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硬X線撮像分光による銀河系中心の研究

Research Project

Project/Area Number 17740126
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Astronomy
Research InstitutionJapan Aerospace Exploration Agency

Principal Investigator

前田 良知  Japan Aerospace Exploration Agency, 宇宙科学研究本部, 助教 (80342624)

Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2007: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsX線天文学
Research Abstract

昨年度に引き続き,2005年7月に打ち上げられたX線天文衛星すざくのScience Working Group(SWG)の観測時間枠などを用い,銀河系中心の観測を行った。主に軟X線撮像分光装置のX-ray Imaging Spectrometer(XIS)と硬X線検出器(HXD)を用い,SWG teamで共同して解析を進めた。いままでの衛星では検出できなかったHD161084という天体から初めてX線フレアを検出した。X線スペクトルの吸収が少ないことから,距離500pc程度に存在する銀河中心の手前に位置するA型星で,通常フレア活動が弱いクラスの星であった。フレアを起こすことから,連星系起源が考えられる。しかしながら,フレアの規模はその前後の100倍の明るさになっており,極めて特殊な系である可能性を示唆した。(Miura, et. Al.2008)
昨年度に引き続き,銀河中心の複雑な空間構造を持つ領域の解析を可能にするため,すざくのX-Ray Telescope(XRT)の性能評価とその応答関数作成に取り組んだ。1分角程度の誤差を持つ指向精度について調査を行い,軌道上での衛星への太陽熱入力の変化によりSTTを支持する衛星構体が歪むことが原因であることがわかった。衛星の温度HK情報,太陽光の照射,指向方向の緯度のパラメーターを組み合わせ,20秒角程度まで押さえ込むことに成功した。(Uchiyama, et. al.2008)

Report

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

    (20 results)

All 2008 2007 2006 2005

All Journal Article (20 results) (of which Peer Reviewed: 6 results)

  • [Journal Article] Detection of a Rare Supersoft Outburst Event during a Suzaku Observation of 1EO102.2-72192008

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

      Publications of the Astronomical Society of Japan 60

      Pages: 231-240

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center2008

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

      Publications of the Astronomical Society of Japan 60

      Pages: 207-220

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center2008

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

      Publications of the Astronomical Society of Japan 60

      Pages: 85-94

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Suzaku Detection of an Intense X-Ray Flare from an A-Type Star, HD1610842008

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

      Publications of the Astronomical Society of Japan 60

      Pages: 49-56

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Restoring the Suzaku Source Position Accuracy and Point-Spread Function2008

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

      Publications of the Astrononical Society of Japan 60

      Pages: 35-42

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Extremely fast acceleration of cosmic rays in a supernova remnant2007

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

      Nature 60

      Pages: 576-578

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Discoveries of Diffuse Iron Line Sources from the Sgr B Region2007

    • Author(s)
      Koyama et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59・SPI

      Pages: 221-227

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission2007

    • Author(s)
      Koyama et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 245-255

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Monte Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis2007

    • Author(s)
      Ishisaki et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 113-132

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Discovery of a Possible X-Ray Counterpart to HESS J1804-2162007

    • Author(s)
      Bamba et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 209-214

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Swift and Suzaku Observations of the X-Ray Afterglow from the GRB 0601052007

    • Author(s)
      Tashiro et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 361-367

    • Related Report
      2006 Annual Research Report
  • [Journal Article] The X-Ray Telescope onboard Suzaku2007

    • Author(s)
      Serlemitsos et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 9-21

    • Related Report
      2006 Annual Research Report
  • [Journal Article] X-Ray Imaging Spectrometer (XIS) on Board Suzaku2007

    • Author(s)
      Koyama et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 23-33

    • Related Report
      2006 Annual Research Report
  • [Journal Article] X-Ray Spectrum of Sagittarius A East2007

    • Author(s)
      Koyama et al.
    • Journal Title

      Publications of the Astronomical Society of Japan 59 SPI

      Pages: 237-243

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Discovery of Carbon Rich X-ray Emission from a Wolf-Rayet Binary θ Muscae2006

    • Author(s)
      Sugawara et al.
    • Journal Title

      Proceedings of the conference held 29 August -2 September, 2005 at Hokkai-Gakuen University, Sapporo, Japan.

      Pages: 500-500

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A Candidate Neutron Star within the Radio Shell of Sgr A East2006

    • Author(s)
      ParK et al.
    • Journal Title

      Journal of Physics : Conference Series 54・1

      Pages: 126-132

    • Related Report
      2006 Annual Research Report
  • [Journal Article] X-ray polarimeter with a multilayer-coated CCD2006

    • Author(s)
      Kitamoto et al.
    • Journal Title

      Proceedings of the SPIE 6266

      Pages: 615-626

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Chandra Deep X-Ray Observation of a Typical Galactic Plane Region and Near-Infrared Identification2005

    • Author(s)
      Ebisawa et al.
    • Journal Title

      The Astrophysical Journal 635,1

      Pages: 214-242

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A Candidate Neutron Star Associated with Galactic Center Supernova Remnant Sagittarius A East2005

    • Author(s)
      Park et al.
    • Journal Title

      The Astrophysical Journal 631,2

      Pages: 964-975

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A Search for the X-Rays from the Long-Duration Microlensing Event MACHO-96-BLG-52005

    • Author(s)
      Maeda et al.
    • Journal Title

      The Astrophysical Journal Letter 631,1

      Pages: 65-68

    • Related Report
      2005 Annual Research Report

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

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