CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS
文献类型：期刊论文
| 作者 | Huang, Lei1,2 ; Shen, Zhi-Qiang1,2; Gao, Feng1,3
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 745期号:2页码:1 |
| 关键词 | Galaxy: center submillimeter: general |
| 英文摘要 | We use a model of an accretion flow coupled with an emergent flare to interpret the latest 1.3 mm very long baseline interferometry (VLBI) measurements for Sagittarius A*. The visibility data constrained the distances from the flare center to the black hole center as d(EW) less than or similar to 20 R-g and d(NS) less than or similar to 80 R-g in the east-west and north-south directions, respectively. If interpreted by the hot-spot model, the flare was preferred to pass in front of the black hole at a radius much larger than d(EW). If interpreted by the episodic jet launched from a nearly edge-on hot accretion flow, the flare was preferred to be ejected with theta(j) greater than or similar to 40. off the black hole rotating axis. This method can be generalized to help us understand future submillimeter VLBI observations and study the millimeter/submillimeter variabilities in the vicinity of the Galactic center supermassive black hole. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SUPERMASSIVE BLACK-HOLE ; GALACTIC-CENTER ; ACCRETION FLOW ; SGR-A ; MILLIMETER-VLBI ; HORIZON ; SIMULATIONS ; EMISSION ; MODELS ; MILKY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000300228800005 |
| 源URL | [http://119.78.226.72/handle/331011/18108]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100864, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Lei,Shen, Zhi-Qiang,Gao, Feng. CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS[J]. ASTROPHYSICAL JOURNAL LETTERS,2012,745(2):1. |
| APA | Huang, Lei,Shen, Zhi-Qiang,&Gao, Feng.(2012).CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS.ASTROPHYSICAL JOURNAL LETTERS,745(2),1. |
| MLA | Huang, Lei,et al."CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS".ASTROPHYSICAL JOURNAL LETTERS 745.2(2012):1. |
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来源：上海天文台
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