Global Radiation-magnetohydrodynamics Simulations of Black-hole Outflows

• Project/Area Number: 24740127
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: OHSUGA Ken 国立天文台, 理論研究部, 助教 (90386508)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: ブラックホール / 降着円盤 / ジェット / 数値計算 / アウトフロー / 数値シミュレーション / 磁気流体シミュレーション / 輻射輸送

Outline of Final Research Achievements

We performed radiation-magnetohydrodynamics simulations of outflows launching from the black-hole accretion disks. It is found that the outflow fragments into many gas clouds due to the Rayleigh-Taylor instability. Also, we were successful in developing a novel numerical method for relativistic radiation-magnetohydrodynamics. By perfuming the simulations in the vicinity of the black hole with using the new code, we revealed that the jet velocity is reduced by the radiation drag.

Research Products

• [Journal Article] Radiation drag effects in black hole outflows from super-critical accretion disks via special relativistic radiation magnetohydrodynamics simulations (2015)
  • Author(s): Takahashi, Hiroyuki R.; Ohsuga, Ken
  • Journal Title: Publications of the Astronomical Society of Japan Volume: - Issue: 4 Pages: 60-70
  • DOI: 10.1093/pasj/psu145
  • Peer Reviewed
• [Journal Article] Radiation hydrodynamics simulations of wide-angle outflows from super-critical accretion disks around black holes (2015)
  • Author(s): Hashizume, Katsuya; Ohsuga, Ken; Kawashima, Tomohisa; Tanaka, Masaomi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: - Issue: 4 Pages: 58-67
  • DOI: 10.1093/pasj/psu132
  • Peer Reviewed
• [Journal Article] Discovery of Dramatic Optical Variability in SDSS J1100+4421: A Peculiar Radio-loud Narrow-line Seyfert 1 Galaxy? (2014)
  • Author(s): Tanaka, M., Morokuma, T., Itoh, R., Akitaya, H., Tominaga, N., Saito, Y., Stawarz, L., Tanaka, Y. T., Gandhi, P., Ali, G., Aoki, T., Contreras, C., Doi, M., Essam, A., Hamed, G., Hsiao, E. Y., Iwata, I., Kawabata, K. S., Kawai, N., Kikuchi, Y. et al.
  • Journal Title: The Astrophysical Journal Volume: 793 Issue: 2 Pages: 26-31
  • DOI: 10.1088/2041-8205/793/2/l26
  • Peer Reviewed
• [Journal Article] Radiation hydrodynamic instability in a plane-parallel, super-Eddington atmosphere: A mechanism for clump formation (2014)
  • Author(s): Takeuchi, Shun; Ohsuga, Ken; Mineshige, Shin
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 66 Issue: 2 Pages: 48-56
  • DOI: 10.1093/pasj/psu011
  • NAID: 40020091145
  • Peer Reviewed
• [Journal Article] Two-dimensional Numerical Simulations of Supercritical Accretion Flows Revisited (2014)
  • Author(s): Yang, Xiao-Hong; Yuan, Feng; Ohsuga, Ken; Bu, De-Fu
  • Journal Title: The Astrophysical Journal Volume: 780 Issue: 1 Pages: 79-93
  • DOI: 10.1088/0004-637x/780/1/79
  • Peer Reviewed
• [Journal Article] A Numerical Treatment of Anisotropic Radiation Fields Coupled with Relativistic Resistive Magnetofluids (2013)
  • Author(s): Takahashi, Hiroyuki R.; Ohsuga, Ken
  • Journal Title: The Astrophysical Journal Volume: 772 Issue: 2 Pages: 127-142
  • DOI: 10.1088/0004-637x/772/2/127
  • Peer Reviewed
• [Journal Article] Clumpy Outflows from Supercritical Accretion Flow (2013)
  • Author(s): Takeuchi, Shun; Ohsuga, Ken; Mineshige, Shin
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 65 Issue: 4 Pages: 88-99
  • DOI: 10.1093/pasj/65.4.88
  • NAID: 40020043233
  • Peer Reviewed
• [Journal Article] Recurrent Outbursts and Jet Ejections Expected in Swift J1644+57 : Limit-Cycle Activities in a Supermassive Black Hole (2013)
  • Author(s): Kawashima, T., Ohsuga, K., Usui, R., Kawai, N., Negoro, H., Matsumoto, R
  • Journal Title: Publications of the Astronomical Society of Japan Volume: Vol.65 Issue: 4 Pages: 8-12
  • DOI: 10.1093/pasj/65.4.l8
  • NAID: 40020043164
  • Peer Reviewed
• [Journal Article] Spectroscopy along Multiple, Lensed Sight Lines through Outflowing Winds in the Quasar SDSS J1029+2623 (2013)
  • Author(s): Toru Misawa, Naohisa Inada, Ken Ohsuga, Poshak Gandhi, Rohta Takahashi, Masamune Oguri
  • Journal Title: The Astronomical Journal Volume: Vol.145, Issue 2, article id.48 Issue: 2 Pages: 12-12
  • DOI: 10.1088/0004-6256/145/2/48
  • NAID: 120007102753
  • Peer Reviewed
• [Journal Article] Explicit-Implicit Scheme for Relativistic Radiation Hydrodynamics (2013)
  • Author(s): Takahashi, Hiroyuki R.; Ohsuga, Ken; Sekiguchi, Yuichiro; Inoue, Tsuyoshi; Tomida, Kengo
  • Journal Title: The Astrophysical Journal Volume: 764 Issue: 2 Pages: 122-135
  • DOI: 10.1088/0004-637x/764/2/122
  • Peer Reviewed
• [Journal Article] Modeling line-driven disk wind for broad absorption lines of quasars (2013)
  • Author(s): Nomura, Mariko; Ohsuga, Ken; Wada, Keiichi; Susa, Hajime; Misawa, Toru
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 65 Pages: 40-49
  • NAID: 40020043288
  • Peer Reviewed
• [Journal Article] Comptonized PhotonSpectra of Supercritical Black HoleAccretion Flows with Application toUltraluminous X-Ray Sources (2012)
  • Author(s): Kawashima, T., Ohsuga, K.,Mineshige, S., Yoshida, T., Heinzeller,D., Matsumoto, R
  • Journal Title: ApJ Volume: 752 Issue: 1 Pages: 18-29
  • DOI: 10.1088/0004-637x/752/1/18
  • Peer Reviewed
• [Presentation] 熱的コンプトン冷却を考慮した超臨界降着流のパラメータサーベイ (2015)
  • Author(s): 小川拓未, 嶺重慎, 川島朋尚, 大須賀健
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪大学（大阪府）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] 降着円盤アウトフローの密度/速度構造が与えるスペクトル吸収線への影響 (2015)
  • Author(s): 吉田鉄生, 野村真理子, 大須賀健
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪大学（大阪府）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] ラインフォース駆動型円盤風の示す時間変動 (2015)
  • Author(s): 野村真理子, 大須賀健, 高橋博之
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪大学（大阪府）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] 一般相対論的輻射磁気流体計算で探る高降着円盤構造 (2015)
  • Author(s): 高橋博之, 大須賀健, 関口雄一郎, 川島朋尚
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪大学（大阪府）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] 輻射磁気流体シミュレーションによるブラックホールの成長とフィードバック (2014)
  • Author(s): 大須賀健
  • Organizer: 超巨大ブラックホール研究推進連絡会」第２回ワークショップ
  • Place of Presentation: 筑波大学（茨城県）
  • Year and Date: 2014-11-03 – 2014-11-04
  • Invited
• [Presentation] Ultra Fast Outflowのラインフォース駆動型円盤風モデル II; スペクトル合成 (2014)
  • Author(s): 吉田鉄生, 野村真理子, 大須賀健, 海老沢研, 辻本匡弘, 中川友進
  • Organizer: 日本天文学会
  • Place of Presentation: 山形大学（山形県）
  • Year and Date: 2014-09-10 – 2014-09-13
• [Presentation] Ultra Fast Outflowのラインフォース駆動型円盤風モデル I; 流体シミュレーション (2014)
  • Author(s): 野村真理子, 大須賀健, 高橋博之, 和田桂一
  • Organizer: 日本天文学会
  • Place of Presentation: 山形大学（山形県）
  • Year and Date: 2014-09-10 – 2014-09-13
• [Presentation] 超臨界降着円盤の一般相対論的輻射磁気流体シミュレーション (2014)
  • Author(s): 高橋博之, 大須賀健
  • Organizer: 日本天文学会
  • Place of Presentation: 山形大学（山形県）
  • Year and Date: 2014-09-10 – 2014-09-13
• [Presentation] 時間依存型輻射輸送方程式を解く特殊相対論的流体力学計算の新解法 (2014)
  • Author(s): 大須賀健, 高橋博之
  • Organizer: 日本天文学会
  • Place of Presentation: 山形大学（山形県）
  • Year and Date: 2014-09-10 – 2014-09-13
• [Presentation] Global Radiation-MHD Simulations of Super-Eddington Accretion Flows and Outflows (2014)
  • Author(s): K. Ohsuga
  • Organizer: Hyper Accretoion
  • Place of Presentation: Institute for the Physcs and Mathematics of the Universe（千葉県）
  • Year and Date: 2014-04-07 – 2014-04-11
  • Invited
• [Presentation] ラインフォース駆動型円盤風の輻射流体シミュレーションによるUltra-fast outflowの起源の解明 (2014)
  • Author(s): 野村真理子, 大須賀健, 和田桂一, 高橋博之
  • Organizer: 日本天文学会
  • Place of Presentation: 国際基督教大学（東京都）
• [Presentation] Radiation-MHD simulations of accretion flows and outflows around black holes (2013)
  • Author(s): K. Ohsuga
  • Organizer: Black holes, jets and outflows
  • Place of Presentation: ホテル ラディソン（カトマンズ・ネパール）
  • Invited
• [Presentation] Global simulations of super-Eddington accretion flows and outflows (2013)
  • Author(s): K. Ohsuga
  • Organizer: Radiative Processes Near Black Holes
  • Place of Presentation: Princeton Univ., USA
  • Invited
• [Presentation] 超臨界降着流からのジェット/アウトフローの形成 (2013)
  • Author(s): 高橋博之, 大須賀健
  • Organizer: 日本天文学会
  • Place of Presentation: 東北大学（宮城県）
• [Presentation] 突発天体Swift J1644+57の再バースト予測 II: 潮汐破壊星による質量供給率の時間変化を考慮した輻射流体シミュレーション (2013)
  • Author(s): 川島朋尚, 大須賀健, 薄井竜一, 河合誠之, 松元亮治
  • Organizer: 日本天文学会
  • Place of Presentation: 東北大学（宮城県）
• [Presentation] 活動銀河核におけるラインフォース駆動型円盤風の輻射流体シミュレーション (2013)
  • Author(s): 野村真理子, 大須賀健, 和田桂一, 高橋博之
  • Organizer: 日本天文学会
  • Place of Presentation: 東北大学（宮城県）
• [Presentation] 輻射流体計算による超臨界降着流及び噴出流の大域的構造の研究 (2013)
  • Author(s): 橋詰克也, 川島朋尚, 大須賀健
  • Organizer: 日本天文学会
  • Place of Presentation: 東北大学（宮城県）
• [Presentation] 相対論的輻射流体力学計算の新展開 (2013)
  • Author(s): 大須賀健, 高橋博之
  • Organizer: 日本天文学会
  • Place of Presentation: 埼玉大学（埼玉県）
• [Presentation] Radiation Magnetohydrodynamics of Black Hole Accretion Flows and Outflows (2012)
  • Author(s): K. Ohsuga
  • Organizer: East Asia Numerical Astrophysics Meeting
  • Place of Presentation: 京都大学（京都府）
  • Invited
• [Presentation] Launching mechanisms (2012)
  • Author(s): K. Ohsuga
  • Organizer: he Physics of Accretion onto Black Holes
  • Place of Presentation: Bern, Switzerland
  • Invited
• [Presentation] Simulations of the radiation-pressure instability of disk and outflow (2012)
  • Author(s): K. Ohsuga
  • Organizer: Accretion flow instabilities
  • Place of Presentation: Warsaw, Poland
  • Invited
• [Presentation] Overview of Recent Advances in Accretion Disk Theory (2012)
  • Author(s): K. Ohsuga
  • Organizer: 2012 X-ray Binaries
  • Place of Presentation: Boston, USA
  • Invited
• [Presentation] Radiation-MHD Simulations of Accretion Flows and Outflows around Black Holes (2012)
  • Author(s): K. Ohsuga
  • Organizer: ASTRONUM 2012
  • Place of Presentation: Hawaii, USA
  • Invited
• [Presentation] AGNの輻射磁気流体シミュレーション (2012)
  • Author(s): 大須賀健
  • Organizer: 25回理論天文学懇談会シンポジウム
  • Place of Presentation: 国際会議場（茨城県）
  • Invited
• [Presentation] 輻射流体不安定によるClumpyな円盤風の形成について (2012)
  • Author(s): 大須賀健
  • Organizer: 松山ブラックホールワークショップ2012
  • Place of Presentation: 愛媛大学（愛媛県）
  • Invited