YNAO OpenIR  > 高能天体物理研究组
Determining the Core Radio Luminosity Function of Radio AGNs via Copula
Yuan ZL(袁尊理)1,2,3; Wang JC(王建成)1,2,3; Worrall, D. M.4; Zhang, Bin-Bin5,6; Mao JR(毛基荣)1,2,3
发表期刊ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2018-12-01
卷号239期号:2页码:17
DOI10.3847/1538-4365/aaed3b
产权排序第1完成单位
收录类别SCI
关键词galaxies: active galaxies: luminosity function mass function radio continuum: galaxies
摘要

The radio luminosity functions (RLFs) of active galactic nuclei (AGNs) are traditionally measured based on total emission, which does not reflect the current activity of the central black hole. The increasing interest in compact radio cores of AGNs motivates determination of the RLF based on core emission (i.e., core RLF). In this work we have established a large sample (totaling 1207) of radio-loud AGNs, mainly consisting of radio galaxies (RGs) and steep-spectrum radio quasars (SSRQs). Based on the sample, we explore the relationship between core luminosity (L-c) and total luminosity (L-t) via a powerful statistical tool called "Copula." The conditional probability distribution p(log L-c| log L-t) is obtained. We derive the core RLF as a convolution of p(log L-c| log L-t) with the total RLF that was determined by previous work. We relate the separate RG and SSRQ core RLFs via a relativistic beaming model and find that SSRQs have an average Lorentz factor of gamma = 9.84(-2.50)(+3.61), and that most are seen within 8 degrees less than or similar to theta less than or similar to 45 degrees of the jet axis. Compared with the total RLF, which is mainly contributed by extended emission, the core RLF shows a very weak luminosity-dependent evolution, with the number density peaking around z. similar to. 0.8 for all luminosities. Differences between core and total RLFs can be explained in a framework involving a combination of density and luminosity evolutions where the cores have significantly weaker luminosity evolution than the extended emission.

资助项目National Natural Science Foundation of China[11673062] ; National Natural Science Foundation of China[11603066] ; National Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[U1738124] ; National Thousand Young Talents program of China ; Major Program of the Chinese Academy of Sciences[KJZD-EW-M06] ; Overseas Talent Program of Yunnan Province ; Hundred Talent Program
项目资助者National Natural Science Foundation of China[11673062, 11603066, 11573060, 11661161010, U1738124] ; National Thousand Young Talents program of China ; Major Program of the Chinese Academy of Sciences[KJZD-EW-M06] ; Overseas Talent Program of Yunnan Province ; Hundred Talent Program
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0067-0049
URL查看原文
WOS记录号WOS:000453835000001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALACTIC NUCLEI ; MOLONGLO REFERENCE CATALOG ; SUPERMASSIVE BLACK-HOLES ; JET-DISK SYMBIOSIS ; COMPLETE SAMPLE ; RELATIVISTIC JETS ; SOURCE POPULATION ; VLA OBSERVATIONS ; OPTICAL NUCLEI ; B2 SAMPLE
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18647
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Yuan ZL(袁尊理)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
4.HH Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK
5.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China
6.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, People's Republic of China
推荐引用方式
GB/T 7714
Yuan ZL,Wang JC,Worrall, D. M.,et al. Determining the Core Radio Luminosity Function of Radio AGNs via Copula[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2018,239(2):17.
APA Yuan ZL,Wang JC,Worrall, D. M.,Zhang, Bin-Bin,&Mao JR.(2018).Determining the Core Radio Luminosity Function of Radio AGNs via Copula.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,239(2),17.
MLA Yuan ZL,et al."Determining the Core Radio Luminosity Function of Radio AGNs via Copula".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 239.2(2018):17.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Determining the Core(2605KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Yuan ZL(袁尊理)]的文章
[Wang JC(王建成)]的文章
[Worrall, D. M.]的文章
百度学术
百度学术中相似的文章
[Yuan ZL(袁尊理)]的文章
[Wang JC(王建成)]的文章
[Worrall, D. M.]的文章
必应学术
必应学术中相似的文章
[Yuan ZL(袁尊理)]的文章
[Wang JC(王建成)]的文章
[Worrall, D. M.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Determining the Core Radio Luminosity Function of Radio AGNs via Copula.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。