Study for the Galactic Center Activity and Origin of the Highest Energy Cosmic Rays

2008 Fiscal Year Final Research Report

• Project/Area Number: 18204015
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Kyoto University
• Principal Investigator: KOYAMA Katsuji Kyoto University, 大学院・理学研究科, 教授 (10092206)
• Co-Investigator(Kenkyū-buntansha): TSURU Takeshi 京都大学, 大学院・理学研究科, 准教授 (10243007) ; MATSUMOTO Hironori 京都大学, 大学院・理学研究科, 助教 (90311365)
• Project Period (FY): 2006 – 2008
• Keywords: X線γ線天文学

Research Abstract

銀河中心領域からのFeI, FeXXV, Fe XXVI のKα線を分離し、その空間分布を正確にもとめた。その結果、銀河中心は7000 万度のプラザがほぼ1×2度の範囲を満たしていること、またFeI のKα線は銀河中心にある巨大ブラックホールが約300年前に強いX線を放射し、それが蛍光、反射した結果(X線反射星雲)であることを確認した。このようなX線反射星雲の候補をいくつも発見した。SCI 時のCTE 補正法、および、その補正パラメータの決定法を開発した。こうして全ての「すざく」XIS の観測はSCI を使うに至った。

Research Products

• [Journal Article] X-ray emission from the Sagittarius D region (2009)
  • Author(s): Nobukawa Masayoshi, Sawada Makoto, Matsumoto Hironori, Tsuru Takeshi Go, Koyama Katsuji
  • Journal Title: AdSpR 43 Pages: 1045-1048
  • Peer Reviewed
• [Journal Article] Spatial Distribution of the Galactic Center Diffuse X-Rays and the Spectra of the Brightest 6.4keV Clumps (2009)
  • Author(s): Koyama, K, Takikawa, Y, Hyodo, Y, Inui, T, Nobukawa, M, Matsumoto, H, Tsuru, T, G.
  • Journal Title: PASJ 61S Pages: 255-262
  • Peer Reviewed
• [Journal Article] Time Variability of the Neutral Iron Lines from the Sagittarius B2 Region and Its Implication of a Past Outburst of Sagittarius A (2009)
  • Author(s): Inui, T, Koyama, K, Matsumoto, H, Tsuru, T, G
  • Journal Title: PASJ 61S Pages: 241-253
  • Peer Reviewed
• [Journal Article] X-Ray Reflection Nebulae 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: PASJ 61S Pages: 233-240
  • Peer Reviewed
• [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: PASJ 61S Pages: 219-223
  • Peer Reviewed
• [Journal Article] X-Ray Observations of the Sagittarius D HII Region toward the Galactic Center with Suzaku (2009)
  • Author(s): Sawada, M, Tsujimoto, M, Koyama, K, Law, C, J, Tsuru, T, G, Hyodo, Y
  • Journal Title: PASJ 61S Pages: 209-218
  • Peer Reviewed
• [Journal Article] New CTI Correction Method for Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer (2009)
  • Author(s): Uchiyama, H, Ozawa, M, Matsumoto, H, Tsuru, T, G, Koyama, K, Kimura, M, Uchida, H, Nakajima, H, Hayashida, K, Tsunemi, H, 11 coauthors
  • Journal Title: PASJ 61S Pages: 9-15
  • Peer Reviewed
• [Journal Article] Energy-Scale Calibration of the Suzaku X-Ray Imaging Spectrometer Using the Checker Flag Charge-Injection Technique in Orbit (2009)
  • Author(s): Ozawa, M, Uchiyama, H, Matsumoto, H, Nakajima, H, Koyama, K, Tsuru, T, G, Uchino, M, Uchida, H, Hayashida, K, Tsunemi, H, 12 coauthors
  • Journal Title: PASJ 61S Pages: 1-7
  • 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, 5 coauthors
  • Journal Title: PASJ 60S Pages: 207-221
  • Peer Reviewed
• [Journal Article] A Time-Variable X-Ray Echo : Indications of a Past Flare of the Galactic-Center Black Hole (2008)
  • Author(s): Koyama, K, Inui, T, Matsumoto, H, Tsuru, T, G
  • Journal Title: PASJ 60S Pages: 201-205
  • Peer Reviewed
• [Journal Article] Suzaku Spectroscopy of an X-Ray Reflection Nebula and a New Supernova Remnant Candidate in the SgrB1 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: PASJ 60S Pages: 191-199
  • Peer Reviewed
• [Journal Article] Suzaku Observation of G359,79-0,26, a New Supernova Remnant Candidate in the Galactic Center (2008)
  • Author(s): Mori, H, Tsuru, T, G, Hyodo, Y, Koyama, K, Senda, A
  • Journal Title: PASJ 60S Pages: 183-190
  • Peer Reviewed
• [Journal Article] Performance of the Charge-Injection Capability of Suzaku XIS (2008)
  • Author(s): Nakajima, H, Yamaguchi, H, Matsumoto, H, Tsuru, T, G, Koyama, K, Tsunemi, H, Hayashida, K, Torii, K, Namiki, M, Katsuda, S, and 10 coauthors
  • Journal Title: PASJ 60S Pages: 1-9
  • Peer Reviewed
• [Journal Article] Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission (2007)
  • Author(s): Koyama, Katsuji, Hyodo, Yoshiaki, Inui, Tatsuya, Nakajima, Hiroshi, Matsumoto, Hironori, Tsuru, Takeshi Go, Takahashi, Tadayuki, Maeda, Yoshitomo, Yamazaki, Noriko Y, Murakami, Hiroshi, 7 coauthors
  • Journal Title: PASJ 59S Pages: 245-255
  • Peer Reviewed
• [Journal Article] X-Ray Spectrum of Sagittarius A East (2007)
  • Author(s): Koyama, Katsuji, Uchiyama, Hideki, Hyodo, Yoshiaki, Matsumoto, Hironori, Tsuru, Takeshi Go, Ozaki, Masanobu, Maeda, Yoshitomo, Murakami, Hiroshi
  • Journal Title: PASJ 59S Pages: 237-243
  • Peer Reviewed
• [Journal Article] Suzaku Spectroscopic Study of Hard X-Ray Emission in the Arches Cluster (2007)
  • Author(s): Tsujimoto, Masahiro, Hyodo, Yoshiaki, Koyama, Katsuji
  • Journal Title: PASJ 59S Pages: 229-235
  • Peer Reviewed
• [Journal Article] Discoveries of Diffuse Iron Line Sources from the Sgr B Region (2007)
  • Author(s): Koyama, Katsuji, Inui, Tatsuya, Hyodo, Yoshiaki, Matsumoto, Hironori, Tsuru, Takeshi Go, Maeda, Yoshitomo, Murakami, Hiroshi, Yamauchi, Shigeo, Kissel, Steven E, Chan, Kai-Wing, Soong, Yang
  • Journal Title: PASJ 59S Pages: 221-227
  • Peer Reviewed
• [Journal Article] X-Ray Imaging Spectrometer (XIS) on Board Suzaku (2007)
  • Author(s): Koyama, Katsuji, Tsunemi, Hiroshi, Dotani, Tadayasu, Bautz, Mark W, Hayashida, Kiyoshi, Tsuru, Takeshi Go, Matsumoto, Hironori, Ogawara, Yoshiaki, Ricker, George R, Doty, John, 36 coauthors
  • Journal Title: PASJ 59S Pages: 23-33
  • Peer Reviewed
• [Journal Article] The X-Ray Observatory Suzaku (2007)
  • Author(s): Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L, Koyama, Katsuji, Kunieda, Hideyo, Makishima, Kazuo, Ogawara, Yoshiaki, Petre, Robert, Takahashi, Tadayuki, and 133 coauthors
  • Journal Title: PASJ 59S Pages: 1-7
• [Presentation] Flight calibration of the Suzaku XIS using the charge injection technique (2008)
  • Author(s): Ozawa, Midori, Uchiyama, Hideki, Nakajima, Hiroshi, Mori, Hideyuki, Matsumoto, Hironori, Tsuru, Takeshi Go, Koyama, Katsuji, Uchino, Masahiro,Hayashida, Kiyoshi, Tsunemi, Hiroshi, 7 coauthors
  • Organizer: SPIE
  • Place of Presentation: (7011E)(65)
  • Year and Date: 20080000
• [Presentation] Suzaku Results of SN 1006 : Chemical Abundances of the ``youngest'' Galactic Type Ia Supernova Remnant (2008)
  • Author(s): Koyama, Katsuji
  • Organizer: AIPC
  • Place of Presentation: (1016)( 361)(Origin of Matter and Evolution of Galaxies - From the Dawn of Universe to the Formation of Solar System)
  • Year and Date: 20080000
• [Presentation] Suzaku Observations of the Galactic Center : The Origin of Highly Ionized Iron Lines (2008)
  • Author(s): Hyodo, Yoshiaki, Koyama, Katsuji
  • Organizer: mgng.conf
  • Place of Presentation: 156
  • Year and Date: 20080000
• [Presentation] X-ray observation of the Sagittarius D HII region toward the Galactic Center with Suzaku (2008)
  • Author(s): Sawada, Makoto, Tsujimoto, Masahiro, Koyama, Katsuji
  • Organizer: cosp
  • Place of Presentation: .37.2755
  • Year and Date: 20080000
• [Presentation] X-ray emission from the Sagittarius D SNR region with Suzaku (2008)
  • Author(s): Nobukawa, Masayoshi, Koyama, Katsuji, Tsuru, Takeshi, Sawada, Makoto
  • Organizer: cosp
  • Place of Presentation: .37.2243
  • Year and Date: 20080000
• [Presentation] Mitigating CCD radiation damage with charge injection : first flight results from Suzaku (2007)
  • Author(s): Bautz, M. W., LaMarr, B. J., Miller, E. D., Kissel, S. E., Prigozhin, G. Y., Burke, B. E., Gregory, J. A., Uchiyama, H., Hyodo, Y., Yamaguchi, H., 13 coauthors
  • Organizer: SPIE
  • Place of Presentation: 6686E(23)
  • Year and Date: 20070000
• [Presentation] The onboard calibration for the spaced-row charge injection of the Suzaku XIS (2007)
  • Author(s): Uchiyama, Hideki, Hyodo, Yoshiaki, Yamaguchi, Hiroya, Nakajima, Hiroshi, Mori, Hideyuki, Tsuru, Takeshi Go, Matsumoto, Hironori, Koyama, Katsuji, Torii, Ken'ichi, Katsuda, Satoru, 10coauthors
  • Organizer: SPIE
  • Place of Presentation: 6686E(22)
  • Year and Date: 20070000
• [Presentation] Ground bakeout experiment of the optical blocking filter (OBF) for the Suzaku XIS (2007)
  • Author(s): Mori, Hideyuki, Tsuru, Takeshi Go, Matsumoto, Hironori, Uchiyama, Hideki, Ozawa, Midori, Takikawa, Yohjiro, Nobukawa, Masayoshi, Koyama, Katsuji, Torii, Ken'ichi, Tawa, Noriaki, 3 coauthors
  • Organizer: SPIE
  • Place of Presentation: 6686E(21)
  • Year and Date: 20070000
• [Presentation] Suzaku Solved a Mystery of the Galactic Center X-rays (2007)
  • Author(s): Koyama, Katsuji
  • Organizer: as the
  • Place of Presentation: 100(438)
  • Year and Date: 20070000
• [Presentation] Tracking Contamination on the Suzaku X-Ray Imaging Spectrometer (2007)
  • Author(s): Miller, Eric D., Bautz, M. W., Hayashida, K., Torii, K., Tsunemi, H., Dotani, T., Tsuru, T., Matsumoto, H., Koyama, K., Suzaku Team
  • Organizer: AAS
  • Place of Presentation: .210.8610
  • Year and Date: 20070000
• [Presentation] Orbital Calibration of the XIS (2007)
  • Author(s): Hayashida, K., Torii, K., Namiki, M., Anabuki, N., Katsuda, S., Tawa, N., Miyauchi, T., Hasuike, K., Nagai, M., Tsunemi, H., 26 coauthors
  • Organizer: PThPS
  • Place of Presentation: 169(316)
  • Year and Date: 20070000
• [Presentation] A Joint Suzaku and Chandra Spectroscopy Study of Hard X-Ray Emission from the Arches Cluster (2007)
  • Author(s): Tsujimoto, M., Hyodo, Y., Koyama, K.
  • Organizer: PThPS
  • Place of Presentation: 169(170)
  • Year and Date: 20070000
• [Presentation] Hard X-Ray Investigation of the Galactic Center Region with Suzaku (2007)
  • Author(s): Kokubun, M., Yuasa, T., Tamura, K., Makishima, K., Takahashi, T., Nakazawa, K., Yamasaki, N. Y., Murakami, H., Maeda, Y., Ebisawa, K., 10 coauthors
  • Organizer: PThPS
  • Place of Presentation: 169(109)
  • Year and Date: 20070000
• [Presentation] X-Ray Observations of the Galactic Center with Suzaku (2007)
  • Author(s): Koyama, K.
  • Organizer: PThPS
  • Place of Presentation: 169(103)
  • Year and Date: 20070000
• [Presentation] Spectroscopic Study of the Galactic Center X-rays with Suzaku (2007)
  • Author(s): K. Koyama
  • Organizer: XMM-Newton : The Next Decade Madrid
  • Place of Presentation: Spain
  • Year and Date: 20070000
• [Presentation] Spatial Distribution of the Galactic Diffuse X-Rays and the Spectral/Timing Study of the 6.4-keV Clumps (2006)
  • Author(s): K. Koyama
  • Organizer: The Suzaku X-ray Universe
  • Place of Presentation: San Diego, USA
  • Year and Date: 20060000
• [Presentation] The background properties of Suzaku/XIS (2006)
  • Author(s): Yamaguchi, H., Nakajima, H., Koyama, K., Tsuru, T. G., Matsumoto, H., Tawa, N., Tsunemi, H., Hayashida, K., Torii, K., Namiki, M., 5 coauthors
  • Organizer: SPIE
  • Place of Presentation: 6266E(121)
  • Year and Date: 20060000
• [Presentation] Energy response of the x-ray imaging spectrometer (XIS) on Suzaku (2006)
  • Author(s): Matsumoto, Hironori, Nakajima, Hiroshi, Yamaguchi, Hiroya, Tsuru, Takeshi G., Koyama, Katsuji, Hayashida, Kiyoshi, Torii, Ken'ichi, Namiki, Masaaki, Tsunemi, Hiroshi, Murakami, Hiroshi, 5 coauthors
  • Organizer: SPIE
  • Place of Presentation: 6266E(120)
  • Year and Date: 20060000
• [Presentation] The Ground Calibration of the Back-Side Illuminated CCD camera of X-ray Imaging Spectrometer (XIS) onboard Astro-E2 (Suzaku) (2006)
  • Author(s): Yamaguchi, H., Nakajima, H., Koyama, K., Tsuru, T. G., Matsumoto, H., Tsunemi, H., Hayashida, K., Torii, K., Namiki, M., Katsuda, S., 2 coauthors
  • Organizer: ESASP
  • Place of Presentation: 604(949)
  • Year and Date: 20060000
• [Presentation] X-ray perspective on young stellar populations in objects with nuclear activity - the case of our Galactic Centernear the Galactic Center with Chandra (2006)
  • Author(s): Koyama, Katsuji, Senda, Atsushi, Takagi, Shin-Ichiro
  • Organizer: IAUS
  • Place of Presentation: 230(379)
  • Year and Date: 20060000
• [Presentation] Suzaku observation of Radio Arc region (2006)
  • Author(s): Senda, A., Koyama, K., Murakami, H., Suzaku GC-Team
  • Organizer: cosp
  • Place of Presentation: .36.2811
  • Year and Date: 20060000
• [Presentation] New X-ray views observed with Suzaku (2006)
  • Author(s): Koyama, K.
  • Organizer: Galactic Center Workshop (2006) "From the Center of the Milky Way to Nearby Low-Luminosity Galactic Nuclei"
  • Year and Date: 20060000
• [Presentation] The Galactic Center Observed with Suzaku (2006)
  • Author(s): K. Koyama
  • Organizer: International Symposium on "The Extreme Universe in the Suzaku Era"
  • Year and Date: 20060000
• [Book] 高エネルギー天文学(初版) (2008)
  • Author(s): 高橋忠幸他
  • Publisher: 日本評論社
• [Book] ブラックホールと高エネルギー現象(初版) (2007)
  • Author(s): 嶺重慎
  • Publisher: 日本評論社
• [Book] 天の川の真実(初版) (2006)
  • Author(s): 奥田治之, 祖父江義明
  • Publisher: 誠文堂新光社 初版
• [Book] 量子の世界 (2006)
  • Author(s): 川合光
  • Publisher: 京都大学学術出版会
• [Remarks] 報道関係
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/member/koyama/press.html
• [Remarks] 講演、和文解説書など
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/member/koyama/koen.html