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多波長大規模サーベイによる活動銀河核・銀河の共進化の解明

Research Project

Project/Area Number 17740121
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionKyoto University

Principal Investigator

上田 佳宏  Kyoto University, 大学院・理学研究科, 准教授 (10290876)

Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2007: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywords活動銀河核 / ブラックホール / X線サーベイ
Research Abstract

XMMニュートン衛星を用いたセレンディピタスサーベイの結果をまとめ、X線源の数かぞえ(log N logS関係)をこれまでにない範囲にわたって過去最高の精度で決定した(Carrera, et. al. 2007)。この結果は、活動銀河核(AGN)の進化を精密に制限する上で重要な基礎データとなる。また、XMMニュートンディープサーベイ(SXDS)計画を進め、電波と中間赤外線を用いて2型クエーサーを探査し、そのかなりの割合が非常に大きな吸収を受けていてX線さえ検出されていない「コンプトン厚AGN」であること、その数密度が1型AGNのそれに匹敵する可能性があることを見出した(Martinez-Sansigre, et. al. 2007)。これは遠方宇宙において、ブラックホール成長がガスや塵に隠された状態で起きていることを意味し、共進化を考える上で重要な発見である。さらにSXDS計画において可視天文学者と協力し、広がったライマンα天体における活動銀河の割合を調査した(Saito, et. al. 2008)。これら深宇宙サーベイと平行し、近傍宇宙における隠されたAGNの探査を進めた。Swift衛星による硬X線サーベイで見つかった天体を「すざく」による追求観測し、分厚い卜ーラスに深く埋もれた新しいタイプのAGNを発見した(Ueda, et. al. 2007)。これらの新天体も含めたSwiftサーベイの完全サンプルに対し、南アフリカ天文台で系統的な可視分光観測を進めた。また、これまでに得られたX線サンプルを用い、過去最高の精度でAGNのX線光度関数を決定し、その結果について、ギリシア・アメリカで行なわれた国際会議で招待講演を行なった。

Report

(3 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (21 results)

All 2008 2007 2006 2005

All Journal Article (19 results) (of which Peer Reviewed: 9 results) Presentation (2 results)

  • [Journal Article] The Cosmic MeV Gamma-Ray Background and Hard X-Ray Spectra of Active Galactic Nuclei: Implications for the Origin of Hot AGN Coronae2008

    • Author(s)
      Inoue, Y., Totani, T., Ueda, Y.
    • Journal Title

      The Astrophysical Journal 672

      Pages: 5-8

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Wide-Band X-Ray Spectroscopy of the Seyfert2 AGN in NGC 49452008

    • Author(s)
      Itoh, T., et. al.
    • Journal Title

      Publications of the Astronomical Society of Japan 60

      Pages: 251-262

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deep Spectroscopy of Systematically Surveyed Extended Lyα Sources at z^3-52008

    • Author(s)
      Saito, T., et. al.
    • Journal Title

      The Astrophysical Journal 675

      Pages: 1076-1094

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Subara/XMM-Newton Deep Survey (SXDS). VI.Properties of Active Galactic Nuclei Selected by Optical Variability2008

    • Author(s)
      Morokuma, T., et. al.
    • Journal Title

      The Astrophysical Journal 676

      Pages: 121-130

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Subaru/XMM-Newtoi Deep Survey (SXDS). V. Optically Faint Variable Object Survey2008

    • Author(s)
      Morokuma, T., et. al.
    • Journal Title

      The Astrophysical Journal 676

      Pages: 163-183

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The XMM-Newton serendipitous survey. III. The AXIS X-ray source counts and angular clustering2007

    • Author(s)
      Carrera, F.J., et. al.
    • Journal Title

      Astronomy and Astrophysics 469

      Pages: 27-46

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evidence for a large fraction of Compton-thick quasars at high redshift2007

    • Author(s)
      Martinez-Sansigre, A, et. al.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society 379

      Pages: 6-10

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cosmic X-ray background: An old, yet new story2007

    • Author(s)
      Ueda, Y.
    • Journal Title

      Nature Physics 3

      Pages: 450-451

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Observations of Active Galactic Nuclei Detected in the Swift BAT Survey: Discovery of a New Type of Buned Supermassive Black Holes2007

    • Author(s)
      Ueda, Y., et. al.
    • Journal Title

      The Astrophysical Journal 664

      Pages: 79-82

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spectral Statistics and Local Luminosity Function of a Complete Hard X-Ray Sample of the Brightest Active Galactic Nuclei2006

    • Author(s)
      Shinozaki, K., Miyaji, T., Ishisaki, Y., Ueda, Y., Ogasaka
    • Journal Title

      The Astronomical Journal 131

      Pages: 2843-2858

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Host Galaxies of Hard X-Ray-Selected Type 2 Active Galactic Nuclei at Intermediate Redshifts2006

    • Author(s)
      Kiuchi, G., Ohta, K., Akiyama, M., Aoki, K., Ueda, Y.
    • Journal Title

      The Astrophysical Journal 647

      Pages: 892-900

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Radio imaging of the Subaru/XMM-Newton Deep Field-I. The 100-μJy catalogue, optical identifications, and the nature of the faint radio source population2006

    • Author(s)
      Simpson, C., et al.
    • Journal Title

      Monthly Notice of Royal Astronomical Society 372

      Pages: 741-757

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Suzaku Discovery of Iron Absorption Lines in Outburst Spectra of the X-Ray Transient 4U 1630-4722006

    • Author(s)
      Kubota, A. et al.
    • Journal Title

      Publication of Astronomical Society of Japan 59

      Pages: 185-198

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Suzaku Observation of Two Ultraluminous X-Ray Sources in NGC 13132006

    • Author(s)
      Mizuno, T et al.
    • Journal Title

      Publication of Astronomical Society of Japan 59

      Pages: 257-267

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Suzaku Observations of the Hard X-Ray Variability of MCG -6-30-15:the Effects of Strong Gravity around a Kerr Black Hole2006

    • Author(s)
      Miniutti, G. et al.
    • Journal Title

      Publication of Astronomical Society of Japan 59

      Pages: 315-367

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Supermassive black hole mass functions at intermediate redshifts from spheroid and AGN luminosity functions2006

    • Author(s)
      Tamura, Naoyuki, Ohta, Kouji, Ueda, Yoshihiro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society 365

      Pages: 134-134

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Discovery of a large-scale clumpy structure around the Lynx supercluster at z 1.272005

    • Author(s)
      Nakata, F. et al.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society 357

      Pages: 1357-1357

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Discovery of multiple ultra-luminous X-ray sources in the galaxy KUG 0214-0572005

    • Author(s)
      Watson, M.G., Roberts, T.P., Akiyama, M., Ueda, Y.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society 437

      Pages: 899-899

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The ASCA Medium Sensitivity Survey (The GIS Catalog Project) : Source Catalog II.2005

    • Author(s)
      Ueda, Y. et al.
    • Journal Title

      The Astrophysical Journal Supplement Series 161

      Pages: 161-161

    • Related Report
      2005 Annual Research Report
  • [Presentation] Contribution of Compton thick AGN to CXB2007

    • Author(s)
      Ueda, Y.
    • Organizer
      The Suzaku X-ray Universe
    • Place of Presentation
      Catamaran Hotel, San Diego, CA, USA
    • Year and Date
      2007-12-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] AGN Luminosity Function and Evolution2007

    • Author(s)
      Ueda, Y.
    • Organizer
      "X-ray Surveys: Evolution of Accretion, Star-Formation and the Large Scale Structure"
    • Place of Presentation
      Rodos Palace Hotel, Rodos island, Greece
    • Year and Date
      2007-07-02
    • Related Report
      2007 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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