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
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2018-12-01
Volume239Issue:2Pages:17
DOI10.3847/1538-4365/aaed3b
Contribution Rank第1完成单位
Indexed BySCI
Keywordgalaxies: active galaxies: luminosity function mass function radio continuum: galaxies
Abstract

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.

Funding ProjectNational 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
Funding OrganizationNational 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
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0067-0049
URL查看原文
WOS IDWOS:000453835000001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE GALACTIC NUCLEI ; MOLONGLO REFERENCE CATALOG ; SUPERMASSIVE BLACK-HOLES ; JET-DISK SYMBIOSIS ; COMPLETE SAMPLE ; RELATIVISTIC JETS ; SOURCE POPULATION ; VLA OBSERVATIONS ; OPTICAL NUCLEI ; B2 SAMPLE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18647
Collection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
Corresponding AuthorYuan ZL(袁尊理)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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.
Files in This Item:
File Name/Size DocType Version Access License
Determining the Core(2605KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yuan ZL(袁尊理)]'s Articles
[Wang JC(王建成)]'s Articles
[Worrall, D. M.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yuan ZL(袁尊理)]'s Articles
[Wang JC(王建成)]'s Articles
[Worrall, D. M.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yuan ZL(袁尊理)]'s Articles
[Wang JC(王建成)]'s Articles
[Worrall, D. M.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Determining the Core Radio Luminosity Function of Radio AGNs via Copula.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.