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Deciphering the origin of supermassive black holes through the comprehensive study of multiple AGNs

Research Project

Project/Area Number 19H00697
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 16:Astronomy and related fields
Research InstitutionUniversity of Tsukuba

Principal Investigator

Umemura Masayuki  筑波大学, 計算科学研究センター, 特命教授 (70183754)

Co-Investigator(Kenkyū-buntansha) 長尾 透  愛媛大学, 宇宙進化研究センター, 教授 (00508450)
松田 有一  国立天文台, アルマプロジェクト, 助教 (20647268)
高橋 労太  苫小牧工業高等専門学校, 創造工学科, 教授 (40513453)
大内 正己  東京大学, 宇宙線研究所, 教授 (40595716)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2021: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2020: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2019: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Keywords巨大ブラックホール / 活動銀河核 / 超巨大BH / 超巨大ブラックホー / 超巨大ブラックホール
Outline of Research at the Start

本研究では,最先端の理論と観測を統合したアプローチにより多重AGNを徹底的に調べ,超巨大ブラックホールの起源を明らかにする。理論では,一般相対論的輻射磁気流体コードを用いたブラックホール降着円盤の精密なモデル構築,AGNと銀河の共進化ならびに超巨大ブラックホール合体のシミュレーションを行う。観測では狭帯域フィルターを製作し,Lya, CIV, HeII輝線のコンビネーション観測を実現するとともに,連結NBフィルターによる線幅の広い1型AGNの観測を行うことで,赤方偏移2~3における多重AGNのカタログを作成する。そして,理論と観測を突き合わせることで,多重AGNと銀河の共進化過程を探究する。

Outline of Final Research Achievements

The purpose of this study is to unravel the origin of supermassive black holes through an integrated study of multiple AGNs using state-of-the-art theory and observation. In theory, we developed a three-dimensional general relativistic radiative transfer code without approximations, which is necessary to simulate the manifestation of multiple AGNs, and derived analytical solutions for relativistic radiation diffusion to treat photon trapping in super-Eddington accretion. For observations, we newly developed a narrow-band filter NB506 for the Subaru Telescope Prime Focus Camera (HSC) and combined it with the existing NB497, NB515, NB527 filters to perform a survey of broad line sources in the COSMOS field that are candidates for supermassive black holes.

Academic Significance and Societal Importance of the Research Achievements

多重AGNは,超巨大ブラックホール―銀河バルジ関係を解明する鍵となる可能性があるが,本研究で行った一般相対論的輻射輸送コードの3次元への拡張ならびに光子の相対論的拡散過程の解析解の導出は,多重AGNが物理的にリンクして生まれる過程を明らかにするために必要な輻射流体プロセスを精密にシミュレーションするための基本ツールとなる。また,本研究で開発した狭帯域フィルターNB506は,既存のNB497, NB515, NB527フィルターと組み合わせることで,今後赤方偏移2~3における大規模なAGNサンプルの構築を可能にする。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021 2020 2019

All Journal Article (14 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 13 results,  Open Access: 13 results) Presentation (1 results) (of which Int'l Joint Research: 1 results) Book (3 results)

  • [Journal Article] EMPRESS. IX. Extremely Metal-poor Galaxies are Very Gas-rich Dispersion-dominated Systems: Will the James Webb Space Telescope Witness Gaseous Turbulent High-z Primordial Galaxies?2023

    • Author(s)
      Isobe Yuki, Ouchi Masami, Nakajima Kimihiko, Mawatari Ken, et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 951 Issue: 2 Pages: 102-102

    • DOI

      10.3847/1538-4357/accc87

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Origin of Homochirality in Amino Acids Induced by Lyman-α Irradiation in the Early Stage of the Milky Way2023

    • Author(s)
      Sato Akimasa、Shoji Mitsuo、Watanabe Natsuki、Boero Mauro、Shigeta Yasuteru、Umemura Masayuki
    • Journal Title

      Astrobiology

      Volume: 23 Issue: 10 Pages: 1019-1026

    • DOI

      10.1089/ast.2022.0140

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Generation of high circular polarization of interstellar Lyman α radiation triggering biological homochirality2023

    • Author(s)
      Fukushima Hajime、Yajima Hidenobu、Umemura Masayuki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 524 Issue: 2 Pages: 2114-2123

    • DOI

      10.1093/mnras/stad1899

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Comprehensive Search of Stable Isomers of Alanine and Alanine Precursors in Prebiotic Syntheses2022

    • Author(s)
      Shoji Mitsuo、Watanabe Natsuki、Hori Yuta、Furuya Kenji、Umemura Masayuki、Boero Mauro、Shigeta Yasuteru
    • Journal Title

      Astrobiology

      Volume: 22 Issue: 9 Pages: 1129-1142

    • DOI

      10.1089/ast.2022.0011

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Theoretical Investigation into a Possibility of Formation of Propylene Oxide Homochirality in Space2022

    • Author(s)
      Hori Yuta、Nakamura Honami、Sakawa Takahide、Watanabe Natsuki、Kayanuma Megumi、Shoji Mitsuo、Umemura Masayuki、Shigeta Yasuteru
    • Journal Title

      Astrobiology

      Volume: 22 Issue: 11 Pages: 1330-1336

    • DOI

      10.1089/ast.2022.0005

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension2022

    • Author(s)
      Matsumoto Akinori、Ouchi Masami、Nakajima Kimihiko、Kawasaki Masahiro、Murai Kai、 et al
    • Journal Title

      The Astrophysical Journal

      Volume: 941 Issue: 2 Pages: 167-167

    • DOI

      10.3847/1538-4357/ac9ea1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 3D photon conserving code for time-dependent general relativistic radiative transfer: CARTOON2022

    • Author(s)
      Takahashi Mikiya M、Ohsuga Ken、Takahashi Rohta、Ogawa Takumi、Umemura Masayuki、Asahina Yuta
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 517 Issue: 3 Pages: 3711-3722

    • DOI

      10.1093/mnras/stac2822

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deep Learning of Diffuse Optical Tomography Based on Time-Domain Radiative Transfer Equation2022

    • Author(s)
      Takamizu Yuichi、Umemura Masayuki、Yajima Hidenobu、Abe Makito、Hoshi Yoko
    • Journal Title

      Applied Sciences

      Volume: 12 Issue: 24 Pages: 12511-12525

    • DOI

      10.3390/app122412511

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TRINITY: A three-dimensional time-dependent radiative transfer code for in-vivo near-infrared imaging2022

    • Author(s)
      Yajima Hidenobu、Abe Makito、Umemura Masayuki、Takamizu Yuichi、Hoshi Yoko
    • Journal Title

      Journal of Quantitative Spectroscopy and Radiative Transfer

      Volume: 277 Pages: 107948-107948

    • DOI

      10.1016/j.jqsrt.2021.107948

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of the Compressibility of Turbulence on the Dust Coagulation Process in Protoplanetary Disks2021

    • Author(s)
      Yoshiki Sakurai, Takashi Ishihara, Hitomi Furuya, Masayuki Umemura, Kenji Shiraishi
    • Journal Title

      The Astrophysical Journal

      Volume: 911 Issue: 2 Pages: 140-140

    • DOI

      10.3847/1538-4357/abe9ba

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EMPRESS. II. Highly Fe-enriched Metal-poor Galaxies with ~1.0 (Fe/O)sun and 0.02 (O/H)sun: Possible Traces of Supermassive (>300 Msun) Stars in Early Galaxies2021

    • Author(s)
      Kojima Takashi、Ouchi Masami、Rauch Michael、Ono Yoshiaki、Nakajima Kimihiko、Isobe Yuki、Fujimoto Seiji、Harikane Yuichi、Hashimoto Takuya、Hayashi Masao、Komiyama Yutaka、Kusakabe Haruka、Kim Ji Hoon、Lee Chien-Hsiu、Mukae Shiro、Nagao Tohru、Onodera Masato et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 913 Issue: 1 Pages: 22-22

    • DOI

      10.3847/1538-4357/abec3d

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Extremely Metal-poor Representatives Explored by the Subaru Survey (EMPRESS). I. A Successful Machine-learning Selection of Metal-poor Galaxies and the Discovery of a Galaxy with M* < 10^6 Msun and 0.016 Zsun2020

    • Author(s)
      Kojima Takashi、Ouchi Masami、Rauch Michael、Ono Yoshiaki、Nakajima Kimihiko、Isobe Yuki、Fujimoto Seiji、Harikane Yuichi、Hashimoto Takuya、Hayashi Masao、他10名、Yabe Kiyoto
    • Journal Title

      The Astrophysical Journal

      Volume: 898 Issue: 2 Pages: 142-142

    • DOI

      10.3847/1538-4357/aba047

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High circular polarization of near-infrared light induced by micron-sized dust grains2020

    • Author(s)
      Fukushima Hajime、Yajima Hidenobu、Umemura Masayuki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 496 Issue: 3 Pages: 2762-2767

    • DOI

      10.1093/mnras/staa1718

    • NAID

      120007146576

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Discrimination of heavy elements originating from Pop?III stars in z?= 3 intergalactic medium2019

    • Author(s)
      Kirihara Takanobu、Hasegawa Kenji、Umemura Masayuki、Mori Masao、Ishiyama Tomoaki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 491 Issue: 3 Pages: 4387-4395

    • DOI

      10.1093/mnras/stz3376

    • NAID

      120007132819

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Mergers of accreting multiple BHs leading to SMBH formation in galactic nuclei2019

    • Author(s)
      梅村雅之
    • Organizer
      The 30th Texas Symposium on Relativistic Astrophysics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Book] 輻射輸送と輻射流体力学[改訂版]2024

    • Author(s)
      梅村雅之,福江純,野村英子
    • Total Pages
      416
    • Publisher
      日本評論社
    • ISBN
      9784535790124
    • Related Report
      2023 Annual Research Report
  • [Book] 宇宙流体力学の基礎 改訂版2022

    • Author(s)
      福江 純、和田 桂一、梅村 雅之
    • Total Pages
      416
    • Publisher
      日本評論社
    • ISBN
      9784535789852
    • Related Report
      2022 Annual Research Report
  • [Book] 放射素過程の基礎2022

    • Author(s)
      中村 文隆、鶴 剛、長田 哲也、藤沢 健太、梅村 雅之、福江 純
    • Total Pages
      384
    • Publisher
      日本評論社
    • ISBN
      9784535603431
    • Related Report
      2022 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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