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A compact core-jet structure in the changing-look Seyfert NGC 2617
Yang, Jun1,2; Paragi, Zsolt2; Beswick, Robert J.3; Chen W(陈文)4; van Bemmel, Ilse M.2; Wu, Qingwen5; An, Tao6; Wu, Xiaocong6; Fan, Lulu7,8,9; Oonk, J. B. R.10,11,12; Liu, Xiang13; Wang, Weihua14
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2021-05-01
Volume503Issue:3Pages:3886-3895
DOI10.1093/mnras/stab706
Contribution Rank第4完成单位
Indexed BySCI
Keywordgalaxies: active galaxies: individual: NGC 2617 galaxies: jets galaxies: Seyfert radio continuum: galaxies
Abstract

The nearby face-on spiral galaxy NGC 2617 underwent an unambiguous 'inside-out' multiwavelength outburst in Spring 2013, and a dramatic Seyfert-type change probably between 2010 and 2012, with the emergence of broad optical emission lines. To search for the jet activity associated with this variable accretion activity, we carried out multiresolution and multiwavelength radio observations. Using the very long baseline interferometric (VLBI) observations with the European VLBI Network at 1.7 and 5.0 GHz, we find that NGC 2617 shows a partially synchrotron self-absorbed compact radio core with a significant core shift, and an optically thin steep-spectrum jet extending towards the north up to about 2 pc in projection. We also observed NGC 2617 with the electronic Multi-Element Remotely Linked Interferometer Network at 1.5 and 5.5 GHz, and revisited the archival data of the Very Large Array (VLA) and the Very Long Baseline Array (VLBA). The radio core had a stable flux density of similar to 1.4 mJy at 5.0 GHz between 2013 June and 2014 January, in agreement with the expectation of a supermassive black hole in the low accretion rate state. The northern jet component is unlikely to be associated with the 'inside-out' outburst of 2013. Moreover, we report that most optically selected changing-look active galactic nuclei (AGN) at z < 0.83 are sub-mJy radio sources in the existing VLA surveys at 1.4 GHz, and it is unlikely that they are more active than normal AGN at radio frequencies.

Funding ProjectNational Key Research and Development Program of China[2018YFA0404603] ; Chinese Academy of Sciences (CAS)[114231KYSB20170003] ; National Natural Science Foundation of China (NSFC)[11822303] ; National Natural Science Foundation of China (NSFC)[11773020] ; European Commission[RI-261525 NEXPReS] ; European Commission[283393] ; National Aeronautics and Space Administration ; EVN[RY005] ; EVN[EY021]
Funding OrganizationNational Key Research and Development Program of China[2018YFA0404603] ; Chinese Academy of Sciences (CAS)[114231KYSB20170003] ; National Natural Science Foundation of China (NSFC)[11822303, 11773020] ; European Commission[RI-261525 NEXPReS, 283393] ; National Aeronautics and Space Administration ; EVN[RY005, EY021]
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
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000649000600052
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordRADIO-SOURCES ; RELATIVISTIC JETS ; VARIABILITY ; GALAXIES ; EMISSION ; QUASARS ; SKY ; DISCOVERY ; CATALOG ; ORIGIN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24393
Collection射电天文研究组
Corresponding AuthorYang, Jun
Affiliation1.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden
2.Joint Institute for VLBI ERIC (JIVE), Postbus 2, NL-7990 AA Dwingeloo, the Netherlands
3.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK
4.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
5.Department of Astronomy, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
6.Shanghai Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 200030 Shanghai, China
7.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China
8.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei 230026, China
9.Shandong Provincial Key Lab of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Science, Shandong University, Weihai 264209, China
10.SURFsara, PO Box 94613, NL-1090 GP Amsterdam, the Netherlands
11.Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
12.Netherlands Institute for Radio Astronomy (ASTRON), NL-7991 PD Dwingeloo, the Netherlands
13.Xinjiang Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 150 Science 1-Street, 830011 Urumqi, China
14.School of Computer Information Engineering, Changzhou Institute of Technology, Changzhou 213032, China
Recommended Citation
GB/T 7714
Yang, Jun,Paragi, Zsolt,Beswick, Robert J.,et al. A compact core-jet structure in the changing-look Seyfert NGC 2617[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,503(3):3886-3895.
APA Yang, Jun.,Paragi, Zsolt.,Beswick, Robert J..,Chen W.,van Bemmel, Ilse M..,...&Wang, Weihua.(2021).A compact core-jet structure in the changing-look Seyfert NGC 2617.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,503(3),3886-3895.
MLA Yang, Jun,et al."A compact core-jet structure in the changing-look Seyfert NGC 2617".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 503.3(2021):3886-3895.
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