中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 上海天文台
  3. 中国科学院上海天文台
The black hole fundamental plane in low-excitation radio galaxies

文献类型：期刊论文

作者Li, Shuang-Liang1,2; Gu, Minfeng2
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018-11-01
卷号481期号:1页码:L45-L48
关键词accretion, accretion discs black hole physics galaxies: active methods: statistical
ISSN号0035-8711
DOI10.1093/mnrasl/sly154
英文摘要The radio-X-ray slope in the fundamental plane of radio-loud active galactic nuclei (AGNs) has been found to be steeper than that of radio-quiet AGNs in previous studies. In this paper, we reinvestigate the fundamental plane in radio-loud AGNs by compiling a sample of 13 low-excitation radio galaxies (LERGs) from the 3CR radio galaxies, for the reason that the accretion mode in LERGs is believed to be a radiatively inefficient accretion flow. All the sources in our sample have data available both at the 5-GHz core radio luminosity as detected by VLA/VLBI/VLBA and at the core X-ray luminosity as detected by Chandra/XMM-Newton. Surprisingly, we find that the slope in the fundamental plane (logL(R) = 0.52log L-X + 0.84log M-BH + 10.84) of LERGs is consistent with that reported by Merloni et al. However, the normalization is found to be shifted by about 0.7 dex, which could be due to the difference in the magnetic field strength in different objects. A shallower slope of the L-R-L-X relationship (L-R similar to L-X(0.63)) is also found for our sample, which demonstrates that the X-rayemission in LERGs may come from the accretion disc, rather than jets suggested by previous works.
资助项目National Nature Science Foundation of China (NSFC)[11773056] ; National Nature Science Foundation of China (NSFC)[11473054] ; National Nature Science Foundation of China (NSFC)[U1531245] ; National Nature Science Foundation of China (NSFC)[11873073] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences (CAS)[2015216] ; Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-SYS023] ; National Aeronautics and Space Administration (NASA)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000451569100010
出版者OXFORD UNIV PRESS
源URL[http://119.78.226.72/handle/331011/32055]  
专题中国科学院上海天文台
通讯作者Li, Shuang-Liang
作者单位1.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Li, Shuang-Liang,Gu, Minfeng. The black hole fundamental plane in low-excitation radio galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,481(1):L45-L48.
APA Li, Shuang-Liang,&Gu, Minfeng.(2018).The black hole fundamental plane in low-excitation radio galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,481(1),L45-L48.
MLA Li, Shuang-Liang,et al."The black hole fundamental plane in low-excitation radio galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 481.1(2018):L45-L48.

入库方式： OAI收割

来源：上海天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。