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Interactions between intracluster medium and AGN jets explored through long-wavelength radio observations of distinct galaxy clusters

Research Project

Project/Area Number 21H01135
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 16010:Astronomy-related
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

Akahori Takuya  国立天文台, 水沢VLBI観測所, 特任研究員 (70455913)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2023: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2022: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2021: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Keywords銀河団 / 活動銀河中心核(AGN) / 磁場 / 宇宙線 / 電波天文学 / X線天文学 / 活動銀河核 / SKA
Outline of Research at the Start

本研究では、銀河団を構成する銀河の活動銀河核からのジェットが、どのように磁場や宇宙線電子を銀河団に含まれる高温プラズマガスに供給し、そしてどのようにガスを加熱しているのかを明らかにすることで、銀河団の進化や宇宙の磁場進化に残された謎を解明することを目的とする。そのために、代表的な3つの銀河団を世界最新鋭の長波長電波望遠鏡(MeerKAT, GMRT, EAVN)などを使って観測し、解析する。本研究は若手研究者の育成を含めた電波の将来計画(SKA計画等)に向けた準備研究に位置づけられ、X線の将来計画と強いシナジーを生み出す。

Outline of Final Research Achievements

In this study, we aimed to gain new insights into the interaction between galaxy clusters and active galactic nucleus (AGN) jets by using state-of-the-art long-wavelength radio telescopes to observe characteristic galaxy clusters with high resolution and high sensitivity. As a result, this research led to the publication of 11 peer-reviewed papers and one master's thesis. Key findings include: in Abell 3376, the intracluster magnetic field bends the radio jet, and another jet connects to a complex structure of the eastern radio relic; in CIZA 1359, diffuse radio emission was discovered in the linked region of the early-stage merging clusters and it aligns with the shock wave observed in X-rays; in the Phoenix cluster, the AGN was found to be surprisingly radio-quiet; and in Abell 1060, an unclassified diffuse radio emission was discovered.

Academic Significance and Societal Importance of the Research Achievements

本研究は宇宙で最大の天体である銀河団の形成と進化に、銀河中心のブラックホールからのジェットと呼ばれる高速な物質流がどのような影響を与えるのかについて理解を深めました。そのための研究に向いている波長の長い電波の観測を行い、様々な銀河団について新たな知見を得ました。本研究で得られた成果は、私達の宇宙がどのように形作られてきたかという問いに対して、ジェットの寄与、そしてその寄与の仕方が大変重要であるということを教えてくれました。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (52 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (10 results) Journal Article (12 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 12 results,  Open Access: 2 results) Presentation (28 results) (of which Int'l Joint Research: 11 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] オーストラリア国立大学(オーストリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] NCRA(インド)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Leiden University/ASTRON/SRON(オランダ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] SARAO/Rhodes University(南アフリカ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 台湾中央研究院(その他の国・地域(台湾))

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] NCRA(インド)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Leiden University/ASTRON/SRON(オランダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] SARAO/Rhodes University(南アフリカ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] SARAO/North-West University(南アフリカ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Nigeria(ナイジェリア)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Discovery of diffuse radio source in Abell 10602024

    • Author(s)
      Kurahara Kohei、Akahori Takuya、Oki Aika、Omiya Yuki、Nakazawa Kazuhiro
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 76 Issue: 2 Pages: L8-L13

    • DOI

      10.1093/pasj/psae011

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Design of Superconducting Hex-Band Bandpass Filter Using New External Quality Factor Adjustment Method2023

    • Author(s)
      Sekiya N.、Sakuma K.、Akahori T.
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 33 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2023.3265578

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] HTS Penta-Band Bandpass Filter for Radio Astronomy Broadband Receiver in the UHF Band2023

    • Author(s)
      Sekiya N.、Sakuma K.、Akahori T.
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 34 Issue: 3 Pages: 1-5

    • DOI

      10.1109/tasc.2023.3344420

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of depolarizing intervening galaxies on background radio emission. I. Global disk magnetic field2023

    • Author(s)
      R. Omae, T. Akahori, M. Machida
    • Journal Title

      PASJ

      Volume: 75 Issue: Supplement_1 Pages: S108-S122

    • DOI

      10.1093/pasj/psac045

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Diffuse radio source candidate in CIZA J1358.9-47502023

    • Author(s)
      K. Kurahara, T. Akahori, R. Kale, H. Akamatsu, Y. Fujita, L. Gu, H. Intema, K. Nakazawa, N. Okabe, Y. Omiya, V. Parekh, T. Shimwell, M. Takizawa, R. van Weeren
    • Journal Title

      PASJ

      Volume: 75 Issue: Supplement_1 Pages: S138-S153

    • DOI

      10.1093/pasj/psac098

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Detection of a bright burst from the repeating fast radio burst 20201124A at 2GHz2023

    • Author(s)
      Ikebe Sota、Takefuji Kazuhiro、Terasawa Toshio、Eie Sujin、Akahori Takuya、Murata Yasuhiro、Hashimoto Tetsuya、Kisaka Shota、Honma Mareki、Yoshiura Shintaro、Suzuki Syunsaku、Oyama Tomoaki、Sekido Mamoru、Niinuma Kotaro、Takeuchi Hiroshi、Yonekura Yoshinori、Enoto Teruaki
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: 1 Pages: 199-207

    • DOI

      10.1093/pasj/psac101

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Galaxy clusters at z~1 imaged by ALMA with the Sunyaev-Zel'dovich effect2023

    • Author(s)
      T. Kitayama, S. Ueda, N. Okabe, T. Akahori, M. Hilton, J. P. Hughes, Y. Ichinohe, K. Kohno, E. Komatsu, Y.-T. Lin, H. Miyatake, M. Oguri, C. Sifon, S. Takakuwa, M. Takizawa, T. Tsutsumi, J. van Marrewijk, E. J. Wollack
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: 2 Pages: 311-337

    • DOI

      10.1093/pasj/psac110

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Wavelets and sparsity for Faraday tomography2022

    • Author(s)
      Cooray Suchetha、Takeuchi Tsutomu T、Ideguchi Shinsuke、Akahori Takuya、Miyashita Yoshimitsu、Takahashi Keitaro
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: Supplement_1 Pages: S85-S96

    • DOI

      10.1093/pasj/psac052

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] XMM-Newton view of the shock heating in an early merging cluster, CIZA J1358.9-47502022

    • Author(s)
      Y. Omiya, K. Nakazawa, K. Matsushita, S. B. Kobayashi, N. Okabe, K. Sato, T. Tamura, Y. Fujita, L. Gu, T. Kitayama, T. Akahori, K. Kurahara, T. Yamaguchi
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 75 Issue: 1 Pages: 37-51

    • DOI

      10.1093/pasj/psac087

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of highly selective compact high-temperature superconducting quad-band bandpass filter using interdigital feeding structure for radio astronomy2022

    • Author(s)
      S. Rachi, K. Sakuma, T. Akahori, N. Sekiya
    • Journal Title

      Superconductor Science and Technology

      Volume: 36 Issue: 2 Pages: 025006-025006

    • DOI

      10.1088/1361-6668/acab38

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the potential of faraday tomography to identify shock structures in supernova remnants2022

    • Author(s)
      Ideguchi Shinsuke、Inoue Tsuyoshi、Akahori Takuya、Takahashi Keitaro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 513 Issue: 3 Pages: 3289-3301

    • DOI

      10.1093/mnras/stac1086

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evidence of an interaction between jets and intra-cluster magnetic layer2021

    • Author(s)
      J. O. Chibueze, H. Sakemi, T. Ohmura, M. Machida, H. Akamatsu, T. Akahori, H. Nakanishi, V. Parekh, R. van Rooyen, T. and T. Takeuchi, 2021
    • Journal Title

      Nature

      Volume: 593 Issue: 7857 Pages: 47-50

    • DOI

      10.1038/s41586-021-03434-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] CIZA J1410中心部に見られる電波構造の起源2023

    • Author(s)
      赤堀卓也, 大木愛花, 藏原昂平, 赤松弘規
    • Organizer
      日本天文学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Development for Japan L-band VLBI Observation2023

    • Author(s)
      K.KURAHARA, O.TOMOAKI, T.TOSHIO, K.HIDEYUKI, N.HIROYUKI, A.TAKUYA, H.KAZUHIRO, H.TOMOYA, I.SOTA, I.HIROSHI, J.TAKAAKI, M.YASUHIRO, N.KOTARO, T.KAZUHIRO
    • Organizer
      XXXXVth URSI General Assembly and Scientific Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Radio Property of the Head-Tail Galaxy in Abell 33222023

    • Author(s)
      K.KURAHARA, T.AKAHORI, T.OHMURA, S.YOSHIURA, M.TAKIZAWA, H.SAKEMI
    • Organizer
      East Asia SKA Science Workshop 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] uGMRT Observations of Galaxy Cluster CIZA13592023

    • Author(s)
      K.KURAHARA, T.AKAHORI, R.KALE, H.AKAMATSU, Y.FUJITA, L.GU, H.INTEMA, K.NAKAZAWA, N.OKABE, Y.OMIYA, V.PAREKH, T.SHIMWELL, M.TAKIZAWA and R.V.WEEREN
    • Organizer
      New Eyes on the Universe: SKA & ngVLA
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 銀河団Abell3322中のHead-tail銀河を使ったプラズマ診断2023

    • Author(s)
      藏原昂平, 赤堀卓也、大村匠、吉浦伸太郎、滝沢元和、酒見はる香
    • Organizer
      日本天文学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 国内L帯VLBI観測に向けたVERA水沢局上部機器室内の低周波電波環境調査と今後のL帯VLBI観測計画2023

    • Author(s)
      藏原昂平, 小山友明, 砂田和良, 小林秀行, 正岡滉人, 亀谷收, 寺澤敏夫, 赤堀卓也, 寺家孝明, 秦和弘, 廣田朋也, 新沼浩太郎, 今井裕, 中西裕之, 岳藤一宏, 村田泰宏
    • Organizer
      VLBI懇談会シンポジウム2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Elucidating co-evolutions among AGN, galaxies, and ICM from an AGN survey with VERA2023

    • Author(s)
      A. Oki, H. Okino, T. Akahori, K. Kurahara, M. Honma, K. Hada, H. Nagai, K. Niinuma, T. Kitayama, S. Ueda, M. Ishida
    • Organizer
      9th GALAXY EVOLUTION WORKSHOP
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Digging in young jets to elucidate clusters evolution from an AGN survey with VERA2023

    • Author(s)
      A. Oki, H. Okino, T. Akahori, K. Kurahara, M. Honma, K. Hada, H. Nagai, K. Niinuma, T. Kitayama, S. Ueda, M. Ishida
    • Organizer
      Black Hole Astrophysics with VLBI 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 衝突早期の銀河団CIZA1359に付随する新しい拡散電波源の発見2023

    • Author(s)
      K. Kurahara, T. Akahori, R. Kale, H. Akamatsu, Y. Fujita, L. Gu, H. Intema, K. Nakazawa, N. Okabe, Y. Omiya, V. Parekh, T. Shimwell, M. Takizawa, R. van Weeren
    • Organizer
      SKA-Japanワークショップ 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 衝突早期の銀河団CIZA1359で見つかった新しい電波レリック候補2023

    • Author(s)
      藏原昂平, 赤堀卓也, Kale Ruta, 赤松弘規, Gu Liyi, 藤田裕, Intema Huib, Van Weeren Reinout, 中澤知洋, 大宮悠希, 岡部信広, Patekh Viral, Shimwell Timothy, 滝沢元和
    • Organizer
      日本天文学会2023年春季年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Evolution and feedback of the central AGN core in the Phoenix galaxy cluster: toward a VLCOP AGN survey2023

    • Author(s)
      大木愛花, 沖野大貴, 赤堀卓也, 藏原昂平, 秦和弘, 本間 希樹, 永井洋, 新沼浩太郎, 北山哲, 上田周太朗, 石田学
    • Organizer
      宇宙電波懇談会シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] VLBI 観測によるほうおう座銀河団中心の AGN 調査2023

    • Author(s)
      大木愛花, 沖野大貴, 赤堀卓也, 藏原昂平, 秦和弘, 本間 希樹, 永井洋, 新沼浩太郎, 北山哲, 上田周太朗, 石田学
    • Organizer
      日本天文学会2023年春季年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] VLBI observations of the central AGN core in the Phoenix galaxy cluster2023

    • Author(s)
      大木愛花, 沖野大貴, 赤堀卓也, 藏原昂平, 秦和弘, 本間 希樹, 永井洋, 新沼浩太郎, 北山哲, 上田周太朗, 石田学
    • Organizer
      SKA-Japanワークショップ2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] A candidate of sloshing-induced radio emission in CIZA J1410.4-42462023

    • Author(s)
      赤堀卓也, 大木愛花, 藏原昂平, 赤松弘規
    • Organizer
      SKAJPワークショップ2023
    • Related Report
      2022 Annual Research Report
  • [Presentation] 衝突早期の銀河団CIZA1359に付随する新しい拡散電波源の発見2023

    • Author(s)
      藏原昂平, 赤堀卓也, Kale Ruta, 赤松弘規, Gu Liyi, 藤田裕, Intema Huib, Van Weeren Reinout, 中澤知洋, 大宮悠希, 岡部信広, Patekh Viral, Shimwell Timothy, 滝沢元和
    • Organizer
      宇宙電波懇談会シンポジウム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phoenix rising from the ashes; co-existence of violent cooling and AGN feedback2022

    • Author(s)
      T. Akahori
    • Organizer
      IAU General Assembly 2022 FM6
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Diffuse radio source in CIZA J1358.9-47502022

    • Author(s)
      K. Kurahara, T. Akahori, R. Kale, H. Akamatsu, Y. Fujita, L. Gu, H. Intema, K. Nakazawa, N. Okabe, Y. Omiya, V. Parekh, T. Shimwell, M. Takizawa, R. van Weeren
    • Organizer
      SPARCS XI: The Rise of Sky Surveys
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] VLBI観測によるJ2344-4243の中心構造の調査2022

    • Author(s)
      大木愛花, 沖野大貴, 赤堀卓也, 藏原昂平, 秦和弘, 本間 希樹, 永井洋, 新沼浩太郎, 北山哲, 上田周太朗, 石田学
    • Organizer
      VLBI懇談会シンポジウム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] A candidate of sloshing-induced radio emission in CIZA J1410.4-42462022

    • Author(s)
      赤堀卓也, 大木愛花, 藏原昂平, 赤松弘規
    • Organizer
      VLBI懇談会シンポジウム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Diffuse radio source candidate in CIZA J1358.9-47502022

    • Author(s)
      藏原昂平, 赤堀卓也, Kale Ruta, 赤松弘規, Gu Liyi, 藤田裕, Intema Huib, Van Weeren Reinout, 中澤知洋, 大宮悠希, 岡部信広, Patekh Viral, Shimwell Timothy, 滝沢元和
    • Organizer
      VLBI懇談会シンポジウム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 銀河団磁場と衝突するジェットの3次元磁気流体シミュレーション2022

    • Author(s)
      大村匠、James O. Chibueze、酒見はる香、町田真美、赤松弘規、赤堀卓也、中西裕之、Vira Parekh、Ruby van Rooyen、竹内努
    • Organizer
      2021年度国立天文台CfCAユーザーズミーティング
    • Related Report
      2021 Annual Research Report
  • [Presentation] Interaction between an AGN jet and the intra-cluster magnetic field seen by MeerKAT: II. Numerical Simulation2021

    • Author(s)
      Ohmura, T., Chibueze, James O., Sakemi, H., Machida, M., Akamatsu, H., Akahori, T., Nakanishi, H., Parekh, V., van Rooyen, R., Takeuchi, T. T.
    • Organizer
      Linking the Science of Large Interferometer in the 2030s
    • Related Report
      2021 Annual Research Report
  • [Presentation] 銀河団磁場との相互作用によって折れ曲がるジェット2021

    • Author(s)
      大村匠、James O. Chibueze、酒見はる香、町田真美、赤松弘規、赤堀卓也、中西裕之、Vira Parekh、Ruby van Rooyen、竹内努
    • Organizer
      日本天文学会2021年秋季年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Magnetohydrodynamic simulations of the interaction between the jet and the intra-cluster magnetic field2021

    • Author(s)
      Ohmura, T., Chibueze, James O., Sakemi, H., Machida, M., Akamatsu, H., Akahori, T., Nakanishi, H., Parekh, V., van Rooyen, R., Takeuchi, T. T.
    • Organizer
      Extragalactic jets on all scales - launching, propagation, terminanion
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MeerKAT view of an interaction between radio jets and intra-cluster magnetic layers2021

    • Author(s)
      Hiroki Akamatsu, James O. Chibueze, Haruka Sakemi, Takumi Ohmura, Mami Machida, Takuya Akahori, Hiroyuki Nakanishi, Viral Parekh, Ruby van Rooyen and Tsutomu T. Takeuchi
    • Organizer
      A new window on the radio emission from galaxies, clusters and cosmic web
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Merger induced interaction between jets and intracluster magnetic fields2021

    • Author(s)
      Hiroki Akamatsu, James O. Chibueze, Haruka Sakemi, Takumi Ohmura, Mami Machida, Takuya Akahori, Hiroyuki Nakanishi, Viral Parekh, Ruby van Rooyen and Tsutomu T. Takeuchi
    • Organizer
      A new window on the radio emission from galaxies, clusters and cosmic web
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interaction between an AGN jet and the intra-cluster magnetic field seen by MeerKAT2021

    • Author(s)
      H. Sakemi, J.O. Chibueze, T. Ohmura, M. Machida, H. Akamatsu, T. Akahori, H. Nakanishi, V. Parekh, R. van Rooyen, T.T. Takeuchi
    • Organizer
      East Asia SKA Workshop 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interaction between an AGN jet and the intra-cluster magnetic field seen by MeerKAT: I. Observation2021

    • Author(s)
      Sakemi, H., Chibueze, J.O., Ohmura, T., Machida, M., Akamatsu, H., Akahori, T., Nakanishi, H., Parekh, V., van Rooyen, R., and Takeuchi, T. T.
    • Organizer
      Linking the science of large interferometers in the 2030s
    • Related Report
      2021 Annual Research Report
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Published: 2021-04-28   Modified: 2025-01-30  

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