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Understanding formation of supermassive black hole seeds at high-redshift via direct collapse

Research Project

Project/Area Number 16H02163
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionOsaka University

Principal Investigator

Shlosman Isaac  大阪大学, 理学研究科, 招へい教授 (40772405)

Co-Investigator(Kenkyū-buntansha) 長峯 健太郎  大阪大学, 理学研究科, 教授 (50714086)
Research Collaborator LUO Yang  大阪大学
ARDANEH Kazem  大阪大学
WISE John  Georgia Institute of Technology
BEGELMAN Mitch  University of Colorado
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥36,920,000 (Direct Cost: ¥28,400,000、Indirect Cost: ¥8,520,000)
Fiscal Year 2018: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2017: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2016: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Keywords理論天文学 / 流体力学 / 銀河形成 / 巨大ブラックホール / 輻射輸送 / ダイレクトコラプス / Theoretical Astrophysics / Galaxy Formation / Cosmology / Direct Collapse / Fluid dynamics / Radiation transfer / Numerical simulations / Structure Formation / Supermassive Black Hole / Direct collapse scenario / Star formation / 宇宙物理
Outline of Final Research Achievements

Direct collapse is a promising path to form supermassive black hole (SMBH) seeds at high redshifts. The innermost region of the collapse is expected to become optically thick and requires us to follow the radiation field. We apply radiative transfer in the flux-limited diffusion (FLD) approximation to solve the evolution of coupled gas and radiation, for both isolated halos and cosmological zoom-in simulation. We find that the photosphere forms at 1e-6 pc and rapidly expands outward. A strong anisotropic outflow forms. Typical radiation luminosity emerging from the photosphere is 1e+38 to 1e+39 erg/s, of the order of Eddington luminosity. The comparison run with the adiabatic approximation differs profoundly from the FLD run, by forming a central geometrically-thick disk. Overall, an adiabatic equation of state is not a good approximation to the advanced stage of direct collapse, mainly because the radiation is capable to escape due to a local anisotropy in the optical depth.

Academic Significance and Societal Importance of the Research Achievements

巨大ブラックホールは銀河進化と密接な関係を持っていることが知られており(SMBHと銀河の共進化)、すなわち、SMBHの形成と進化をよりよく理解することは宇宙の構造形成をより深く理解することにつながります。究極的には、宇宙の構造形成を理解することが、「我々はどこからきたのか?」という疑問に答えることに繋がります。また、本経費によって若手研究員を数人雇用して、彼らのキャリア形成にも貢献しました。これらの業績は日本の学術界を世界標準に押し上げ、日本という国の文化・社会を発展させる一助にもなっております。また、若手研究者の育成を通じて、世界の科学界にも貢献していることになります。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (40 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (7 results) Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Acknowledgement Compliant: 1 results) Presentation (22 results) (of which Int'l Joint Research: 8 results,  Invited: 19 results) Book (3 results) Remarks (2 results)

  • [Int'l Joint Research] University of Kentucky/University of Colorado/University of Utah(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Xiamen University(中国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Argelander Institut fuer Astronomie(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Kentucky/University of Colorado/University of Utah(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Xiamen University(中国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Argelander Institut fuer Astronomie(ドイツ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] University of Kentucky/Colorado Univ./Georgia Tech. Univ.(米国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Ly-alpha properties of simulated galaxies in overdense regions: effects of galactic winds at z>~62019

    • Author(s)
      Sadoun Raphael、Romano-Diaz Emilio、Shlosman Isaac、Zheng Zheng
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 484 Issue: 4 Pages: 4601-4618

    • DOI

      10.1093/mnras/stz297

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct collapse to supermassive black hole seeds with radiation transfer: cosmological haloes2018

    • Author(s)
      Ardaneh Kazem、Luo Yang、Shlosman Isaac、Nagamine Kentaro、Wise John H、Begelman Mitchell C
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 479 Issue: 2 Pages: 2277-2293

    • DOI

      10.1093/mnras/sty1657

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct Collapse to Supermassive Black Hole Seeds with Radiative Transfer: Isolated Halos2018

    • Author(s)
      Luo Yang、Ardaneh Kazem、Shlosman Isaac、Nagamine Kentaro、Wise John H、Begelman Mitchell C
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 476 Issue: 3 Pages: 3523-3539

    • DOI

      10.1093/mnras/sty362

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] What makes the family of barred disc galaxies so rich: damping stellar bars in spinning haloes2018

    • Author(s)
      Collier Angela、Shlosman Isaac、Heller Clayton
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 476 Issue: 1 Pages: 1331-1344

    • DOI

      10.1093/mnras/sty270

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct collapse to supermassive black hole seeds: comparing the AMR and SPH approaches2016

    • Author(s)
      Luo Yang、Nagamine Kentaro、Shlosman Isaac
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 459 Issue: 3 Pages: 3217-3233

    • DOI

      10.1093/mnras/stw698

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Supermassive Black Hole Seed Formation at High Redshifts: Long-Term Evolution of the Direct Collapse2016

    • Author(s)
      Shlosman, I., Choi, J.-H., Begelman, M. C., Nagamine, K.
    • Journal Title

      MNRAS

      Volume: 456 Issue: 1 Pages: 500-511

    • DOI

      10.1093/mnras/stv2700

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Galaxy Formation at High-Redshift in the ELTs & JWST Era2019

    • Author(s)
      Kentaro Nagamine
    • Organizer
      Extremely Big Eyes on the Early Universe, K-IPMU, U.-Tokyo
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 「理学研究とクラウド利用のニーズ:理論宇宙物理学の例」(Needs for Cloud Usage in Scientific Research: an example from theoretical astrophysics)2019

    • Author(s)
      Kentaro Nagamine
    • Organizer
      Cyber HPC Symposium 2019, Cybermedia Center, Osaka U.
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Dark Matter & Structure Formation in the Universe2019

    • Author(s)
      Kentaro Nagamine
    • Organizer
      FPUA2019 workshop, OIST, Okinawa
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Galaxy Formation in the next decade: theoretical point of view2019

    • Author(s)
      Kentaro Nagamine
    • Organizer
      Subaru-EAO workshop, NAOJ, Tokyo
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Direct collapse to SMBH seeds with radiative transfer2019

    • Author(s)
      Yang Luo
    • Organizer
      Yunnan Astronomical Observatory
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Direct collapse to SMBH seeds with radiative transfer2019

    • Author(s)
      Yang Luo
    • Organizer
      Yunnan University
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Galaxy Formation & Dark Matter2019

    • Author(s)
      Kentaro Nagamine
    • Organizer
      31st Rironkon symposium, Kyoto Univ.
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Galaxy Formation & Dark Matter2018

    • Author(s)
      Kentaro Nagamine
    • Organizer
      31st Rironkon symposium, Kyoto Univ.
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Direct Collapse to SMBH seeds in Cosmological Halos with Radiation Transfer2018

    • Author(s)
      Kentaro Nagamine
    • Organizer
      IAU Symposium 341, Panmodel-2018, Osaka Univ
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Radiative Properties of the First Galaxies: rapid transition from blue to red2018

    • Author(s)
      Arata, S., Yajima, H., Nagamine, K., et al.
    • Organizer
      IAU Symposium 341, Panmodel-2018
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Direct Collapse to SMBH seed with Radiation Transfer2018

    • Author(s)
      Kentaro Nagamine
    • Organizer
      Are AGN Special?, U. of Durham, UK
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Proto-AGN: Seeds of Supermassive Black Holes at High Refshifts2018

    • Author(s)
      Isaac Shlosman
    • Organizer
      JILA, Colorado University, Colorado at Boulder
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Seeds of Supermassive Black Holes at High Redshifts2018

    • Author(s)
      Isaac Shlosman
    • Organizer
      University of Virginia, Charlottesville
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Breaking the Paradigm: Formation of Supermassive Black Holes2018

    • Author(s)
      Isaac Shlosman
    • Organizer
      Weizmann Institute of Science, Israel
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Accelerated Formation of Supermassive Black Holes at High Redshifts2018

    • Author(s)
      Isaac Shlosman
    • Organizer
      Technion, Israel Institute of Technology
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Direct collapse to SMBH seeds with radiative transfer2018

    • Author(s)
      Yang Luo
    • Organizer
      Sun Yat-sen University
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Direct collapse to SMBH seeds with radiative transfer2018

    • Author(s)
      Yang Luo
    • Organizer
      Xiamen University
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Direct collapse to SMBH seeds with radiative transfer2018

    • Author(s)
      Yang Luo
    • Organizer
      University of Science and Technology of China
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Invited
  • [Presentation] Direct Collapse to Supermassive Black Hole Seeds with Radiation Transfer2017

    • Author(s)
      Nagamine, K.
    • Organizer
      Sakura CLAW Ly-a Conference
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct Collapse to Supermassive Black Hole Seeds: Comparing the AMR and SPH Approaches2016

    • Author(s)
      Luo, Y., Nagamine, K., Shlosman, I.
    • Organizer
      29th Rironkon Symposium
    • Related Report
      2016 Annual Research Report
  • [Presentation] Cosmic Gas, Galaxy Formation, Feedback, and Cosmological Hydrodynamic Simulations2016

    • Author(s)
      Kentaro Nagamine
    • Organizer
      IGM tomography workshop 2016
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] High-z Galaxy Formation, Feedback, & Dust2016

    • Author(s)
      Kentaro Nagamine
    • Organizer
      "Panoramas of the Evolving Cosmos," The 6th Subaru International Conference
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] Numerical Simulations in Cosmology, Encyclopedia of Cosmology2018

    • Author(s)
      Kentaro Nagamine
    • Total Pages
      328
    • Publisher
      World Scientific Publishing
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report 2016 Annual Research Report
  • [Book] Ch.7 in "Numerical Simulations in Cosmology, Encyclopedia of Cosmology"2018

    • Author(s)
      Isaac Shlosman
    • Total Pages
      45
    • Publisher
      World Scientific Publishing
    • Related Report
      2018 Annual Research Report
  • [Book] Numerical Simulations in Cosmology, Encyclopedia of Cosmology2018

    • Author(s)
      Isaac Shlosman
    • Total Pages
      45
    • Publisher
      World Scientific Publishing
    • Related Report
      2017 Annual Research Report
  • [Remarks] personal webpage

    • URL

      http://www.pa.uky.edu/~shlosman/

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] personal webpage

    • URL

      http://astro-osaka.jp/kn/

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report

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Published: 2016-04-21   Modified: 2022-10-07  

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