A compact core-jet structure in the changing-look Seyfert NGC 2617

doi:10.1093/mnras/stab706

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	A compact core-jet structure in the changing-look Seyfert NGC 2617
	Yang, Jun 13,14; Paragi, Zsolt 13; Beswick, Robert J.12; Chen, Wen 11; van Bemmel, Ilse M.13; Wu, Qingwen 10; An, Tao 9; Wu, Xiaocong 9; Fan, Lulu 6,7,8; Oonk, J. B. R.3,4,5
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2021-05-01
卷号	503 期号:3 页码:3886-3895
关键词	galaxies: active galaxies: individual: NGC 2617 galaxies: jets galaxies: Seyfert radio continuum: galaxies
ISSN号	0035-8711
DOI	10.1093/mnras/stab706
通讯作者	Yang, Jun(jun.yang@chalmers.se)
英文摘要	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.
资助项目	National 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]
WOS关键词	RADIO-SOURCES ; RELATIVISTIC JETS ; VARIABILITY ; GALAXIES ; EMISSION ; QUASARS ; SKY ; DISCOVERY ; CATALOG ; ORIGIN
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000649000600052
资助机构	National Key Research and Development Program of China ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; European Commission ; National Aeronautics and Space Administration ; EVN
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/4194]
专题	星系宇宙学研究团组
通讯作者	Yang, Jun
作者单位	1.Changzhou Inst Technol, Sch Comp Informat Engn, Changzhou 213032, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Peoples R China 3.Netherlands Inst Radio Astron ASTRON, NL-7991 PD Dwingeloo, Netherlands 4.Leiden Univ, Leiden Observ, Pob 9513, NL-2300 RA Leiden, Netherlands 5.SURFsara, POB 94613, NL-1090 GP Amsterdam, Netherlands 6.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China 7.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China 8.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China 9.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China 10.Huazhong Univ Sci & Technol, Sch Phys, Dept Astron, Wuhan 430074, Peoples R China
推荐引用方式 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, Wen.,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.