| ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS | |
Taam, RE1,2; Liu BF(刘碧芳)3 ; Meyer, F4; Meyer-Hofmeister, E4; Taam, RE (reprint author), Northwestern Univ, Dept Phys & Astron, 2131 Tech Dr, Evanston, IL 60208 USA.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2008-11-20 | |
| 卷号 | 688期号:1页码:527-536 |
| DOI | 10.1086/591901 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | Black Hole Physics Accretion Stars: Individual (Gx 339-4) Accretion Disks X-rays: Binaries X-rays: Stars |
| 摘要 | We investigate the formation of cool disks in the innermost regions of black hole X-ray transient systems in the low/hard state. Taking into account the combined cooling associated with the Compton and conductive energy transport processes in a corona, we describe the radial structure of a disk for a range of mass accretion rates. The mass flow in an optically thick inner region can be maintained by the condensation of matter from a corona, with the disk temperature and luminosity varying continuously as a function of the accretion rate. Although such a disk component can be present, the contribution of the optically thick disk component to the total luminosity can be small, since the mass flow due to condensation in the optically thick disk underlying the corona can be significantly less than the mass flow in the corona. The model is applied to the observations of the low/hard state of the black hole source GX 339-4 at luminosities of similar to 0.01L(Edd) and is able to explain the temperature of the thermal component at the observed luminosities. Since conductive cooling dominates Compton cooling at low mass accretion rates, the luminosity corresponding to the critical mass accretion rate above which a weak thermal disk component can be present in the low/hard state is estimated to be as low as 0.001L(Edd). |
| 项目资助者 | Theoretical Institute for Advanced Research in Astrophysics (TIARA) ; Academia Sinica ; National Science Council Excellence Projects program in Taiwan ; NSC(96-2752-M-007-007-PAE) ; National Natural Science Foundation of China(10533050, 10773028) |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000260769700041 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | ADVECTION-DOMINATED ACCRETION ; CANDIDATE SWIFT J1753.5-0127 ; LOW/HARD STATE ; SPECTRAL STATE ; CORONAL FLOW ; THIN DISK ; TRANSITION ; EVAPORATION ; ADAF ; QUIESCENCE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4960 |
| 专题 | 高能天体物理研究组 |
| 通讯作者 | Taam, RE (reprint author), Northwestern Univ, Dept Phys & Astron, 2131 Tech Dr, Evanston, IL 60208 USA. |
| 作者单位 | 1.Northwestern University, Department of Physics and Astronomy, 2131 Tech Drive, Evanston, IL 60208 2.ASIAA/TIARA, P.O. Box 23-141, Taipei, 10617 Taiwan; ASIAA/National Tsing Hua University-TIARA, Hsinchu, Taiwan 3.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China 4.Max-Planck-Institut für Astrophysik, Karl Schwarzschildstraße 1, D-85740 Garching, Germany |
| 推荐引用方式 GB/T 7714 | Taam, RE,Liu BF,Meyer, F,et al. ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS[J]. ASTROPHYSICAL JOURNAL,2008,688(1):527-536. |
| APA | Taam, RE,Liu BF,Meyer, F,Meyer-Hofmeister, E,&Taam, RE .(2008).ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS.ASTROPHYSICAL JOURNAL,688(1),527-536. |
| MLA | Taam, RE,et al."ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS".ASTROPHYSICAL JOURNAL 688.1(2008):527-536. |
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