Conferences & Workshops

Black-hole jets, accretion discs, and disc-winds workshop 2023

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Science and Motivation

Despite the fact that the existence of black holes is now firmly established, the structure and physical mechanisms of accretion discs, jets, and disc winds remain unresolved. In order to solve these problems, collaboration between ultra-precise observations by EHT, IXPE, XRISM, etc. and the latest theoretical research is indispensable. Therefore, we will hold a workshop for theoretical and observational researchers to share the latest results and exchange ideas, following the "Black Hole Jet, Accretion Disk, and Disk Wind Workshop 2022" held in January this year. We would like to use this meeting as an opportunity to promote joint research to understand black hole jets, accretion discs, and disc winds in an integrated manner.

This workshop is sponsored by the Center for Computational Sciences, University of Tsukuba. It is also supported by Grant-in-Aid for Scientific Research (PI: Ken Ohsuga, 21H04488), "Driving Mechanism and Diversity of Black Hole Jets Revealed by Ultra-Large Scale Computations and Ultra-High Precision Observations".

Invited Talks

  • Kimura Shigeo (Tohoku University)
  • Moriyama Kotaro (Goethe University Frankfurt)
  • Takahashi Hiromitsu (Hiroshima University)

  • Kimura Shigeo (Tohoku University)
  • Moriyama Kotaro (Goethe University Frankfurt)
  • Takahashi Hiromitsu (Hiroshima University)
  • Asahina Yuta (University of Tsukuba)
  • Furukawa Takehiro (Yamaguchi University)
  • Hada Kazuhiro (NAOJ)
  • Hayashi Takayuki (National Mizusawa VLBI Astronomical Observatory)
  • Igarashi Taichi (Chiba University)
  • Inoue Hajime (JAXA)
  • Inoue Akihiro (University of Tsukuba)
  • Kawanaka Norita (Kyoto University)
  • Kawashima Tomohisa (Institute for Cosmic Ray Research)
  • Kayanoki Taishu (Hiroshima University)
  • Kin Koki (Tohoku University)
  • Koide Shinji (Kumamoto University)
  • Kuze Riku (Tohoku University)
  • Miyoshi Makoto (NAOJ)
  • Mizumoto Misaki (Kyoto University)
  • Mochizuki Yuto (University of Tokyo & ISAS / JAXA)
  • Ogata Erika (University of Tsukuba)
  • Ogawa Takumi (University of Tsukuba)
  • Ohno Shodai (University of Tsukuba)
  • Ohsuga Ken (University of Tsukuba)
  • Shidatsu Megumi (Ehime University)
  • Shimada Yuma (University of Tsukuba)
  • Takahashi Hiroyuki (Komazawa University)
  • Takahashi Mikiya (University of Tsukuba)
  • Takahashi Rohta (NIT, Tomakomai College)
  • Takebayashi Koudai (University of Tsukuba)
  • Takeda Rintaro (University of Tsukuba)
  • Toma Kenji (Tohoku University)
  • Tomaru Ryota (Durham University)
  • Tsuda-Sato Satoko (Osaka Metropolitan University)
  • Utsumi Aoto (University of Tsukuba)
  • Yoneyama Tomokage (ISAS)
  • Yoshimoto Marina (Osaka University)
  • Yoshioka Shogo (Kyoto University)
  • Itami Kiyoshi (NAOJ)
  • Isogai Keisuke (Kyoto University)
  • Okazaki Atsuo (Hokkai Gakuen University)
  • Ki Yoshiki (Kogakuin University/NAOJ)
  • Kubota Aya (Shibaura Institute of Technology)
  • Gunji Shuichi (Yamagata University)
  • Akiyama Masayuki (Tohoku University)
  • Koide Mika (Sogo University)
  • Kobayashi Shogo (Tokyo University of Science)
  • Matsui Suin (University of Tokyo)
  • Matsumoto Naoki (Tohoku University)
  • Arai Akira (NAOJ)
  • Mizuta Akira (RIKEN)
  • Nishiyama Shogo (Miyagi University of Education)
  • Nishijima Takashi (Tokai University)
  • Ishizaki Ayumu (Kyoto University)
  • Kawamuro Taiki (RIKEN)
  • Ota Naoyuki (Tokyo University of Science / RIKEN)
  • Ichinose Yuto (Tokyo University of Science)
  • Nagao Tohru (Ehime University)
  • Tsujimoto Masahiro (ISAS)
  • Hagino Koichi (University of Tokyo)
  • Fukue Jun (―)
  • Kisaka Shota (Hiroshima University)
  • Nogami Daisaku (Kyoto University)

Important Dates

  1. Mon, Jan 16, 2023 : Registration deadline
  2. Wed, Mar 1, 2023 9:50: First day of workshop
  3. Thu, Mar 2, 2023 9:00: Last day of workshop

Registration

Registration has closed. (Deadline was Januray 16th, 2023.)

Other Information

Go out from North Exit 1 of Aobayama Subway Station and turn left at the building with a 7-Eleven on the floor. The meeting will be held in the Aoba Science Hall on the floor of the 7-Eleven.

eduroam is available for wireless LAN.

Program

1st Day ( Wed, Mar 1 )

9:50 ~ 13:30 Session 1 Chair: Kenji Toma
9:50 ~ 10:00 Introductory remarks Toma Kenji (Tohoku University)
10:00 ~ 10:50 （基）Magnetic reconnection in Black Hole Magnetospheres Kimura Shigeo (Tohoku University)
10:50 ~ 11:15 電波銀河のジェット・強磁場降着流ハイブリッド多波長放射モデル Kuze Riku (Tohoku University)
11:15 ~ 11:30 降着円盤外縁からの円盤風と内縁からのジェット放出の機構 Inoue Hajime (JAXA)
11:30 ~ 11:45 ブラックホールジェットのプラズマ供給機構について Koide Shinji (Kumamoto University)
11:45 ~ 12:00 ポスターフラッシュトーク ()
12:00 ~ 13:30 Lunch
13:30 ~ 15:35 Session 2 Chair: Shigeo Kimura
13:30 ~ 13:55 エディントン光度を超えた活動銀河核における radiatively-driven extremely-fast clumpy absorber の存在 Mizumoto Misaki (Kyoto University)
13:55 ~ 14:10 大局的輻射流体計算で探る、超臨界降着流のアウトフローと運動学的光度 Yoshioka Shogo (Kyoto University)
14:10 ~ 14:35 カー・ブラックホール周りにおける Magnetically Arrested Supercritical Diskの一般相対論的輻射磁気流体シミュレーション Utsumi Aoto (University of Tsukuba)
14:35 ~ 15:00 歳差運動する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 Asahina Yuta (University of Tsukuba)
15:00 ~ 15:15 一般相対論的輻射磁気流体力学計算による亜臨界降着円盤の内縁構造とブラックホールスピンの研究 Ohno Shodai (University of Tsukuba)
15:15 ~ 15:35 Break
15:35 ~ 16:40 Session 3 Chair: Ken Ohsuga
15:35 ~ 15:50 GMRT 322MHzによるBroad Absorption Line Quasarsのサーベイ観測 Hayashi Takayuki (National Mizusawa VLBI Astronomical Observatory)
15:50 ~ 16:05 高角分解能観測が暴く近傍電波銀河の質量降着過程 Tsuda-Sato Satoko (Osaka Metropolitan University)
16:05 ~ 16:20 高赤方偏移AGN J1430+4204, J1510+5702の22, 43 GHz帯におけるVLBI観測 Furukawa Takehiro (Yamaguchi University)
16:20 ~ 16:40 Break
16:40 ~ 18:10 Session 4 Chair: Ken Ohsuga
16:40 ~ 17:30 （基）Event Horizon Telescopeによる天の川銀河中心の巨大ブラックホールの直接撮影と今後の展望 Moriyama Kotaro (Goethe University Frankfurt)
17:30 ~ 17:55 Lense-Thirring歳差を伴う降着流・相対論的ジェットの多波長放射特性 Kawashima Tomohisa (Institute for Cosmic Ray Research)
17:55 ~ 18:10 A Better Image of Sgr A* from EHT Public Data Miyoshi Makoto (NAOJ)

2nd Day ( Thu, Mar 2 )

9:00 ~ 13:30 Session 5 Chair: Kazuhiro Hada
9:00 ~ 10:00 ポスター ()
10:00 ~ 10:50 （基）X線偏光観測から探るブラックホール周辺の物理 Takahashi Hiromitsu (Hiroshima University)
10:50 ~ 11:15 活動銀河核の軟X線超過の起源 Kawanaka Norita (Kyoto University)
11:15 ~ 11:40 Changing Look AGNにおける軟X線放射領域の輻射磁気流体モデル Igarashi Taichi (Chiba University)
11:40 ~ 13:30 Lunch
13:30 ~ 15:25 Session 6 Chair: Hiroyuki Takahashi
13:30 ~ 13:45 Ionized wind in radio-loud AGN Kayanoki Taishu (Hiroshima University)
13:45 ~ 14:00 活動銀河核 Mrk 766 が示す幅の広い鉄 K 輝線構造の起源 Mochizuki Yuto (University of Tokyo & ISAS / JAXA)
14:00 ~ 14:25 Dusty-gas中を浮遊する種ブラックホール降着円盤への降着過程：ダスト昇華と非等方輻射場の影響 Ogata Erika (University of Tsukuba)
14:25 ~ 14:40 孤立ブラックホール磁気圏からのガンマ線放射とその検出可能性 Kin Koki (Tohoku University)
14:40 ~ 15:05 磁化した中性子星への超臨界降着流の一般相対論的輻射磁気流体力学シミュレーション Inoue Akihiro (University of Tsukuba)
15:05 ~ 15:25 Break
15:25 ~ 17:15 Session 7 Chair: Misaki Mizumoto
15:25 ~ 15:50 X 線連星 MAXI J1820+070 の多波長観測による低光度ブラックホール降着円盤の研究 Shidatsu Megumi (Ehime University)
15:50 ~ 16:15 X-ray spectroscopy of the accretion disk corona source 2S 0921−630 Yoneyama Tomokage (ISAS)
16:15 ~ 16:40 青色コンパクト矮小銀河1Zw18に存在するULXのスペクトル変動 Yoshimoto Marina (Osaka University)
16:40 ~ 17:05 X線連星における熱・放射駆動型円盤風 Tomaru Ryota (Durham University)
17:05 ~ 17:15 おわりに Ohsuga Ken (University of Tsukuba)

Posters

P1 M87における三日月状シャドウの時間変動とブラックホールスピンの測定 Takahashi Mikiya (University of Tsukuba)
P2 突発的超臨界降着現象における降着衝撃波の研究 Shimada Yuma (University of Tsukuba)
P3 相対論的流体中から放出された光子の多重散乱効果： 数値計算によるアプローチ Takeda Rintaro (University of Tsukuba)
P4 輻射非効率円盤におけるコンプトン散乱を考慮した電子温度計算 Ogawa Takumi (University of Tsukuba)
P5 コンプトン散乱を考慮した偏光X線の輻射輸送計算コードの開発 Takebayashi Koudai (University of Tsukuba)
P6 相対論的流体における光子多重散乱 Takahashi Rohta (NIT, Tomakomai College)

Organizers

  • Ken Ohsuga (University of Tsukuba)
  • Hiroyuki Takahashi (Komazawa University)
  • Kenji Toma (Tohoku University)
  • Kazuhiro Hada (NAOJ)
  • Alexander Wagner (University of Tsukuba)