THE EFFECT OF CORONAL RADIATION ON A RESIDUAL INNER DISK IN THE LOW/HARD SPECTRAL STATE OF BLACK HOLE X-RAY BINARY SYSTEMS
文献类型：期刊论文
| 作者 | Liu BF(刘碧芳)1,5 ; Done, C2; Taam, RE3,4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2011-01 |
| 卷号 | 726期号:1 |
| 关键词 | accretion, accretion disks black hole physics X-rays: binaries X-rays: stars |
| ISSN号 | 0004-637X |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Liu, BF (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. |
| 英文摘要 | 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. |
| 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] | ADVECTION-DOMINATED ACCRETION ; LOW-HARD STATE ; COOL DISKS ; THIN DISK ; TRANSITIONS ; FLOW ; EVAPORATION ; ADAF ; EMISSION |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/0004-637X/726/1/10/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000285411300010 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5018]  |
| 专题 | 云南天文台_高能天体物理研究组 |
| 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 |
| 推荐引用方式 GB/T 7714 | Liu BF,Done, C,Taam, RE. 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.(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). |
入库方式： OAI收割
来源：云南天文台
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