• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

X-ray spectral study of blackhole accretion disks

Research Project

Project/Area Number 19740113
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionShibaura Institute of Technology

Principal Investigator

KUBOTA Aya  Shibaura Institute of Technology, システム理工学部, 准教授 (00391938)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥600,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2007: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsX線天文学 / ブラックホール / 降着円盤 / 質量降着 / 質量放出 / 「すざく」衛星 / X線天文 / モデル計算
Research Abstract

Accretion disks around blackholes emit X-ray into the space. We utilized the Suzaku wide band data of several black holes, and evaluated how gravitational energy was released around black holes. We also calculated theoretical (optically thick) accretion disk models, which take disk vertical structure into account, and tested them with the Suzaku data of a high state black hole. Then we found that there is a missing key parameter, which plays an important role in the disk vertical structure.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (23 results)

All 2010 2009 2008 2007 Other

All Journal Article (21 results) (of which Peer Reviewed: 17 results) Presentation (2 results)

  • [Journal Article] Testing Accretion Disk Structure with Suzaku Data of LMC X-32010

    • Author(s)
      Kubota, Aya, Done Chris, Davis Shane W., Dotani Tadayasu, Mizuno Tsunefumi, Ueda Yoshihiro
    • Journal Title

      The Astrophysical Journal 714

      Pages: 860-867

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] TESTING ACCRETION DISK STRUCTURE WITH SUZAKU DATA OF LMC X-32010

    • Author(s)
      Aya Kubota, Chris Done, Shane W. Davis, Tadayasu Dotani, Tsunefumi Mizuno、 Yoshihiro Ueda
    • Journal Title

      The Astrophysical Journal 714

      Pages: 860-867

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Is the Black Hole in GX 339-4 Really Spinning Rapidly?2009

    • Author(s)
      Yamada, S.; Makishima, K.; Uehara, Y.; Nakazawa, K.; Takahashi, H.; Dotani, T.; Ueda, Y.; Ebisawa, K.; Kubota, A.; Gandhi, P.
    • Journal Title

      The Astrophysical Journal Letters, Volume 707 2

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] X-Ray Spectral Variability of the Seyfert Galaxy NGC 4051 Observed with Suzaku2009

    • Author(s)
      Terashima, Yuichi; Gallo, Luigi C.; Inoue, Hirohiko; Markowitz, Alex G.; Reeves, James N.; Anabuki, Naohisa; Fabian, Andrew C.; Griffiths, Richard E.; Hayashida, Kiyoshi; Itoh, Takeshi; Kokubun, Norihide; Kubota, Aya; Miniutti, Giovanni; Takahashi, Tadayuki; Yamauchi, Makoto; Yonetoku, Daisuke
    • Journal Title

      Publications of the Astronomical Society of Japan Vol.61,No.SP1

    • NAID

      10025603265

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Spectral Transitions of an Ultraluminous X-Ray Source, NGC 2403 Source 32009

    • Author(s)
      Isobe, Naoki; Makishima, Kazuo; Takahashi, Hiromitsu; Mizuno, Tsunefumi; Miyawaki, Ryouhei; Gandhi, Poshak; Kawaharada, Madoka; Senda, Atsushi; Yoshida, Tessei; Kubota, Aya; Kobori, Hiroshi
    • Journal Title

      Publicatio/s of the Astronomical Society of Japan Vol.61,No.SP1

    • NAID

      10025603175

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Observations of M 82 X-1: Detection of a Curved Hard X-Ray Spectrum2009

    • Author(s)
      Miyawaki, Ryohei; Makishima, Kazuo; Yamada, Shin'ya; Gandhi, Poshak; Mizuno, Tsunefumi; Kubota, Aya; Tsuru, Takeshi G.; Matsumoto, Hironori
    • Journal Title

      Publications of the Astronomical Society of Japan Vol.61,No.SP1

    • NAID

      10025603080

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Is the Black Hole in GX 339-4 Really Spinning Rapidly?2009

    • Author(s)
      Yamada, S、Makishima, K., Uehara, Y., Nakazawa, K., Takahashi, H., Dotani, T., Ueda, Y., Ebisawa, K., Kubota, A., Gandhi, P.
    • Journal Title

      The Astrophysical Journal Letters 707

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Observations of M 82 X-1 : Detection of a Curved Hard X-Ray Spectrum2009

    • Author(s)
      Miyawaki, Makishima, Yamada, Gandhi, Mizuno, Kubota, et.al.
    • Journal Title

      Publications of the Astronomical Society of Japan 61

      Pages: 263-278

    • NAID

      10025603080

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spectral Transitions of an Ultraluminous X-Ray Source, NGC 2403 Source 32009

    • Author(s)
      Isobe, et.al.
    • Journal Title

      Publications of the Astronomical Society of Japan 61

      Pages: 279-289

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X-Ray Spectral Variability of the Seyfert Galaxy NGC 4051 Observed with Suzaku2009

    • Author(s)
      Terashima, et.al.
    • Journal Title

      Publications of the Astronomical Society of Japan 61

      Pages: 299-316

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The CALET mission on the ISS2008

    • Author(s)
      Torii S., (32名), Kubota, A, (他46名)
    • Journal Title

      Proceedings of the SPIE 7021

    • Related Report
      2009 Final Research Report
  • [Journal Article] Suzaku Results on Cygnus X-1 in the Low/Hard State2008

    • Author(s)
      Makishima, Kazuo; Takahashi, Hiromitsu; Yamada, Shin'ya; Done, Chris; Kubota, Aya; Dotani, Tadayasu; Ebisawa, Ken; Itoh, Takeshi; Kitamoto, Shunji; Negoro, Hitoshi; Ueda, Yoshihiro; Yamaoka, Kazutaka;
    • Journal Title

      Publications of the Astronomical Society of Japan Vol.60,No.3

      Pages: 585-604

    • NAID

      10023953265

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Discovery of a Bright Transient Ultraluminous X-Ray Source, Suzaku J1305-4931 in NGC49452008

    • Author(s)
      Isobe, Naoki; Kubota, Aya; Makishima, Kazuo; Gandhi, Poshak; Griffiths, Richard E.; Dewangan, Gulab C.; Itoh, Takeshi; Mizuno, Tsunefumi
    • Journal Title

      Publications of the Astronomical Society of Japan Vol.60,No.SP1

    • NAID

      10023956469

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Results on Cygnus X-1 in the Low/Hard State2008

    • Author(s)
      Makishima, Takahashi, Yamada, Done, Kubota, et.al.
    • Journal Title

      Publications of the Astronomical Society of Japan 60

      Pages: 585-604

    • NAID

      10023953265

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The CALET mission on the ISS2008

    • Author(s)
      Torii, et.al.
    • Journal Title

      SPIE 7021

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Discovery of aBright Transient Ultraluminous X-Ray Source, Suzaku J1305-4931 in NGC49452008

    • Author(s)
      Isobe, N.・Kubota, A.・Makishima, K., et. al.
    • Journal Title

      Publ. Astron. Soc. Japan 60

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low/Hard State Spectra of GRO J1655-40 Observed with Suzaku2008

    • Author(s)
      Takahashi, H.・Fukazawa, Y.・Mizuno, T.・Hirasawa, A.・Kitamoto, S.・Sudoh, K.・Ogita, T.・Kubota, A.・Makishima, K., et. al.
    • Journal Title

      Publ. Astron. Soc. Japan 60

    • NAID

      10023955702

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modelling the behaviour of accretion flows in X-ray binaries. Everything you always wanted to know about accretion but were afraid to ask2007

    • Author(s)
      Done Chris, Gierlinski Marek, Kubota, Aya
    • Journal Title

      The Astronomy and Astrophysics Review 15

      Pages: 1-66

    • Related Report
      2009 Final Research Report
  • [Journal Article] Modelling the behaviour of accretion flows in X-ray binaries. Everything you always wanted to know about accretion but were afraid to ask2007

    • Author(s)
      Done, C.・Gierlinski, M.・Kubota, A
    • Journal Title

      The Astronomy and Astrophysics Review 15

      Pages: 1-66

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku observation of the black hole transient 4U1630-472: discovery of absorption lines2007

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

      Proceedings of IAU Symposium #238, Cambridge, UK: Cambridge University Press,

      Pages: 23-28

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Low/Hard State Spectra of GRO J1655-40 Observed with Suzaku

    • Author(s)
      Takahashi, Hiromitsu; Fukazawa, Yasushi; Mizuno, Tsunefumi; Hirasawa, Ayumi; Kitamoto, Shunji; Sudoh, Keisuke; Ogita, Takayuki; Kubota, Aya; Makishima, Kazuo; Itoh, Takeshi; Parmar, Arvind N.; Ebisawa, Ken; Naik, Sachindra; Dotani, Tadayasu; Kokubun, Motohide; Ohnuki, Kousuke; Takahashi, Tadayuki; Yaqoob, Tahir; Angelini, Lorella; Ueda, Yoshihiro; Yamaoka, Kazutaka; Kotani, Taro; Kawai, Nobuyuki; Namiki, Masaaki; Kohmura, Takayoshi; Negoro, Hitoshi
    • Journal Title

      Publications of the Astronomical Society of Japan Vol.60,No.SP1

    • NAID

      10023955702

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Presentation] 「すざく」によるLMC X-3の観測とブラックホール降着円盤モデルの検証2009

    • Author(s)
      ○久保田あや、吉田健二、Chris Done、堂谷忠靖、上田佳宏、水野恒史、大須賀健
    • Organizer
      日本天文学会
    • Place of Presentation
      山口大学
    • Year and Date
      2009-09-11
    • Related Report
      2009 Annual Research Report
  • [Presentation] 「すざく」によるLMC X-3の観測とブラックホール降着円盤モデルの検証2009

    • Author(s)
      久保田あや、吉田健二、Chris Done、堂谷忠靖、上田佳宏、水野恒史、大須賀健
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      山口大学
    • Related Report
      2009 Final Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi