NGC 5252: a pair of radio-emitting active galactic nuclei?

doi:10.1093/mnrasl/slw160

	NGC 5252: a pair of radio-emitting active galactic nuclei?
	Yang, Xiaolong 1,2; Yang, Jun 3,4; Paragi, Zsolt 5; Liu, Xiang 1,6; An, Tao 4,6; Bianchi, Stefano 7; Ho, Luis C.8,9; Cui, Lang 1,6; Zhao, Wei 4,6; Wu, Xiaocong 4,6
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017
卷号	464 期号:1 页码:L70-L74
关键词	galaxies: individual: NGC 5252 galaxies: jets radio continuum: galaxies X-rays: individual: CXO J133815.6+043255
ISSN号	0035-8711
DOI	10.1093/mnrasl/slw160
通讯作者	Yang, Jun(jun.yang@chalmers.se)
英文摘要	The X-ray source CXO J133815.6+043255 has counterparts in the UV, optical, and radio bands. Based on the multiband investigations, it has been recently proposed by Kim et al. as a rarely seen off-nucleus ultraluminous X-ray (ULX) source with a black hole mass of >= 10(4)M(circle dot) in the nearby Seyfert galaxy NGC 5252. To explore its radio properties at very high angular resolution, we performed very long-baseline interferometry (VLBI) observations with the European VLBI Network (EVN) at 1.7 GHz. We find that the radio counterpart is remarkably compact among the known ULXs. It does not show a resolved structure with a resolution of a few milliarcsecond (mas), and the total recovered flux density is comparable to that measured in earlier sub-arcsecond-resolution images. The compact radio structure, the relatively flat spectrum, and the high radio luminosity are consistent with a weakly accreting supermassive black hole in a low-luminosity active galactic nucleus. The nucleus of NGC 5252 itself has similar radio properties. We argue that the system represents a relatively rare pair of active galactic nuclei, where both components emit in the radio.
WOS关键词	X-RAY SOURCE ; MASS BLACK-HOLE ; ESO 243-49 HLX-1 ; NEARBY GALAXIES ; MINOR MERGER ; SOLAR MASSES ; 5408 X-1 ; CANDIDATE ; EMISSION ; BINARY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000403097500015
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/22994]
专题	中国科学院紫金山天文台
通讯作者	Yang, Jun
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chalmers, Dept Earth & Space Sci, Onsala Space Observ, SE-43992 Onsala, Sweden 4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 5.JIVE, Postbus 2, NL-7990 AA Dwingeloo, Netherlands 6.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 7.Univ Roma Tre, Dipartimento Matemat & Fis, Via Vasca Navale 84, I-00146 Rome, Italy 8.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 9.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Yang, Xiaolong,Yang, Jun,Paragi, Zsolt,et al. NGC 5252: a pair of radio-emitting active galactic nuclei?[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,464(1):L70-L74.
APA	Yang, Xiaolong.,Yang, Jun.,Paragi, Zsolt.,Liu, Xiang.,An, Tao.,...&Wu, Xiaocong.(2017).NGC 5252: a pair of radio-emitting active galactic nuclei?.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,464(1),L70-L74.
MLA	Yang, Xiaolong,et al."NGC 5252: a pair of radio-emitting active galactic nuclei?".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 464.1(2017):L70-L74.