Spectral Study of the Galactic Diffuse X-Ray Emission

• Project/Area Number: 21540234
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Nara Women's University
• Principal Investigator: YAMAUCHI Shigeo 奈良女子大学, 理学部, 教授 (60260410)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
• Keywords: X線 / X線スペクトル / 銀河面X線放射

Research Abstract

Using the Suzaku data observed in the Galactic center, Galactic plane, and Galactic bulge regions, I studied properties of Fe-K emission lines of the Galactic diffuse X-ray emission. The ratios of 6. 97keV/6. 7 keV in the Galactic center and the Galactic bulge regions are systematically larger than that of the Galactic plane. The observed Fe emission line cannot be reproduced by a spectral model for active star binaries and white dwarf binaries. We also studied newly discovered X-ray sources and supernova remnants.

Research Products

• [Journal Article] A New Candidate of an X-Ray Luminous Cluster of Galaxies Behind the Galactic Plane (2011)
  • Author(s): Yamauchi, S., Bamba, A., Koyama, K.
  • Journal Title: Publ. Astron. Soc. Japan Volume: 63 Pages: 957-961
  • NAID: 10030719265
  • Peer Reviewed
• [Journal Article] A New Candidate of an X-Ray Luminous Cluster of Galaxies behind the Galactic Plane (2011)
  • Author(s): Yamauchi, S., Bamba, A., Koyama, K.
  • Journal Title: Publications of Astronomical Society of Japan Volume: 63
  • NAID: 10030719265
  • Peer Reviewed
• [Journal Article] Suzaku Observations of the Anomalous X-Ray Pulsar 1E 1841-045 (2010)
  • Author(s): Morii, M., Kitamoto, S., Shibazaki, N., Kawai, N., Arimoto, M., Ueno, M., Kohmura, T., Terada, Y., Yamauchi, S., Takahashi, H.
  • Journal Title: Publ. Astron. Soc. Japan Volume: 62 Pages: 1249-1259
  • NAID: 10027724045
  • Peer Reviewed
• [Journal Article] A New Candidate of a Cluster of Galaxies, 2XMM J045637. 2+522411 (2010)
  • Author(s): Yamauchi, S., Ueno, M., Bamba, A., Koyama, K.
  • Journal Title: Publ. Astron. Soc. Volume: 62 Pages: 219-224
  • Peer Reviewed
• [Journal Article] A New Candidate of a Cluster of Galaxies, 2XMM J045637.2+522411 (2010)
  • Author(s): Yamauchi, S., et al.
  • Journal Title: Publications of Astronomical Society of Japan Volume: 62 Pages: 219-224
  • NAID: 10026714405
  • Peer Reviewed
• [Journal Article] Suzaku Observation of the Anomalous X-Ray Pulsar 1E 1841-045 (2010)
  • Author(s): Morii, M., et al.
  • Journal Title: Publications of Astronomical Society of Japan Volume: 62 Pages: 1249-1259
  • Peer Reviewed
• [Presentation] すざく衛星による超新星残骸G355. 6-0. 0の高温プラズマの観測 (2012)
  • Author(s): 南沙里、太田直美、山内茂雄、小山勝二
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 京都市・龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] すざく衛星による超新星残骸G355.6-0.0の高温プラズマの観測 (2012)
  • Author(s): 南沙里、太田直美、山内茂雄、小山勝二
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] Galactic diffuse X-ray emissionの鉄輝線について (2012)
  • Author(s): 山内茂雄
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 京都市・龍谷大学
• [Presentation] Galactic diffuse X-ray emissionの鉄輝線について (2012)
  • Author(s): 山内茂雄
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
• [Presentation] すざく衛星による天の川銀河の背後に潜む銀河団の発見 (2011)
  • Author(s): 山内茂雄、馬場彩、小山勝二
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-19
• [Presentation] すざく衛星による天の川銀河の背後に潜む銀河団の発見 (2011)
  • Author(s): 山内茂雄, 馬場彩, 小山勝二
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島市・鹿児島大学
• [Presentation] XMM-Newton衛星とすざく衛星による銀河団候補天体の発見 (2010)
  • Author(s): 山内茂雄、植野優、馬場彩、小山勝二
  • Organizer: 日本天文学会 2010年春季年会
  • Place of Presentation: 広島大学
  • Year and Date: 2010-03-25
• [Presentation] XMM-Newton衛星とすざく衛星による銀河団候補天体の発見 (2010)
  • Author(s): 山内茂雄, 植野優, 馬場彩, 小山勝二
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 東広島市・広島大学
• [Presentation] すざく衛星による超新星残骸G12. 0-0. 1の観測 (2009)
  • Author(s): 山内茂雄
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 山口市・山口大学
• [Presentation] すざく衛星による超新星残骸G12.0-0.1の観測 (2009)
  • Author(s): 山内茂雄
  • Organizer: 日本天文学会 2009年秋季年会
  • Place of Presentation: 山口大学