubljana (Slovenia)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Radio Polarimetric Study of Gamma-Ray Bursts2016

    • Author(s)
      Kenji Toma
    • Organizer
      SMA science in the next decade
    • Place of Presentation
      Taipei (Taiwan)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Relation between Blindfold-Znajek Process and Penrose Process2015

    • Author(s)
      Kenji Toma
    • Organizer
      Relativistic Jets: Creation, Dynamics, and Internal Physics
    • Place of Presentation
      Krakow (Poland)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First Stars Signatures in GRBs2015

    • Author(s)
      Kenji Toma
    • Organizer
      GRBs: A Tool to Explore the Young Universe
    • Place of Presentation
      Beijing (China)
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Funded Workshop] AGN Jet Workshop 2018 "Dawn of a New Era for Black Hole Jets in Active Galaxies"2018

    • Related Report
      2016 Annual Research Report

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Published: 2015-04-16   Modified: 2022-02-22  

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