Unification of Radio Galaxies and their Accretion Jet Properties
文献类型：期刊论文
| 作者 | Wu, Qingwen1; Xu, Ya-Di2; Cao, Xinwu3
|
| 刊名 | JOURNAL OF ASTROPHYSICS AND ASTRONOMY
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 32期号:1-2页码:223-226 |
| 关键词 | Black hole physics accretion galaxies: jets |
| 英文摘要 | We investigate the relation between black hole mass, M(bh), and jet power, Q(jet), for a sample of BL Lacs and radio quasars. We find that BL Lacs are separated from radio quasars by the FR I/II dividing line in M(bh)-Q(jet) plane, which strongly supports the unification scheme of FR I/BL Lac and FR II/radio quasar. The Eddington ratio distribution of BL Lacs and radio quasars exhibits a bimodal nature with a rough division at L(bol)/L(Edd) similar to 0.01, which imply that they may have different accretion modes. We calculate the jet power extracted from advection-dominated accretion flow (ADAF), and find that it requires dimensionless angular momentum of black hole j similar or equal to 0.9 - 0.99 to reproduce the dividing line between FR I/II or BL Lac/radio quasar if dimensionless accretion rate (m) over dot = 0.01 is adopted, which is required by the above bimodal distribution of Eddington ratios. Our results suggest that black holes in radio galaxies are rapidly spinning. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; BL LACERTAE OBJECTS ; BLACK-HOLES ; FR-I ; FANAROFF ; ENERGY ; MODEL ; LINE |
| 收录类别 | SCI ; ISTP |
| 语种 | 英语 |
| WOS记录号 | WOS:000294539300045 |
| 源URL | [http://119.78.226.72/handle/331011/26396]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China 2.Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200030, Peoples R China 3.CAS, Shanghai Astron Observ, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Qingwen,Xu, Ya-Di,Cao, Xinwu. Unification of Radio Galaxies and their Accretion Jet Properties[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2011,32(1-2):223-226. |
| APA | Wu, Qingwen,Xu, Ya-Di,&Cao, Xinwu.(2011).Unification of Radio Galaxies and their Accretion Jet Properties.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,32(1-2),223-226. |
| MLA | Wu, Qingwen,et al."Unification of Radio Galaxies and their Accretion Jet Properties".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 32.1-2(2011):223-226. |
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来源：上海天文台
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