Formation Mechanism for Supermassive Black Holes through Multi-dimensional radiationMmagnetohydrodynamic Simulations

• Project/Area Number: 20740115
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: OHSUGA Ken National Astronomical Observatory of Japan, 理論研究部, 助教 (90386508)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: ブラックホール / ガス円盤 / ジェット / 数値計算 / 降着円盤 / 磁気流体シミュレーション / 輻射輸送

Research Abstract

We performed the global 2D-radiation magnetohydrodynamic simulations of the accretion disks and jets around black holes. Three distinct accretion disks are for the first time reproduced by one numerical code. Especially, we found a new type jet : radiatively-driven, magnetically-collimated jet.

Research Products

• [Journal Article] Global structure of three distinct accretion flows and outflows around black holes through two-dimensional radiation-magnetohydrodynamic simulations (2011)
  • Author(s): K.Ohsuga, S.Mineshige
  • Journal Title: Astrophysical Journal Volume: (In press)
  • Peer Reviewed
• [Journal Article] A Novel Jet Model : Magnetically Collimated (2010)
  • Author(s): S.Takeuchi, K.Ohsuga, S.Mineshige
  • Journal Title: Radiation-Pressure Driven Jet, PASJ Letters 62 Pages: 43-47
  • Peer Reviewed
• [Journal Article] Radiation Magnetohydrodynamics Simulation of Proto-stellar Collapse : Two-component Molecular Outflow (2010)
  • Author(s): K.Tomida, K.Tomisaka, T.Matsumoto, K.Ohsuga, M.N.Machida, K.Saigo
  • Journal Title: Astrophysical Journal Letters 714 Pages: 58-63
  • Peer Reviewed
• [Journal Article] Radiation Magnetohydrodynamics Simulation of Proto-stellar Collapse : Two-component Molecular Outflow (2010)
  • Author(s): K.Tomida, K.Tomisaka, T.Matsumoto, K.Ohsuga, M.N.Machida, K.Saigo
  • Journal Title: Astrophysical Journal Letters Volume: 714 Pages: 58-63
  • Peer Reviewed
• [Journal Article] Three-dimensional Radiative Properties of Hot Accretion Flows onto the Galactic Centre Black Hole (2009)
  • Author(s): Y.Kato, M.Umemura, K.Ohsuga
  • Journal Title: MNRAS 400 Pages: 1742-1748
  • Peer Reviewed
• [Journal Article] Modified Slim-Disk Model Based on Radiation-Hydrodynamic Simulation Data : The Conflict Between Outflow and Photon Trapping (2009)
  • Author(s): S.Takeuchi, S.Mineshige, K.Ohsuga
  • Journal Title: PASJ 61, 4 Pages: 783-790
  • NAID: 10025600698
  • Peer Reviewed
• [Journal Article] New Spectral State of Supercritical Accretion Flow with Comptonizing Outflow (2009)
  • Author(s): T.Kawashima, K.Ohsuga, S.Mineshige, D.Heinzeller, H.Takabe, R.Matsumoto
  • Journal Title: PASJ 61 Pages: 769-776
  • NAID: 10025600611
  • Peer Reviewed
• [Journal Article] Global Radiation-Magnetohydrodynamic Simulations of Black Hole Accretion Flow and Outflow : Unified Model of Three States (2009)
  • Author(s): K.Ohsuga, S.Mineshige, M.Mori, Y.Kato
  • Journal Title: PASJ Letters 61 Pages: 7-11
  • NAID: 10025598963
  • Peer Reviewed
• [Journal Article] Three-dimensional radiative properties of hot accretion flows on to the Galactic Centre black hole (2009)
  • Author(s): Kato, Y., Umemura, M., Ohsuga, K.
  • Journal Title: Monthly Notices of the Royal Astronomical Society 400 Pages: 1742-1748
  • Peer Reviewed
• [Journal Article] Modified Slim-Disk Model Based on Radiation-Hydrodynamic Simulation Data : The Conflict between Outflow and Photon Trapping (2009)
  • Author(s): Takeuchi, Shun, Mineshige, Shin, Ohsuga, Ken
  • Journal Title: Publications of the Astronomical Society of Japan 61 Pages: 783-790
  • NAID: 10025600698
  • Peer Reviewed
• [Journal Article] Global Radiation-Magnetohydrodynamic Simulations of Black-Hole Accretion Flow and Outflow : Unified Model of Three States (2009)
  • Author(s): Ohsuga, Ken, Mineshige, Shin, Mori, Masao, Kato, Yoshiaki
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • NAID: 10025598963
  • Peer Reviewed
• [Journal Article] Global Structure of Three Distinct Accretion Flows and Outflows Around Black Holes through Two-Dimensional Radiation-Magnetohydrodynamic Simulations
  • Author(s): K.Ohsuga, S.Mineshige
  • Journal Title: Astrophysical Journal in press
  • Peer Reviewed
• [Presentation] Sub-Eddington円盤の大局的輻射磁気流体シミュレーション;光度と内縁半径の時間変動 (2011)
  • Author(s): 大須賀健、嶺重慎
  • Organizer: 日本天文学会
  • Place of Presentation: 筑波大学
• [Presentation] 降着円盤の輻射磁気流体力学モデル;円盤およびアウトフローの力学構造 (2010)
  • Author(s): 大須賀健、嶺重慎、森正夫、加藤成晃、竹内駿、富田賢吾
  • Organizer: 日本天文学会
  • Place of Presentation: 山口大学
• [Presentation] Radiation-magnetohydrodynamic simulations of black hole accretion flow and outflow (2010)
  • Author(s): K.Ohsuga
  • Organizer: Accretion and Outflow in Black Hole Systems
  • Place of Presentation: Kathmandu, Nepal
• [Presentation] Radiation MHD Simulations of Black Hole Accretion Flow and Outflow (2010)
  • Author(s): K.Ohsuga
  • Organizer: Relativistic Whirlwind
  • Place of Presentation: Trieste, Italy
• [Presentation] 大局的輻射磁気流体計算によるブラックホール降着・噴出流の構造の解明 (2009)
  • Author(s): 大須賀健、嶺重慎、森正夫、加藤成晃
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪府立大学
• [Presentation] 降着円盤の輻射磁気流体力学 (2009)
  • Author(s): 大須賀健
  • Organizer: 基研研究会「宇宙流体力学のフロンティア」
  • Place of Presentation: 京都大学
• [Presentation] ブラックホール降着・噴出流の大局的2次元輻射磁気流体シミュレーション (2008)
  • Author(s): 大須賀健、加藤成晃、森正夫、嶺重慎
  • Organizer: 日本天文学会
  • Place of Presentation: 岡山理科大学
• [Presentation] Theory of multi-dimensional accretion flow (2008)
  • Author(s): Ken OHSUGA
  • Organizer: AGN Workshop in Crete
  • Place of Presentation: Crete, Greece
• [Presentation] Global Radiation Magneto-hydrodynamic Simulations of Accretion Flows and Outflows around Black Holes (2008)
  • Author(s): Ken OHSUGA
  • Organizer: 3rd East Asia Numerical Astrophysics Meeting
  • Place of Presentation: Nanjing, China