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Dissecting X-ray-Emitting Gas Around the Center of Our Galaxy
文献类型：期刊论文
| 作者 | Wang, Q. D.1,2; Nowak, M. A.3; Markoff, S. B.4; Baganoff, F. K.3; Nayakshin, S.5; Yuan, F.6; Cuadra, J.7; Davis, J.3; Dexter, J.8,9; Fabian, A. C.1 |
| 刊名 | SCIENCE
 |
| 出版日期 | 2013-08-30 |
| 卷号 | 341期号:6149页码:981-983 |
| 英文摘要 | Most supermassive black holes (SMBHs) are accreting at very low levels and are difficult to distinguish from the galaxy centers where they reside. Our own Galaxy's SMBH provides an instructive exception, and we present a close-up view of its quiescent x-ray emission based on 3 megaseconds of Chandra observations. Although the x-ray emission is elongated and aligns well with a surrounding disk of massive stars, we can rule out a concentration of low-mass coronally active stars as the origin of the emission on the basis of the lack of predicted iron (Fe) K alpha emission. The extremely weak hydrogen (H)-like Fe K alpha line further suggests the presence of an outflow from the accretion flow onto the SMBH. These results provide important constraints for models of the prevalent radiatively inefficient accretion state. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | SGR-A-ASTERISK ; SUPERMASSIVE BLACK-HOLE ; ADVECTION-DOMINATED ACCRETION ; GALACTIC-CENTER ; SAGITTARIUS-A ; GRMHD SIMULATIONS ; STELLAR ORBITS ; NUMERICAL-SIMULATION ; BRIGHTEST FLARE ; CENTRAL PARSEC |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000323652300036 |
| 源URL | [http://119.78.226.72/handle/331011/18013]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England 2.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 3.MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA 4.Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands 5.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England 6.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 7.Pontificia Univ Catolica Chile, Inst Astrofis, Santiago, Chile 8.Univ Calif Berkeley, Theoret Astrophys Ctr, Berkeley, CA 94720 USA 9.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 10.Univ Strasbourg, Observ Astron Strasbourg, CNRS, UMR 7550, Strasbourg, France |
| 推荐引用方式 GB/T 7714 | Wang, Q. D.,Nowak, M. A.,Markoff, S. B.,et al. Dissecting X-ray-Emitting Gas Around the Center of Our Galaxy[J]. SCIENCE,2013,341(6149):981-983. |
| APA | Wang, Q. D..,Nowak, M. A..,Markoff, S. B..,Baganoff, F. K..,Nayakshin, S..,...&Shcherbakov, R. V..(2013).Dissecting X-ray-Emitting Gas Around the Center of Our Galaxy.SCIENCE,341(6149),981-983. |
| MLA | Wang, Q. D.,et al."Dissecting X-ray-Emitting Gas Around the Center of Our Galaxy".SCIENCE 341.6149(2013):981-983. |
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