PMO OpenIR
J0906+6930: a radio-loud quasar in the early Universe
Zhang, Yingkang1,2; An, Tao1,3; Frey, Sandor1,4; Gabanyi, Krisztina E.4; Paragi, Zsolt5; Gurvits, Leonid I.5,6; Sohn, Bong Won7; Jung, Taehyun7; Kino, Motoki7,8; Lao, Baoqiang1; Lu, Yang1; Mohan, Prashanth1
2017-06-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume468Issue:1Pages:69-76
Corresponding AuthorAn, Tao(antao@shao.ac.cn)
AbstractRadio-loud high-redshift quasars (HRQs), although only a few of them are known to date, are crucial for studies of the growth of supermassive black holes (SMBHs) and the evolution of active galactic nuclei at early cosmological epochs. Radio jets offer direct evidence of SMBHs, and their radio structures can be studied with the highest angular resolution using very long baseline interferometry (VLBI). Here we report on the observations of three HRQs (J0131-0321, J0906+ 6930 and J1026+ 2542) at z > 5 using the Korean VLBI Network and VLBI Exploration of Radio Astrometry Arrays (together known as KaVA) with the purpose of studying their pc-scale jet properties. The observations were carried out at 22 and 43 GHz in 2016 January among the first-batch open-use experiments of KaVA. The quasar J0906+ 6930 was detected at 22 GHz but not at 43 GHz. The other two sources were not detected and upper limits to their compact radio emission are given. Archival VLBI imaging data and the singledish 15-GHz monitoring light curve of J0906+ 6930 were also acquired as complementary information. J0906+ 6930 shows a moderate-level variability at 15 GHz. The radio image is characterized by a core-jet structure with a total detectable size of -5 pc in projection. The brightness temperature, >= 1.9 x 1011 K, indicates relativistic beaming of the jet. The radio properties of J0906+ 6930 are consistent with a blazar. Follow-up VLBI observations will be helpful for determining its structural variation.
Keywordtechniques: interferometric galaxies: high-redshift quasars: individual: J0131-0321 quasars: individual: J0906+6930 quasars: individual: J1026+2542 radio continuum: galaxies.
DOI10.1093/mnras/stx392
WOS KeywordKOREAN VLBI NETWORK ; DIGITAL SKY SURVEY ; HIGH-FREQUENCY PEAKERS ; MASSIVE BLACK-HOLES ; AGN JETS ; SDSS J013127.34-032100.1 ; BRIGHTNESS TEMPERATURE ; DISTANT BLAZAR ; EARLY SCIENCE ; HIGH-REDSHIFT
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000398419200004
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23172
Collection中国科学院紫金山天文台
Corresponding AuthorAn, Tao
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
4.MTA Res Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, Hungary
5.Joint Inst VLBI ERIC, Postbus 2, NL-7990 AA Dwingeloo, Netherlands
6.Delft Univ Technol, Dept Astrodynam & Space Missions, Kluyverweg 1, NL-2629 HS Delft, Netherlands
7.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 305348, South Korea
8.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
Recommended Citation
GB/T 7714
Zhang, Yingkang,An, Tao,Frey, Sandor,et al. J0906+6930: a radio-loud quasar in the early Universe[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(1):69-76.
APA Zhang, Yingkang.,An, Tao.,Frey, Sandor.,Gabanyi, Krisztina E..,Paragi, Zsolt.,...&Mohan, Prashanth.(2017).J0906+6930: a radio-loud quasar in the early Universe.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(1),69-76.
MLA Zhang, Yingkang,et al."J0906+6930: a radio-loud quasar in the early Universe".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.1(2017):69-76.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Yingkang]'s Articles
[An, Tao]'s Articles
[Frey, Sandor]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Yingkang]'s Articles
[An, Tao]'s Articles
[Frey, Sandor]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Yingkang]'s Articles
[An, Tao]'s Articles
[Frey, Sandor]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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