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Revealing hot gas outflows from the Galactic Center

Research Project

Project/Area Number 16K17674
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Astronomy
Research InstitutionInstitute of Physical and Chemical Research (2017-2018)
Japan Aerospace EXploration Agency (2016)

Principal Investigator

Nakashima Shinya  国立研究開発法人理化学研究所, 開拓研究本部, 基礎科学特別研究員 (20737449)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords天の川銀河中心 / X線 / すざく衛星 / ひとみ衛星 / 天の川銀河 / 高温プラズマ / X線天文学 / X線天文学
Outline of Final Research Achievements

Purpose of this research is to reveal nature and origin of hot gas outflows from the Galactic Center. We discovered that hot gas created by supernovae is blowing out from the Galactic Center along a strong magnetic field. We also revealed spatial distribution of the Galactic hot gaseous halo, which becomes background emission in analyses of high Galactic latitude regions. In addition, we performed the calibration of the Hitomi data. Even though no significant results were derived from the limited Hitomi data, the XRISM satellite (successor of Hitomi) will likely provides unique results.

Academic Significance and Societal Importance of the Research Achievements

天の川銀河は比較的静穏であるが、星生成活動に伴って高温ガスが吹き出していることを示した。このような高温ガスの吹き出しによって、銀河内の物質循環が促進されていると考えられる。また銀河中心領域では磁場が重要な役割を果たすこともわかった。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] NASA Goddard Space Flight Center/University of Massachusetts(米国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] X-Ray Observation of a Magnetized Hot Gas Outflow in the Galactic Center Region2019

    • Author(s)
      Nakashima Shinya、Koyama Katsuji、Wang Q. Daniel、Enokiya Rei
    • Journal Title

      The Astrophysical Journal

      Volume: 875 Issue: 1 Pages: 32-32

    • DOI

      10.3847/1538-4357/ab0d82

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spatial Distribution of the Milky Way Hot Gaseous Halo Constrained by Suzaku X-Ray Observations2018

    • Author(s)
      Nakashima Shinya、Inoue Yoshiyuki、Yamasaki Noriko、Sofue Yoshiaki、Kataoka Jun、Sakai Kazuhiro
    • Journal Title

      The Astrophysical Journal

      Volume: 862 Issue: 1 Pages: 34-34

    • DOI

      10.3847/1538-4357/aacceb

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] X 線天文衛星すざくによる銀河系高温ガスハローの空間分布測定 22018

    • Author(s)
      中島真也
    • Organizer
      日本天文学会2018年春季年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Hitomi observation of the Perseus cluster2017

    • Author(s)
      中島真也
    • Organizer
      The 12th IACHEC meeting
    • Place of Presentation
      California, USA
    • Year and Date
      2017-03-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] X線天文衛星「ひと み」によるペルセウス座銀河団の温度構造解析2017

    • Author(s)
      中島真也
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] X線天文衛星「ひと み」によるペルセウス座銀河団の温度構造解析2017

    • Author(s)
      中島真也
    • 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] X 線天文衛星すざくによる銀河系高温ガスハローの空間分布測定2016

    • Author(s)
      中島真也
    • Organizer
      日本天文学会2016年秋季年会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2016-09-14
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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