Fundamental Plane of Black Hole Activity in the?Quiescent Regime
文献类型：期刊论文
| 作者 | Xie,Fu-Guo; Yuan,Feng |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-02-13 |
| 卷号 | 836期号:1 |
| 关键词 | accretion, accretion disks black hole physics galaxies: active methods: statistical |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa5b90 |
| 英文摘要 | Abstract A correlation among the radio luminosity ( L R ), X-ray luminosity ( L X ), and black hole (BH) mass ( M BH ) in active galactic nuclei (AGNs) and BH binaries is known to exist and is called the “fundamental plane” of BH activity. Yuan & Cui predict that the radio/X-ray correlation index, ξ X , changes from ξ X ≈ 0.6 to ξ X ≈ 1.2 – 1.3 when L X / L Edd decreases below a critical value of? ～ 10 ? 6 . While many works favor such a change, there are also several works claiming the opposite. In this paper, we gather from the?literature the?largest quiescent AGN (defined as L X / L Edd ? 10 ? 6 ) sample to date, consisting of 75 sources. We find that these quiescent AGNs follow a ξ X ≈ 1.23 radio/X-ray relationship, in excellent agreement with the Yuan & Cui prediction. The reason for the discrepancy between the present result and some previous works is that their samples contain not only quiescent sources but also “normal” ones (i.e., L X / L Edd ? 10 ? 6 ). In this case, the quiescent sources will mix up with those normal ones in L R and L X . The value of ξ X will then be between 0.6 and ～1.3, with the exact value being determined by the sample composition, i.e., the fraction of the quiescent and normal sources. Based on this result, we propose that a more physical way to study the fundamental plane is to replace L R and L X with L R / L Edd and L X / L Edd , respectively. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-836-1-AA5B90 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://119.78.226.72/handle/331011/32131]  |
| 专题 | 中国科学院上海天文台 |
| 作者单位 | Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China; fgxie@shao.ac.cn, fyuan@shao.ac.cn |
| 推荐引用方式 GB/T 7714 | Xie,Fu-Guo,Yuan,Feng. Fundamental Plane of Black Hole Activity in the?Quiescent Regime[J]. The Astrophysical Journal,2017,836(1). |
| APA | Xie,Fu-Guo,&Yuan,Feng.(2017).Fundamental Plane of Black Hole Activity in the?Quiescent Regime.The Astrophysical Journal,836(1). |
| MLA | Xie,Fu-Guo,et al."Fundamental Plane of Black Hole Activity in the?Quiescent Regime".The Astrophysical Journal 836.1(2017). |
入库方式： OAI收割
来源：上海天文台
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