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2021 Fiscal Year Research-status Report

Interstellar Turbulence by Supermassive Black-Hole Jets, Winds, and Radiation

Research Project

Project/Area Number 19K03862
Research InstitutionUniversity of Tsukuba

Principal Investigator

Wagner Alexander  筑波大学, 計算科学研究センター, 助教 (20634463)

Project Period (FY) 2019-04-01 – 2023-03-31
Keywords銀河進化 / 星形成 / ブラックホール / 相対論的ジェット / 乱流 / 高性能計算
Outline of Annual Research Achievements

1) We discovered a massive molecular outflow carrying 75% of the gas in the central region of galaxy B2 0258+35. The outflow coincides spatially with a radio jet, the energy source. The data confirms predictions of our simulations that low-power jets can drive such outflows and affect nuclear gas reservoirs, a vital mechanism for the co-evolution of black holes and galaxies. (Murthy, S., Morganti, R., Wagner, A. Y. et al. 2022, Nature Astronomy, 6, 488).

2) We constructed the first models of the putative Milky Way AGN jet that inflated the FERMI bubbles that reproduce the new MeerKAT radio data and eROSITA X-ray data of the Milky Way. The results provide predictions for the spin of the supermassive black hole of our galaxy (Sgr A*), inferred from recent Event Horizon Telescope observations (G. N. Cecil, A. Y. Wagner, et al. 2021, ApJ, 922, 2).

3) We established how AGN jet driven turbulence in gas-rich disc galaxies modify the star-formation rate in the disc. We applied the statistical theory of star-formation to the turbulent discs of our simulated radio-galaxies and found that the effect of the modification of turbulence by the jets on star formation is complicated but non-negligible. Depending on the orientation of the jet, star-formation can be slightly suppressed or slightly enhanced compared to the case without jets. This is the first quantitative study of feedback by AGN-driven turbulence, which may prove to be a new mode of AGN feedback, important in the majority of intermediate and low-mass galaxies (Mandal, A. et al, incl. Wagner, A. Y., 2021, MNRAS, 508, 4, 4738.)

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

While productivity has been high and some collaborations have progressed smoothly, the work on *magneto*-hydrodynamic jet-induced turbulence simulations, the last major step planned in the original proposal, have not yet been performed, mainly due to the inability to visit collaborators in Australia, India, and Paris in order to work out the details of these complicated simulations. We currently envisage the simulations to be complete by the end of September this year. If border restrictions permit, collaboration visits will be made before this time. The other reason this final step of the project proceeded slower than anticipated has been the lack of a Master or PhD student available to the PI.

Strategy for Future Research Activity

The main objective for the next year of this grant is to complete the magneto hydrodynamical simulations of AGN jet induced turbulence in gas-rich disc galaxies. The analysis to be performed on the results of these simulations will be similar to those we performed in our we published in 2021 and will investigate the evolution of the gas properties and staff information rate in the Galaxy as a result of stirring and compression by the jet. The successful completion of the simulations contains two main challenges, one is to initialize and relax the magnetic field in the galaxy and one is to inject magnetic fields in with the jet. The first challenge has mostly been overcome, but the second challenge requires further investigating and testing. The timeline for this last step in the project is as follows:
2022/04-07: Complete setup for the initialization and injection of magnetic fields
2022/08: Perform magneto-hydrodynamic simulations complementary to the purely hydrodynamic ones. Parameters include jet power and jet inclination.
2022/09-12: Analyze simulation output for dependence of star-formation on parameters and summarize into a paper. Collaboration visits to Australia, India, and Paris, if possible.
2022/01-03: Present results at national and international conferences, including the Astronomical Society of Japan.
In parallel we shall conduct simulations of jets of various internal Mach numbers propagating into the ISM of a proto-galaxy in order to establish the effect of jet-driven turbulence in galaxies in the distant universe that are still forming.

Causes of Carryover

The main reason for incurring rollover funds is the cancellation of the in-person attendance of international conferences and collaboration visits to Canberra and Paris due to the coronavirus pandemic and the related travel restrictions imposed by the Ministry of Foreign Affairs.

Main usage during the final year is travel to visit domestic and international collaborators and work with them to complete the complicated simulation setups required for the last part of this project. The three main destinations for collaboration are: 1) the ANU (RSAA) Canberra, Australia to work with Geoffrey Bicknell on the magnetic jet plasma 2) IUCAA Pune, India, to work with Dipanjan Mukherjee on the general setup of the magnetized galactic discs and 3) IAP Paris, France, to engage in discussions with Yohan Dubois, Joseph Silk, and Matt Lehnert, and on the importance of AGN-driven turbulence-regulated star-formation in galaxy populations. Border restrictions permitting, I shall conduct at most 2 out of the 3 travels during the summer months. After September, usage of the grant will consist mainly of travel to as many domestic and international conferences as possible.

  • Research Products

    (16 results)

All 2022 2021 Other

All Journal Article (9 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Cold gas removal from the centre of a galaxy by a low-luminosity jet2022

    • Author(s)
      Murthy Suma、Morganti Raffaella、Wagner Alexander Y.、Oosterloo Tom、Guillard Pierre、Mukherjee Dipanjan、Bicknell Geoffrey
    • Journal Title

      Nature Astronomy

      Volume: 6 Pages: 488~495

    • DOI

      10.1038/s41550-021-01596-6

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impact of relativistic jets on the star formation rate: a turbulence-regulated framework2021

    • Author(s)
      Mandal Ankush、Mukherjee Dipanjan、Federrath Christoph、Nesvadba Nicole P H、Bicknell Geoffrey V、Wagner Alexander Y、Meenakshi Moun
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 508 Pages: 4738~4757

    • DOI

      10.1093/mnras/stab2822

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tracing the Ionization Structure of the Shocked Filaments of NGC 62402021

    • Author(s)
      Medling Anne M.、Kewley Lisa J.、Calzetti Daniela、Privon George C.、Larson Kirsten、Rich Jeffrey A.、Armus Lee、Allen Mark G.、Bicknell Geoffrey V.、D?az-Santos Tanio、Heckman Timothy M.、Leitherer Claus、Max Claire E.、Rupke David S. N.、Treister Ezequiel、Messias Hugo、Wagner Alexander Y.
    • Journal Title

      The Astrophysical Journal

      Volume: 923 Pages: 160~160

    • DOI

      10.3847/1538-4357/ac2ebb

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tracing the Milky Way’s Vestigial Nuclear Jet2021

    • Author(s)
      Cecil Gerald、Wagner Alexander Y.、Bland-Hawthorn Joss、Bicknell Geoffrey V.、Mukherjee Dipanjan
    • Journal Title

      The Astrophysical Journal

      Volume: 922 Pages: 254~254

    • DOI

      10.3847/1538-4357/ac224f

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). IV. Rapidly Growing (Super)Massive Black Holes in Extremely Radio-loud Galaxies2021

    • Author(s)
      Ichikawa Kohei、Yamashita Takuji、Toba Yoshiki、Nagao Tohru、Inayoshi Kohei、Charisi Maria、He Wanqiu、Wagner Alexander Y.、et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 921 Pages: 51~51

    • DOI

      10.3847/1538-4357/ac1b26

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Resolved simulations of jet ISM interaction: Implications for gas dynamics and star formation2021

    • Author(s)
      Mukherjee Dipanjan、Bicknell Geoffrey V.、Wagner Alexander Y.
    • Journal Title

      Astronomische Nachrichten

      Volume: 342 Pages: 1140~1145

    • DOI

      10.1002/asna.20210061

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Shock-multicloud interactions in galactic outflows II. Radiative fractal clouds and cold gas thermodynamics2021

    • Author(s)
      Banda-Barragan W E、Bruggen M、Heesen V、Scannapieco E、Cottle J、Federrath C、Wagner A Y
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 506 Pages: 5658~5680

    • DOI

      10.1093/mnras/stab1884

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Jet-driven AGN feedback on molecular gas and low star-formation efficiency in a massive local spiral galaxy with a bright X-ray halo2021

    • Author(s)
      Nesvadba N. P. H.、Wagner A. Y.、Mukherjee D.、Mandal A.、Janssen R. M. J.、Zovaro H.、Neumayer N.、Bagchi J.、Bicknell G.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 654 Pages: A8~A8

    • DOI

      10.1051/0004-6361/202140544

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relating gas dynamics to star formation in the central region of the barred spiral galaxy NGC 6132021

    • Author(s)
      Sato Keisuke、Miyamoto Yusuke、Kuno Nario、Salak Dragan、Wagner Alexander Y、Seta Masumichi、Nakai Naomasa
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Pages: 1019~1035

    • DOI

      10.1093/pasj/psab060

    • Peer Reviewed
  • [Presentation] Kpc-scale AGN Feedback2021

    • Author(s)
      Wagner Alexander
    • Organizer
      多重AGNサイエンスワークショップ
  • [Presentation] Exploring the regulation of star-formation through AGN-jet-driven turbulence2021

    • Author(s)
      Wagner Alexander
    • Organizer
      銀河星形成研究会 2021 (Galactic Star Formation 2021)
  • [Presentation] Galaxy-scale AGN Feedback2021

    • Author(s)
      Wagner Alexander
    • Organizer
      超巨大ブラックホール研究会:その実態・影響・起源の全貌解明に向けて
  • [Presentation] Mechanical AGN feedback: radio-mode IGM and kpc-scale ISM interactions2021

    • Author(s)
      Wagner Alexander
    • Organizer
      ALMA workshop 2021 "Cold outflows near and far: crossroads of our current understanding"
    • Invited
  • [Presentation] Probing jet-ISM interactions and the physics of AGN feedback in the radio galaxy IC 5063 with source-tailored hydrodynamic simulations2021

    • Author(s)
      Wagner Alexander
    • Organizer
      IAU Symposium 362 "The predictive power of computational astrophysics as a discovery tool'"
    • Int'l Joint Research
  • [Presentation] Simulating the jet-ISM interaction in GPS & CSS galaxies2021

    • Author(s)
      Dipanjan Mukherjee、Wagner Alexander、Bicknell Geoffrey
    • Organizer
      6th Workshop on Compact Steep Spectrum and GHz-Peaked Spectrum Radio Sources
    • Int'l Joint Research / Invited
  • [Remarks] MWAGN: The Milky Way Supermassive Black Hole Jet

    • URL

      https://www2.ccs.tsukuba.ac.jp/Astro/Members/ayw/research/mwagn/

URL: 

Published: 2022-12-28  

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