| THE EFFECT OF CORONAL RADIATION ON A RESIDUAL INNER DISK IN THE LOW/HARD SPECTRAL STATE OF BLACK HOLE X-RAY BINARY SYSTEMS | |
Liu BF(刘碧芳)1,5 ; Done, C2; Taam, RE3,4; Liu, BF (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2011-01 | |
| 卷号 | 726期号:1 |
| DOI | 10.1088/0004-637X/726/1/10 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Black Hole Physics Accretion X-rays: Binaries Accretion Disks X-rays: Stars |
| 摘要 | Thermal conduction between a cool accretion disk and a hot inner corona can result in either evaporation of the disk or condensation of the hot corona. At low mass accretion rates, evaporation dominates and can completely remove the inner disk. At higher mass accretion rates, condensation becomes more efficient in the very inner regions, so that part of the mass accretes via a weak (initially formed) inner disk which is separated from the outer disk by a fully evaporated region at mid radii. At still higher mass accretion rates, condensation dominates everywhere, so there is a continuous cool disk extending to the innermost stable circular orbit. We extend these calculations by including the effect of irradiation by the hot corona on the disk structure. The flux which is not reflected is reprocessed in the disk, adding to the intrinsic thermal emission from gravitational energy release. This increases the seed photons for Compton cooling of the hot corona, enhancing condensation of the hot flow, and reinforcing the residual inner disk rather than evaporating it. Our calculations confirm that a residual inner disk can coexist with a hard, coronally dominated spectrum over the range of 0.006 < (m)over dot < 0.016 (for alpha = 0.2). This provides an explanation for the weak thermal component seen recently in the low/hard state of black hole X-ray binary systems. |
| 项目资助者 | National Natural Science Foundation of China [11033007, 10773028] ; National Basic Research Program of China-973 Program [2009CB824800] ; Theoretical Institute for Advanced Research in Astrophysics (TIARA) in the Academia Sinica Institute of Astronomy Astrophysics |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| 归档日期 | 2011-01-11 |
| WOS记录号 | WOS:000285411300010 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | ADVECTION-DOMINATED ACCRETION ; LOW-HARD STATE ; COOL DISKS ; THIN DISK ; TRANSITIONS ; FLOW ; EVAPORATION ; ADAF ; EMISSION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5018 |
| 专题 | 高能天体物理研究组 |
| 通讯作者 | Liu, BF (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China 2.Department of Physics, University of Durham, South Road, Durham, DH1 3LE, UK 3.Department of Physics and Astronomy, Northwestern University, 2131 Tech Drive, Evanston, IL 60208, USA 4.Academia Sinica Institute of Astronomy and Astrophysics-TIARA, P.O. Box 23-141, Taipei 10617, Taiwan 5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Liu BF,Done, C,Taam, RE,et al. THE EFFECT OF CORONAL RADIATION ON A RESIDUAL INNER DISK IN THE LOW/HARD SPECTRAL STATE OF BLACK HOLE X-RAY BINARY SYSTEMS[J]. ASTROPHYSICAL JOURNAL,2011,726(1). |
| APA | Liu BF,Done, C,Taam, RE,&Liu, BF .(2011).THE EFFECT OF CORONAL RADIATION ON A RESIDUAL INNER DISK IN THE LOW/HARD SPECTRAL STATE OF BLACK HOLE X-RAY BINARY SYSTEMS.ASTROPHYSICAL JOURNAL,726(1). |
| MLA | Liu BF,et al."THE EFFECT OF CORONAL RADIATION ON A RESIDUAL INNER DISK IN THE LOW/HARD SPECTRAL STATE OF BLACK HOLE X-RAY BINARY SYSTEMS".ASTROPHYSICAL JOURNAL 726.1(2011). |
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| THE EFFECT OF CORONA（240KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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