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Study on variability mechanisms of quasar activity

Research Project

Project/Area Number 15K05020
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Astronomy
Research InstitutionShinshu University

Principal Investigator

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

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsAGNアウトフロー / クェーサー吸収線
Outline of Final Research Achievements

AGN outflow wind, a gas stream from the accretion disk of quasar central engines that are accelerated by radiation pressure, shows time variability, although its origin is not clearly understood. We verified one of the most plausible scenarios for the variability (variability ionization scenario; VIS) through unique observations. Our observations suggest a) variability pattern in outflow wind and quasar luminosity are synchronized and b) an outflow wind has the internal structure whose physical scale is smaller than separation distance between sightlines of two lensed images of quasars. These results support the VIS scenario with a self-shielding effect as an additional mechanism, although the gas motion of outflow wind could partially contribute to the change of outflow wind.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report

Research Products

(28 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research Journal Article Presentation

  • [Int'l Joint Research] ペンシルベニア州立大学(アメリカ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] 上海天文台/北京大学(中国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] 韓国天文研究院(韓国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] ペンシルベニア州立大学/カレッジ・オブ・チャールストン(アメリカ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] チリ・カトリック大学(チリ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] 韓国天文研究院(韓国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] ペンシルベニア州立大学/カレッジ・オブ・チャールストン(アメリカ)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] チリ・カトリック大学(チリ)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Spectroscopic Observations of the Outflowing Wind in the Lensed Quasar SDSS J1001+50272018

    • Author(s)
      Misawa Toru、Inada Naohisa、Oguri Masamune、Charlton Jane C.、Eracleous Michael、Koyamada Suzuka、Itoh Daisuke
    • Journal Title

      The Astrophysical Journal

      Volume: 854 Pages: 1-14

    • DOI

      10.3847/1538-4357/aaa66e

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discovery of Strong Balmer Line Absorption in Two Luminous LoBAL Quasars at z ~ 1.52018

    • Author(s)
      Andreas Schulze, Toru Misawa, Wenwen Zuo, Xue-Bing Wu
    • Journal Title

      The Astrophysical Journal

      Volume: 853 Pages: 1-9

    • DOI

      10.3847/1538-4357/aaa7f0

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resolving the Internal Structure of Circumgalactic Medium Using Gravitationally Lensed Quasars ,2017

    • Author(s)
      Koyamada, S., Misawa, T., Inada, N., Oguri, M., Kashikawa, N. & Okoshi, K.
    • Journal Title

      The Astrophysical Journal

      Volume: 851 Pages: 88-101

    • DOI

      10.3847/1538-4357/aa9a3a

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical variability properties of mini-BAL and NAL quasars2016

    • Author(s)
      Takashi Horiuchi, Toru Misawa, Tomoki Morokuma, Suzuka Koyamada, Kazuma Takahashi, Hisashi Wada
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 68 Pages: 1-19

    • DOI

      10.1093/pasj/psw044

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] MULTI-SIGHTLINE OBSERVATION OF NARROW ABSORPTION LINES IN LENSED QUASAR SDSS J1029+26232016

    • Author(s)
      Toru Misawa, Cristian Saez, Jane C. Charlton, Michael Eracleous, George Chartas, Franz E. Bauer, Naohisa Inada, Hisakazu Uchiyama
    • Journal Title

      The Astrophysical Journal

      Volume: 825 Pages: 1-19

    • DOI

      10.3847/0004-637x/825/1/25

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Wide-angle Outflow of the Lensed z = 1.51 AGN HS 0810+25542016

    • Author(s)
      G. Chartas, M. Cappi, F. Hamann, M. Eracleous, S. Strickland, M. Giustini, T. Misawa
    • Journal Title

      The Astrophysical Journal

      Volume: 824 Pages: 1-14

    • DOI

      10.3847/0004-637x/824/1/53

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 狭吸収線を用いた AGN アウトフロー加速の直接検出の試み2018

    • Author(s)
      三澤透, Michael Eracleous, Jane Charlton, 柏川伸成
    • Organizer
      日本天文学会2018年春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] クェーサーアウトフロー角度依存モデルの検証2018

    • Author(s)
      伊東大輔, 三澤透, 堀内貴史
    • Organizer
      日本天文学会2018年春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] BALQSO 視線上における intrinsic NAL の探査2017

    • Author(s)
      伊東大輔, 三澤透, 堀内貴史
    • Organizer
      日本天文学会2017年春季年会
    • Place of Presentation
      九州大学
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Physical Properties of Narrow and mini-Broad Absorption Line Systems2017

    • Author(s)
      Toru Misawa, Michael Eracleous, Jane C. Charlton, Naohisa Inada, Masamune Oguri
    • Organizer
      European Week of Astronomy and Space Science 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Geometrical structure of AGN outflow winds2017

    • Author(s)
      Daisuke Itoh, Toru Misawa, Takashi Horiuchi
    • Organizer
      East-Asia AGN Workshop 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] レンズクエーサーを用いた多視線分光観測による CGM の内部構造の調査2017

    • Author(s)
      小山田涼香, 三澤透, 稲田直久, 大栗真宗, 柏川伸成, 大越克也
    • Organizer
      日本天文学会2017年秋季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] クェーサーのアウトフローに見られる時間変動傾向の起源2017

    • Author(s)
      堀内 貴史, 三澤 透, 小山田 涼香, 和田 久, 伊東大輔, 諸隈 智貴
    • Organizer
      日本天文学会2017年春季年会
    • Place of Presentation
      九州大学
    • Related Report
      2016 Research-status Report
  • [Presentation] Multi-Sightline Observation of the Outflow Winds in Lensed Quasar SDSS J1029+2622016

    • Author(s)
      Toru Misawa
    • Organizer
      Workshop on Theoretical Astronomy 2016
    • Place of Presentation
      富山大学
    • Year and Date
      2016-11-15
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Resolving the Internal Structure of the Outflow Winds from Gravitationally Lensed Quasars2016

    • Author(s)
      T. Misawa, C. Saez, J. C. Charlton, M. Eracleous, G. Chartas, F. E. Bauer, N. Inada, H. Uchiyama
    • Organizer
      East-Asia AGN Workshop 2016
    • Place of Presentation
      ソウル大学(韓国)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Multi-Sightline Observation of Outflow Winds in Lensed Quasars2016

    • Author(s)
      Toru Misawa
    • Organizer
      IGM Tomography Workshop 2016
    • Place of Presentation
      東京大学 IPMU
    • Year and Date
      2016-08-30
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] TMT時代の高分散分光データを用いた銀河/AGN研究2016

    • Author(s)
      三澤透
    • Organizer
      第3回 銀河進化研究会
    • Place of Presentation
      東北大学
    • Year and Date
      2016-06-03
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] AGN Outflow の多視線観測による Kinetic Luminosity の不定性評価2016

    • Author(s)
      三澤透, Cristian Saez, Jane C. Charlton, George Chartas, 稲田直久
    • Organizer
      日本天文学会2016年春季年会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
  • [Presentation] 分光モニター観測によるクェーサーアウトフローガスの調査2015

    • Author(s)
      堀内 貴史, 三澤 透, 小山田 涼香, 高橋 一馬, 和田 久, 諸隈 智貴
    • Organizer
      日本天文学会2015年秋季年会
    • Place of Presentation
      甲南大学
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
  • [Presentation] レンズクエーサーを用いた多視線分光観測による CGM の空間分布調査2015

    • Author(s)
      小山田涼香, 三澤透, 稲田直久, 大栗真宗, 柏川伸成
    • Organizer
      日本天文学会2015年秋季年会
    • Place of Presentation
      甲南大学
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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