Broad-Band X-Ray Observations of the Galactic Diffuse X-Ray Emission

• Project/Area Number: 18540228
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Iwate University
• Principal Investigator: YAMAUCHI Shigeo Iwate University, 人文社会科学部, 准教授 (60260410)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥1,800,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2007: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
• Keywords: X線 / X線スペクトル / 銀河面X線放射

Research Abstract

X線天文衛星により取得した観測データの解析により、銀河面X線放射に電離の進んでいない鉄からの輝線を発見し、数千万度の温度の希薄な高温プラズマガスからの放射に加えて非熱的放射が存在することを明らかにした。鉄輝線を中心に、X線スペクトルの特徴より起源について考察を行った。また、銀河中心、銀河円盤領域の観測中に見つかったトランジェント天体、銀河面X線放射との関連が深いと考えられる超新星残骸の解析も行い、これらの特徴、性質を明らかにした。

Research Products

• [Journal Article] A New Supernova Remnant Candidate and an Associated Outflow in the Sagittarius C Region (2009)
  • Author(s): Tsuru, T., G., Nobukawa, M., Nakajima, H., Matsumoto, H., Koyama, K., Yamauchi, S.,
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • NAID: 10025602905
  • Peer Reviewed
• [Journal Article] Iron Emissio Lines on the Galactic Ridge Observed with Suzaku (2009)
  • Author(s): Yamauchi, S., Ebisawa, K., Tanaka, Y., Koyama, K., Matsumoto, H., Yamasaki, N. Y., Takahashi, H., Ezoe, Y.
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • Peer Reviewed
• [Journal Article] X-Ray Reflection Nebula with Large Equivalent Widths of the Neutral Iron Kα Line in the Sagittarius C Region (2009)
  • Author(s): Nakajima, H., Tsuru, T., G., Nobukawa, M., Matsumoto, H., Koyama, K., Murakami, H., Senda, A., Yamauchi, S.
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • NAID: 10025602984
  • Peer Reviewed
• [Journal Article] Doppler-Broadened Iron X-Ray Lines from Tycho's Supernova Remnant (2009)
  • Author(s): Furuzawa, A., Ueno, D., Hayato, A., Ozawa, M., Tamagawa, T., Bamba, A., Hughes, J.P., Kunieda, H., Makishima, K., Holt, S.S., Hwang, U., Kinugasa, K., Petre, R., Tamura, K., Tsunemi, H., Yamauchi, S.
  • Journal Title: Astrophysical Journal 693
  • Peer Reviewed
• [Journal Article] A New Supernova Remnant Candidate and an Associated Outflow in the Sagittarius C Region (2009)
  • Author(s): Tsuru, T. G., et.al.
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • Peer Reviewed
• [Journal Article] Iron Emission Lines on the Galactic,Ridge Observed with Suzaku (2009)
  • Author(s): Yamauchi, S., et.al.
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • NAID: 10025602933
  • Peer Reviewed
• [Journal Article] X-Ray Reflection Nebulae with Large Equivalent Widths of the Neutral Iron Ka Line in the Sagittarius C Region (2009)
  • Author(s): Nakajiml, H., et.al.
  • Journal Title: Publications of the Astronomical Society of Japan 61
  • Peer Reviewed
• [Journal Article] Doppler-Broadened Iron X-Ray Lines from Tycho' s Supernova Remnant (2009)
  • Author(s): Furuzawa, A., et.al.
  • Journal Title: Astrophysical Journal 693
  • Peer Reviewed
• [Journal Article] Suzaku Detection of an Intense X-Ray Flare from an A-Type Star, HD161084 (2008)
  • Author(s): Miura, J., Tsujimoto, M., Tsuboi, Y., Maeda, Y., Sugawara, Y., Koyama, K., Yamauchi, S.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • NAID: 10023955601
  • Peer Reviewed
• [Journal Article] Suzaku Spectroscopy of an X-Ray Reflection Nebula and a New Supernova Remnant Candidate in the Sgr B1 region (2008)
  • Author(s): Nobukawa, M., Tsuru, T. G., Takikawa, Y., Hyodo, Y., Inui, T., Nakajima, H., Matsumoto, H., Koyama, K., Murakami, H., Yamauchi, S.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • NAID: 10023956275
  • Peer Reviewed
• [Journal Article] Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center (2008)
  • Author(s): Yuasa, T., Tamura, K., Nakazawa, K., Kokubun, M., Makishima, K., Bamba, A., Maeda, Y., Takahashi, T., Ebisawa, K., Senda, A., Hyodo, Y., Tsuru, T. G., Koyama, K., Yamauchi, S., Takahashi, H.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • NAID: 10023956331
  • Peer Reviewed
• [Journal Article] Spectral Study of the Galactic Ridge X-Ray Emission with Suzaku (2008)
  • Author(s): Ebisawa, K., Yamauchi, S., Tanaka, Y., Koyama, K., Ezoe, Y., Bamba, A., Kokubun, M., Hyodo, Y., Tsujimoto, M., Takahashi, H.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • NAID: 10023956382
  • Peer Reviewed
• [Journal Article] X-Ray Emission from Supernova Remnants Observed in the ASCA Galactic Plane Survey (2008)
  • Author(s): Yamauchi, S., Ueno, M., Koyama, K., Bamba, A.
  • Journal Title: Publications of the Astronomical Society of Japan 60 Pages: 1143-1150
  • NAID: 10023955166
  • Peer Reviewed
• [Journal Article] X-Ray Emission from Supernova Remnants Observed in the ASCA Galactic Plane Survey (2008)
  • Author(s): Yamauchi, S., et.al.
  • Journal Title: Publications of the Astronomical Society of Japan 60 Pages: 1143-1150
  • NAID: 10023955166
  • Peer Reviewed
• [Journal Article] Suzaku Detection of an Intense X-Ray Flare from an A-Type Star, HD161084 (2008)
  • Author(s): Miura, J., et. al.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Suzaku Spectroscopy of an X-Ray Reflection Nebula and a New Supernova Remnant Candidate in the Sgr B1 region (2008)
  • Author(s): Nobukawa, M., et. al.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center (2008)
  • Author(s): Yuasa, T., et. al.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Spectral Study of the Galactic Ridge X-Ray Emission with Suzaku (2008)
  • Author(s): Ebisawa, K., et. al.
  • Journal Title: Publications of the Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Suzaku Observations of HESS J1616-508 : Evidence for a Dark Particle Accelerator (2007)
  • Author(s): Matsumoto, H., Ueno, M., Bamba, A., Hyodo, Y., Mori, H., Uchiyama, H., Tsuru, T. G., Koyama, K., Kataoka, J., Katagiri, H., Takahashi, T., Hiraga, J., Yamauchi, S., Hughes, J. P., Senda, A., Kokubun, M., Kohmura, T. Poter, F. S.
  • Journal Title: Publications of the Astronomical Society of Japan 59
  • NAID: 10023948831
  • Peer Reviewed
• [Journal Article] Discovery of a Possible X-Ray Counterpart to HESS J1804-216 (2007)
  • Author(s): Bamba, A., Koyama, K., Hiraga, J. S., Hughes, J. P., Kohmura, T., Kokubun, M., Maeda, Y., Matsumoto, H., Senda, A., Takahashi, T., Tsuboi, Y., Yamauchi, S., Yuasa, T.
  • Journal Title: Publications of the Astronomical Society of Japan 59
  • NAID: 10023948887
  • Peer Reviewed
• [Journal Article] Discovery of a New X-Ray Transient Source in the Scutum Region with Suzaku (2007)
  • Author(s): Yamauchi, S., Ebisawa, K., Bamba, A., Ishida, M., Iwasawa, K., Tanaka, Y., Kokubun, M., Koyama, K., Takahashi, H., Tsuboi, Y.
  • Journal Title: Publications of the Astronomical Society of Japan 59
  • NAID: 10023948944
  • Peer Reviewed
• [Journal Article] Discoveries of Diffuse Iron Line Sources from the Sgr B Region (2007)
  • Author(s): Koyama, K., Inui, T., Hyodo, Y., Matsumoto,H., Tsuru, T. G., Maeda, Y., Murakami, H., Yamauchi, S., Kissel, S. E., Chan, K. W., Soong, Y.
  • Journal Title: Publications of the Astronomical Society of Japan 59
  • NAID: 10023948977
  • Peer Reviewed
• [Journal Article] Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission (2007)
  • Author(s): Koyama, K., Hyodo, Y., Inui, T., Nakajima, H., Matsumoto, H., Tsuru, T. G., Takahashi, T., Maeda, Y., Yamasaki, N. Y., Murakami, H., Yamauchi, S., Tsuboi, Y., Senda, A., Kataoka, J., Takahasi, H., Holt, S. S.,Brown, G. V.
  • Journal Title: Publications of the Astronomical Society of Japan 59
  • NAID: 10023949080
  • Peer Reviewed
• [Journal Article] A Bright Transient X-Ray Source Near the Galactic Center Found in Archival Ginga Data from 1987 (2007)
  • Author(s): Yamauchi, S., Nakagawa, Y., Sudoh, K., Kitamoto, S.
  • Journal Title: Publications of the Astronomical Society of Japan 59 Pages: 1141-1151
  • NAID: 10023948050
  • Peer Reviewed
• [Journal Article] A Bright Transient X-Ray Source Near the Galactic Center Found in Archival Ginga Data from 1987 (2007)
  • Author(s): Yamauchi, S., et. al.
  • Journal Title: Publications of the Astronomical Society of Japan 59 Pages: 1141-1151
  • NAID: 10023948050
  • Peer Reviewed
• [Journal Article] Suzaku Observations of HESS J1616-508 : Evidence for a Dark Particle Accelerator (2007)
  • Author(s): Matsumoto, H., et al.
  • Journal Title: Publications of the Astronomical Society of Japan 59
• [Journal Article] Discovery of a Possible X-Ray Counterpart to HESS J1804-216 (2007)
  • Author(s): Bamba, A., et al.
  • Journal Title: Publications of the Astronomical Society of Japan 59
• [Journal Article] Discovery of a New X-Ray Transient Source in the Scutum Region, with Suzaku (2007)
  • Author(s): Yamauchi, S., et al.
  • Journal Title: Publications of the Astronomical Society of Japan 59
  • NAID: 10023948944
• [Journal Article] Discoveries of Diffuse Iron Line Sources from the Sgr B Region (2007)
  • Author(s): Koyama, K., et al.
  • Journal Title: Publications of the Astronomical Society of Japan 59
• [Journal Article] Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission (2007)
  • Author(s): Koyama, K., et al.
  • Journal Title: Publications of the Astronomical Society of Japan 59
• [Presentation] すざく衛星による超新星残骸G344.7-0.1の観測(II) (2008)
  • Author(s): 山内茂雄
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 岡山市・岡山理科大学
• [Presentation] すざく衛星による超新星残骸G344.7-0.1の観測 (2008)
  • Author(s): 山内茂雄、植野優
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 東京都渋谷区・国立オリンピック記念青少年総合センター
• [Presentation] すざく衛星による超新星残骸G344.7-0.1の観測(II) (2008)
  • Author(s): 山内茂雄
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 岡山市、岡山理科大学
• [Presentation] すざく衛星による超新星残骸G344.7-0.1の観測 (2008)
  • Author(s): 山内茂雄、植野優
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 東京都渋谷区、国立オリンピック記念青少年総合センター
• [Presentation] すざくチーム、すざく衛星による銀河面X線放射の観測 (2007)
  • Author(s): 山内茂雄、海老沢研、田中靖郎、小山勝二
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 平塚市・東海大学
• [Presentation] 「ぎんが」衛星データアーカイブスによる銀河中心方向に位置するトランジェント天体の発見 (2007)
  • Author(s): 山内茂雄、中川善雄、須藤敬輔、北本俊二
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 岐阜市・岐阜大学
• [Presentation] 「ぎんが」衛星データアーカイブスによる銀河中心方向に位置するトランジェント天体の発見 (2007)
  • Author(s): 山内茂雄、中川善雄、須藤敬輔、北本俊二
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 岐阜市、岐阜大学
• [Presentation] すざくチーム、すざく衛星による銀河面領域観測時に発見されたトランジェント天体 (2006)
  • Author(s): 山内茂雄、海老沢研、馬場彩、岩澤一司、田中靖郎、石田学、国分紀秀、小山勝二、高橋弘充、坪井陽子
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 北九州市・九州国際大学