The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State
文献类型：期刊论文
| 作者 | Qiao EL(乔二林)1,2,3 ; Liu BF(刘碧芳)1,3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2010 |
| 卷号 | 62期号:3页码:661-669 |
| 关键词 | accretion, accretion disk stars: individual (XTE J1118+480) X-rays: stars |
| ISSN号 | 0004-6264 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qiao, E (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | We investigate the spectral features of accretion flows composed of an outer cool, optically thick disk and inner hot, optically thin, advection dominated accretion flows (ADAF) within the framework of disk and corona with mass evaporation (Liu et al. 2002a, ApJ, 575, 1 I 7). In this work, both the magnetic field and Compton scattering of soft photons from the disk by electrons in the corona are included to calculate the evaporation rates at different distances. The disk is truncated at the distance where the evaporation rate equals to the accretion rate [(sic)(evap)(r(tr)) = (sic)]. For a series of accretion rates, the corresponding truncation radii are calculated out, with which we are able to calculate the emergent spectra from the inner ADAF + outer disk + corona. At very low accretion rates, the spectra are similar to that of a pure ADAF because the disk is truncated at large distances. The disk component becomes important at high accretion rates since the truncation occurs at small distances. An anti-correlation between the Eddington ratio, xi L(0.5-25keV)/L(Edd), and the hard X-ray photon index, Gamma(3-25) keV in low/hard states is predicted by the model. Comparing the theoretical results with observations, we find that our model can reproduce the anti-correlation between the Eddington ratio, xi, and the hard X-ray photon index observed for the X-ray binary XTE J1118+480. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | X-RAY BINARIES ; ADVECTION-DOMINATED ACCRETION ; ACTIVE GALACTIC NUCLEI ; TRANSIENT XTE J1118+480 ; BLACK-HOLE ACCRETION ; INNER COOL DISKS ; HARD STATE ; THIN DISK ; FLOW ; TRANSITION |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/62/3/661 |
| 语种 | 英语 |
| WOS记录号 | WOS:000279835200012 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5001]  |
| 专题 | 云南天文台_高能天体物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.National Astronomical Observatories /Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, P. R. China 2.Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, P. R. China |
| 推荐引用方式 GB/T 7714 | Qiao EL,Liu BF. The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(3):661-669. |
| APA | Qiao EL,&Liu BF.(2010).The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(3),661-669. |
| MLA | Qiao EL,et al."The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.3(2010):661-669. |
入库方式： OAI收割
来源：云南天文台
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