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Dissecting X-ray-Emitting Gas Around the Center of Our Galaxy
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; Grosso, N.10; Haggard, D.11; Houck, J.3; Ji, L.12; Li, Z.13; Neilsen, J.3,14; Porquet, D.10; Ripple, F.2; Shcherbakov, R. V.15
2013-08-30
Source PublicationSCIENCE
ISSN0036-8075
Volume341Issue:6149Pages:981-983
Corresponding AuthorWang, QD (reprint author), Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England. Email: wqd@astro.umass.edu
AbstractMost 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.
Subject AreaScience & Technology - Other Topics
WOS HeadingsScience & Technology
DOI10.1126/science.1240755
WOS KeywordSGR-A-ASTERISK ; SUPERMASSIVE BLACK-HOLE ; ADVECTION-DOMINATED ACCRETION ; GALACTIC-CENTER ; SAGITTARIUS-A ; GRMHD SIMULATIONS ; STELLAR ORBITS ; NUMERICAL-SIMULATION ; BRIGHTEST FLARE ; CENTRAL PARSEC
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000323652300036
Citation statistics
Cited Times:141[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9778
Collection暗物质和空间天文实验室
Affiliation1.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
11.Northwestern Univ, Dept Phys & Astron, Ctr Interdisciplinary Explorat & Res Astrophys, Evanston, IL 60208 USA
12.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
13.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
14.Boston Univ, Boston, MA 02215 USA
15.Univ Maryland, Dept Astron, College Pk, MD 20742 USA
Recommended Citation
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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