| The existence of inner cool disks in the low/hard state of accreting black holes | |
Liu BF(刘碧芳)1 ; Taam, RE2,3; Meyer-Hofmeister, E4; Meyer, F4; Liu, BF
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2007-12-10 | |
| 卷号 | 671期号:1页码:695-705 |
| DOI | 10.1086/522619 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Black Hole Physics Accretion Accretion Disks X-rays : Binaries Stars : Individual (Gx 339-4 X-rays : Stars Swift J1753.5-0127) |
| 摘要 | The condensation of matter from a corona to a cool, optically thick inner disk is investigated for black hole X-ray transient systems in the low/hard state. A description of a simple model for the exchange of energy and mass between corona and disk originating from thermal conduction is presented, taking into account the effect of Compton cooling of the corona by photons from the underlying disk. It is found that a weak, condensation-fed inner disk can be present in the low/hard state of black hole transient systems for a range of luminosities that depends on the magnitude of the viscosity parameter. For alpha similar to 0.1-0.4, an inner disk can exist for luminosities in the range similar to(0.001-0.02) L-Edd. The model is applied to the X-ray observations of the black hole candidate sources GX 339 -4 and SWIFT J1753.5 -0127 in their low/hard state. It is found that Compton cooling is important in the condensation process, leading to the maintenance of cool inner disks in both systems. As the results of the evaporation/condensation model are independent of the black hole mass, it is suggested that such inner cool disks may contribute to the optical and ultraviolet emission of low-luminosity active galactic nuclei. |
| 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 | 2007-12-17 |
| WOS记录号 | WOS:000253331400058 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | ADVECTION-DOMINATED ACCRETION ; ACTIVE GALACTIC NUCLEI ; X-RAY BINARIES ; SPECTRAL STATE ; CORONAL FLOW ; CYGNUS X-1 ; THIN DISK ; HARD ; EVAPORATION ; ADAF |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4952 |
| 专题 | 高能天体物理研究组 |
| 通讯作者 | Liu, BF |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650011 Yunnan, China 2.Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 3.Institute of Astronomy and Astrophysics, Academia Sinica; and Theoretical Institute for Advanced Research in Astrophysics, Academia Sinica and National Tsing Hua University, Hsinchu 30013, Taiwan 4.Max-Planck-Institut für Astrophysik, D-85740 Garching, Germany |
| 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,Taam, RE,Meyer-Hofmeister, E,et al. The existence of inner cool disks in the low/hard state of accreting black holes[J]. ASTROPHYSICAL JOURNAL,2007,671(1):695-705. |
| APA | Liu BF,Taam, RE,Meyer-Hofmeister, E,Meyer, F,&Liu, BF.(2007).The existence of inner cool disks in the low/hard state of accreting black holes.ASTROPHYSICAL JOURNAL,671(1),695-705. |
| MLA | Liu BF,et al."The existence of inner cool disks in the low/hard state of accreting black holes".ASTROPHYSICAL JOURNAL 671.1(2007):695-705. |
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