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Understanding physics in the vicinity of super massive black holes by centimeter and millimeter observations of nearby active galactic nuclei

Research Project

Project/Area Number 22K14073
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 16010:Astronomy-related
Research InstitutionSHUNAN UNIVERSITY (2023)
Osaka University (2022)

Principal Investigator

Michiyama Tomonari  周南公立大学, 情報科学部, 助教 (40910823)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords電波天文学 / 宇宙線 / 宇宙物理 / データ天文学 / マルチメッセンジャー天文学 / 天文学 / プラズマ科学
Outline of Research at the Start

宇宙史解明において、超巨大ブラックホール周辺物理の解明は重要である。そのためには、基本物理量を知る必要がある。例えば、 ブラックホール質量計測から、巨大ブラックホールと母銀河の共進化関係が明らかになってきた。一方で、母銀河の進化と関連する相対論的ジェットの駆動機構や、 降着円盤コロナの生成機構は未解明である。これらを解明する鍵となる物理量が、 ブラックホール近傍の降着現場における磁場であるが、測定は容易ではない。本研究では、さまざまな銀河のセンチ波からミリ波の電波スペクトルを決定し、観測量を元に超巨大ブラックホール周辺の磁場を測定し、巨大ブラックホール周辺での粒子加速機構の解明に取り組む。

Outline of Final Research Achievements

We used the Atacama Large Millimeter/submillimeter Array (ALMA) to observe the millimeter emission from nearby active galactic nuclei and measure the magnetic field of the hot plasma surrounding supermassive black holes. We published papers on ALMA observations and magnetic field measurements of the nearby galaxies NGC 1068 and GRS 1734-292. Notably, for GRS 1734-292, we successfully captured time variability in millimeter emissions, resulting in a highly impactful paper. Additionally, during our research, we obtained intriguing findings related to jets and supernovae in NGC 1068. Although these results were unexpected, we prioritized publishing them.

Academic Significance and Societal Importance of the Research Achievements

あらゆる銀河の中心には、太陽の数百万倍から数十億倍の質量を持つ超巨大ブラックホールが存在する。宇宙史解明において、その基本構成要素である超巨大ブラックホール周辺の物理を解明することは重要である。本研究では、超巨大ブラックホール周辺の磁場を測定することに成功した。今後は、測定された磁場強度から超巨大ブラックホールにおける粒子加速メカニズムの解明が進むだろう。さらに、X線、γ線、ニュートリノ観測と組み合わせて、マルチメッセンジャー天文学を開拓し、銀河と超巨大ブラックホールの共進化に重要な示唆を与えるだろう。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2022

All Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results) Funded Workshop (1 results)

  • [Journal Article] ALMA Confirmation of Millimeter Time Variability in the Gamma-Ray Detected Seyfert Galaxy GRS 1734-2922024

    • Author(s)
      Michiyama Tomonari、Inoue Yoshiyuki、Doi Akihiro、Yamada Tomoya、Fukazawa Yasushi、Kubo Hidetoshi、Barnier Samuel
    • Journal Title

      The Astrophysical Journal

      Volume: 965 Issue: 1 Pages: 68-68

    • DOI

      10.3847/1538-4357/ad2fae

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The centimeter-to-submillimeter broad-band radio spectrum of the central compact component in a nearby type-II Seyfert galaxy NGC?10682023

    • Author(s)
      Michiyama Tomonari、Inoue Yoshiyuki、Doi Akihiro
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: 5 Pages: 874-882

    • DOI

      10.1093/pasj/psad044

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nobeyama 45 m CO J = 1-0 observations of luminous type 1 AGNs at z ~ 0.32023

    • Author(s)
      Michiyama Tomonari、Zhuang Ming-Yang、Shangguan Jinyi、Yesuf Hassen M、Kaneko Hiroyuki、Ho Luis C
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: 4 Pages: 825-832

    • DOI

      10.1093/pasj/psad039

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Resurrection of Type IIL Supernova 2018ivc: Implications for a Binary Evolution Sequence Connecting Hydrogen-rich and Hydrogen-poor Progenitors2023

    • Author(s)
      Maeda Keiichi、Michiyama Tomonari、Chandra Poonam、Ryder Stuart、Kuncarayakti Hanindyo、Hiramatsu Daichi、Imanishi Masatoshi
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 945 Issue: 1 Pages: L3-L3

    • DOI

      10.3847/2041-8213/acb25e

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Multiwavelength View of the Rapidly Evolving SN 2018ivc: An Analog of SN IIb 1993J but Powered Primarily by Circumstellar Interaction2022

    • Author(s)
      Maeda Keiichi、Chandra Poonam、Moriya Takashi J.、Reguitti Andrea、Ryder Stuart、Matsuoka Tomoki、Michiyama Tomonari、Pignata Giuliano、Hiramatsu Daichi、Bostroem K. Azalee、Kundu Esha、Kuncarayakti Hanindyo、Bersten Melina C.、Pooley David、Lee Shiu-Hang、Patnaude Daniel、Rodr?guez ?smar、Folatelli Gaston
    • Journal Title

      The Astrophysical Journal

      Volume: 942 Issue: 1 Pages: 17-17

    • DOI

      10.3847/1538-4357/aca1b7

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ALMA/ACA CO Survey of the IC 1459 and NGC 4636 Groups: Environmental Effects on the Molecular Gas of Group Galaxies2022

    • Author(s)
      Lee Bumhyun、Wang Jing、Chung Aeree、Ho Luis C.、Wang Ran、Michiyama Tomonari、et al.
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 262 Issue: 1 Pages: 31-31

    • DOI

      10.3847/1538-4365/ac7eba

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ALMA Detection of Parsec-scale Blobs at the Head of a Kiloparsec-scale Jet in the Nearby Seyfert Galaxy NGC 10682022

    • Author(s)
      Michiyama, Tomonari; Inoue, Yoshiyuki; Doi, Akihiro; Khangulyan, Dmitry
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 936 Issue: 1 Pages: 1-7

    • DOI

      10.3847/2041-8213/ac8935

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The centimeter-to-submillimeter broad-band radio spectrum of the central compact component in a nearby type-II Seyfert galaxy NGC 10682024

    • Author(s)
      Tomonari Michiyama
    • Organizer
      Black hole astrophysics with VLBI 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ALMA DenseGAS Survey2024

    • Author(s)
      Tomonari Michiyama
    • Organizer
      Dense GAS in Nearby Galaxies; ALMA Workshop
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Submillimeter Atomic Carbon and Mid-J CO Observations in Nearby Luminous Infrared Galaxies2023

    • Author(s)
      道山知成
    • Organizer
      Molecular Gas in Nearby Galaxies Mini-Workshop (on invitation only)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] The ALMA and Fermi view of the Seyfert 1 AGN GRS 1734-2922023

    • Author(s)
      Tomonari Michiyama
    • Organizer
      2023 Asia-Pacific Reginal IAU Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 近傍銀河NGC 1068の中心核のセンチ波からミリ波の広帯域スペクトルの起源に関する考察2023

    • Author(s)
      道山知成、他
    • Organizer
      日本天文学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] An ACA Survey of [CI](1-0), CO(4-3), and Dust Continuum in Nearby U/LIRGs2023

    • Author(s)
      道山知成
    • Organizer
      アタカマコンパクトアレイで探る星間ガス: 星・惑星形成から銀河まで
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] ALMA Confirmation of Millimeter Time Variability in the Gamma-Ray Detected Seyfert Galaxy GRS 1734-2922023

    • Author(s)
      Tomonari Michiyama et al.
    • Organizer
      ALMA at 10 years: Past, Present, and Future
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nobeyama 45-m CO J =1-0 Observations of Luminous Type 1 AGNs at z~0.32023

    • Author(s)
      道山知成
    • Organizer
      日本天文学会2023年春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 近傍セイファート銀河NGC 1068に付随する電波ジェット先端部における宇宙線生成活動2022

    • Author(s)
      道山知成
    • Organizer
      日本天文学会2022年秋季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] ALMA Detection of Parsec-scale Blobs at the Head of a Kiloparsec-scale Jet in the Nearby Seyfert Galaxy NGC 10682022

    • Author(s)
      Tomonari Michiyama
    • Organizer
      A half century of millimeter and submillimeter astronomy: Impact on astronomy/astrophysics and the future
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Funded Workshop] Dense GAS in Nearby Galaxies; ALMA Workshop2024

    • Related Report
      2023 Annual Research Report

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Published: 2022-04-19   Modified: 2025-01-30  

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