X-Rays from Superbubbles in the Large Magellanic Cloud. VI. A Sample of Thirteen Superbubbles

University of Illinois, Urbana-Champaign, Urbana, Illinois, United States
The Astrophysical Journal Supplement Series (Impact Factor: 11.22). 04/2001; 136(1). DOI: 10.1086/321794
Source: arXiv


We present ROSAT observations and analysis of thirteen superbubbles in the Large Magellanic Cloud. Eleven of these observations have not been previously reported. We have studied the X-ray morphology of the superbubbles, and have extracted and analyzed their X-ray spectra. Diffuse X-ray emission is detected from each of these superbubbles, and X-ray emission is brighter than is theoretically expected for a wind-blown bubble, suggesting that the X-ray emission from the superbubbles has been enhanced by interactions between the superbubble shell and interior SNRs. We have also found significant positive correlations between the X-ray luminosity of a superbubble and its H-alpha luminosity, expansion velocity, and OB star count. Further, we have found that a large fraction of the superbubbles in the sample show evidence of ``breakout'' regions, where hot X-ray emitting gas extends beyond the H-alpha shell. Comment: 25 pages, 8 figures, to be published in Astrophysical Journal Supplement Series

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Available from: Sean D. Points, Aug 10, 2013
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    ABSTRACT: Kyoto University (京都大学) 0048 新制・課程博士 博士(理学) 甲第12812号 理博第3122号 新制/理/1463 UT51-2007-H85 2007-03-23 京都大学大学院理学研究科物理学・宇宙物理学専攻 (主査)教授 小山 勝二, 教授 笹尾 登, 助教授 鶴 剛 学位規則第4条第1項該当
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