THICK ACCRETION DISK MODEL FOR ULTRALUMINOUS SUPERSOFT SOURCES
文献类型：期刊论文
| 作者 | Gu, Wei-Min1,2,5; Sun, Mou-Yuan1,2; Lu, You-Jun3,6 ; Yuan, Feng1,2,4,5; Liu, Ji-Feng3,6
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2016-02-10 |
| 卷号 | 818期号:1 |
| 关键词 | accretion, accretion disks black hole physics X-rays: binaries |
| 英文摘要 | We propose a geometrically thick, super-Eddington accretion disk model, where an optically thick wind is not necessary, to understand ultraluminous supersoft sources (ULSs). For high mass accretion rates (M)over dot greater than or similar to 30(M)over dot (Edd) and not small inclination angles theta greater than or similar to 25 degrees, where (M)over dot (Edd). is the Eddington accretion rate, the hard photons from the hot inner region may be shaded by the geometrically thick inner disk, and therefore only the soft photons from the outer thin disk and the outer photosphere of the thick disk can reach the observer. Our model can naturally explain the approximate relation between the typical thermal radius and the thermal temperature, R-bb proportional to T-bb(-2). Moreover, the thick disk model can unify ULSs and normal ultraluminous X-ray sources, where the different observational characteristics are probably related to the inclination angle and the mass accretion rate. By comparing our model with the optically thick outflow model, we find that a lower mass accretion rate is required in our model. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369605600004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5433]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China 2.Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Fujian, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, 20A Datun Rd, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Xiamen Univ, SHAO XMU Joint Ctr Astrophys, Xiamen 361005, Fujian, Peoples R China 6.Univ Chinese Acad Sci, Coll Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, Wei-Min,Sun, Mou-Yuan,Lu, You-Jun,et al. THICK ACCRETION DISK MODEL FOR ULTRALUMINOUS SUPERSOFT SOURCES[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,818(1). |
| APA | Gu, Wei-Min,Sun, Mou-Yuan,Lu, You-Jun,Yuan, Feng,&Liu, Ji-Feng.(2016).THICK ACCRETION DISK MODEL FOR ULTRALUMINOUS SUPERSOFT SOURCES.ASTROPHYSICAL JOURNAL LETTERS,818(1). |
| MLA | Gu, Wei-Min,et al."THICK ACCRETION DISK MODEL FOR ULTRALUMINOUS SUPERSOFT SOURCES".ASTROPHYSICAL JOURNAL LETTERS 818.1(2016). |
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来源：国家天文台
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