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タイトル: Suzaku Discovery of Twin Thermal Plasma from the Tornado Nebula
著者: Sawada, M.
Go Tsuru, T.
Koyama, K.
Oka, T.
著者名の別形: 鶴, 剛
キーワード: ISM: individual (G357.7-0.1)
ISM: jets and outflows
X-rays: ISM
発行日: 25-Nov-2011
出版者: Oxford University Press
誌名: Publications of the Astronomical Society of Japan
巻: 63
号: sp3
開始ページ: S849
終了ページ: S855
抄録: The Tornado nebula (G357.7 − 0.1) is a mysterious radio source with a bright “head” and faint “tail” located in the direction of the Galactic center (GC) region. We here report on the discovery of two diffuse X-ray sources at the head and tail of Tornado with the Suzaku satellite. We found emission lines from highly ionized atoms in the two sources. The spectra have been reproduced by an optically thin thermal plasma with a common temperature of 0.6–0.7 keV. The interstellar absorption ( NH ) of these sources are the same, and are slightly larger than that of the GC distance. Since the estimated distance using the NH value is consistent with radio observations of Tornado, these X-ray sources are likely to be associated with the Tornado nebula. The twin-plasma morphology at both ends of Tornado suggests that the system is a bipolar/outflow source.
著作権等: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Publications of the Astronomical Society of Japan following peer review. The version of record 'Makoto Sawada, Takeshi Go Tsuru, Katsuji Koyama, and Tomoharu Oka. Suzaku Discovery of Twin Thermal Plasma from the Tornado Nebula. Publ Astron Soc Jpn (2011) 63 (sp3), S849-S855' is available online at: http://dx.doi.org/10.1093/pasj/63.sp3.S849
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/197191
DOI(出版社版): 10.1093/pasj/63.sp3.S849
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