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Study on AGN feedback effect through the outflows and radiation

Research Project

Project/Area Number 18K03698
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 16010:Astronomy-related
Research InstitutionShinshu University

Principal Investigator

Misawa Toru  信州大学, 学術研究院総合人間科学系, 教授 (60513447)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
KeywordsAGNアウトフロー / クェーサー吸収線 / クェーサー近接効果
Outline of Final Research Achievements

We examined the feedback effects of quasars by dividing them into the small-scale effect of outflow on the host galaxy and the large-scale effect of UV radiation on the intergalactic medium. We obtained the following results: 1) velocities of outflow winds rarely change, 2) quasars with higher luminosity tend to have larger outflow velocities, 3) outflow winds can reach up to 100 kpc scale in circum-galactic medium, and 4) the ionization state of the intergalactic medium near the quasars depends on the individual environment. All these results suggest that quasars indeed have significant feedback effects on their surroundings.

Academic Significance and Societal Importance of the Research Achievements

遠方宇宙に存在する明るい銀河中心領域(クェーサー)は、その莫大なエネルギー放出を通して周辺領域に影響(フィードバック)を及ぼしている。本研究では、この影響を大小二つのスケールに分けることによって詳細に調査した。小スケール・フィードバックで重要な役割を果たすアウトフローについては、長期モニター観測で明確な加速傾向が得られなかったにも関わらず、別の解析では100kpcスケールにまで到達する可能性があるという驚くべき結果が得られた。一方、紫外輻射による大スケール・フィードバックは、個々のクェーサー環境に強く依存する可能性があることが分かった。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (22 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (7 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (10 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] Pennsylvania State University(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] National Institute for Astrophysics(イタリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Pennsylvania State University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] National Institute for Astrophysics(イタリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ペンシルベニア州立大学(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Origin of Weak Mg ii and Higher-ionization Absorption Lines in Outflows from Intermediate-redshift Dwarf Galaxies2021

    • Author(s)
      Fujita Akimi、Misawa Toru、Charlton Jane C.、Meiksin Avery、Low Mordecai-Mark Mac
    • Journal Title

      The Astrophysical Journal

      Volume: 909 Issue: 2 Pages: 157-157

    • DOI

      10.3847/1538-4357/abe2a4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for intrinsic NALs in BAL/mini-BAL quasar spectra2020

    • Author(s)
      Itoh, Daisuke; Misawa, Toru; Horiuchi, Takashi; Aoki, Kentaro Abstract
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 499 Issue: 3 Pages: 3094-3110

    • DOI

      10.1093/mnras/staa2793

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Comparison of Properties of Quasars with and without Rapid Broad Absorption Line Variability2020

    • Author(s)
      Horiuchi Takashi、Morokuma Tomoki、Misawa Toru、Hanayama Hidekazu、Kawaguchi Toshihiro
    • Journal Title

      The Astronomical Journal

      Volume: 159 Issue: 5 Pages: 237-237

    • DOI

      10.3847/1538-3881/ab83f5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-dimensional Distribution Map of H i Gas and Galaxies around an Enormous Lyα Nebula and Three QSOs at z = 2.3 Revealed by the H i Tomographic Mapping Technique2020

    • Author(s)
      Mukae S., Ouchi M., Cai Z., Lee K-G., and 20 coauthors including Suzuki, Nao
    • Journal Title

      The Astrophysical Journal

      Volume: 896 Issue: 1 Pages: 45-45

    • DOI

      10.3847/1538-4357/ab8db7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The WISSH quasars project. VI. Fraction and properties of BAL quasars in the hyper-luminosity regime2019

    • Author(s)
      Bruni G.、Piconcelli E.、Misawa T.、Zappacosta L.、Saturni F. G.、Vietri G.、Vignali C.、Bongiorno A.、Duras F.、Feruglio C.、Tombesi F.、Fiore F.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 630 Pages: 1-17

    • DOI

      10.1051/0004-6361/201834940

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Probing quasar winds using intrinsic narrow absorption lines2019

    • Author(s)
      Culliton Chris、Charlton Jane、Eracleous Mike、Ganguly Rajib、Misawa Toru
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 488 Issue: 4 Pages: 4690-4731

    • DOI

      10.1093/mnras/stz1642

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct Measurement of Quasar Outflow Wind Acceleration2019

    • Author(s)
      Toru Misawa, Michael Eracleous, Jane C. Charlton, Nobunari Kashikawa
    • Journal Title

      The Astrophysical Journal

      Volume: 870 Issue: 2 Pages: 68-68

    • DOI

      10.3847/1538-4357/aaf0fe

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] クェーサー付随 NAL 吸収体の幾何的分布に関する調査2020

    • Author(s)
      伊東大輔、三澤透、堀内貴史、青木賢太郎
    • Organizer
      日本天文学会2020年秋季年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The Correlation between Broad Absorption Line Variability and Quasar Properties2020

    • Author(s)
      Horiuchi Takashi、Morokuma Tomoki、Misawa Toru、Hanayama Hidekazu、Kawaguchi Toshihiro
    • Organizer
      GALAXY EVOLUTION WORKSHOP 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] BAL の変動率とクェーサーの物理量との相関関係2020

    • Author(s)
      堀内貴史、花山秀和、諸隈智貴、三澤透
    • Organizer
      日本天文学会2020年春季年会
    • Related Report
      2019 Research-status Report
  • [Presentation] MCMC 法を用いたアウトフロー吸収線の model-fit 方法の提案2019

    • Author(s)
      石田大、三澤透、伊東大輔、堀内貴史
    • Organizer
      日本天文学会2019年秋季年会
    • Related Report
      2019 Research-status Report
  • [Presentation] BAL 視線上に位置する intrinsic NAL absorber の光源距離の概算2019

    • Author(s)
      伊東大輔、三澤透、石田大、堀内貴史
    • Organizer
      日本天文学会2019年秋季年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Properties of Narrow Absorption Line Systems in AGN Outflow2019

    • Author(s)
      T. Misawa, M. Eracleous, J. C. Charlton, N. Kashikawa, C. Saez, G. Chartas, F. E. Bauer, N. Inada, H. Uchiyama
    • Organizer
      Subaru 20th Anniversary
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Estimating a distance of intrinsic NAL absorber2019

    • Author(s)
      Daisuke Itoh, Toru Misawa, Dai Ishita, Takashi Horiuchi
    • Organizer
      Subaru 20th Anniversary
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] mini-BAL クェーサー UM675 で見られる時間変動とその起源2019

    • Author(s)
      石田大, 三澤透, 伊東大輔, 堀内貴史
    • Organizer
      日本天文学会2019年春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 高分散分光観測で挑む TMT 時代のサイエンスから要求される性能評価2019

    • Author(s)
      LEE INSEOB, 杉森加奈子, 三澤透
    • Organizer
      日本天文学会2019年春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 突発的な光度変動を示すクェーサーの多色測光モニター観測2018

    • Author(s)
      堀内貴史, 花山秀和, 諸隈智貴, 三澤透
    • Organizer
      日本天文学会2018年秋季年会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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