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Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy

文献类型：期刊论文

作者Yang, Jun2; Paragi, Zsolt12; Frey, Sandor3,10,11; Gurvits, Leonid, I4,12; Liao, Mai5,6; Liu, Xiang7; Cui, Lang7; Yang, Xiaolong8; Chen, Wen2,9,13; Varenius, Eskil2
刊名Monthly Notices of the Royal Astronomical Society
出版日期2023-02-01
卷号520期号:4页码:5964-5973
关键词galaxies:active galaxies:dwarf individual galaxies:individual:SDSS J090613.77+561015.2 radio continuum:galaxies compact steep-spectrum radio-source counterparts galactic nuclei vlbi observations star-formation x-ray fundamental plane snapshot survey central engine agn Astronomy & Astrophysics
ISSN号0035-8711
DOI10.1093/mnras/stad493
产权排序9
文献子类Article
英文摘要Dwarf galaxies are characterized by a very low luminosity and low mass. Because of significant accretion and ejection activity of massive black holes, some dwarf galaxies also host lo w-luminosity acti ve galactic nuclei (AGNs). In a few dwarf AGNs, very long baseline interferometry (VLBI) observations have found faint non-thermal radio emission. SDSS J090613.77 + 561015.2 is a dwarf AGN owning an intermediate-mass black hole (IMBH) with a mass of M-BH = 3 . 6 (+5.9) (-2.3 )x 10 (5) M(? )and showing a rarely seen two-component radio structure in its radio nucleus. To further probe their nature, i.e. the IMBH jet activity, we performed additional deep observations with the European VLBI Network (EVN) at 1.66 and 4.99 GHz. We find the more diffuse emission regions and structure details. These new EVN imaging results allow us to reveal a two-sided jet morphology with a size up to about 150 mas (projected length similar to 140 pc) and a radio luminosity of about 3 x 10( 38) erg s( -1). The peak feature has an optically thin radio spectrum and thus more likely represents a relatively young ejecta instead of a jet base. The EVN study on SDSS J090613.77 + 561015.2 demonstrates the existence of episodic, relatively large-scale, and powerful IMBH jet activity in dwarf AGNs. Moreo v er, we collected a small sample of VLBI-detected dwarf AGNs and investigated their connections with normal AGNs. We notice that these radio sources in the dwarf AGNs tend to have steep spectra and small linear sizes, and possibly represent ejecta from scaled-down episodic jet activity.
语种英语
WOS记录号WOS:000943248300020
源URL[http://ir.xao.ac.cn/handle/45760611-7/6657]  
专题星系宇宙学研究团组
射电天文研究室_利用南山26米射电望远镜观测数据的文章
通讯作者Yang, Jun
作者单位1.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China
2.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-43992 Onsala, Sweden;
3.Institute of Physics, ELTE E ¨otv ¨os Lor ´and University, P ´azm ´any P ´eter s ´et ´any 1/A, H-1117 Budapest, Hungary;
4.Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, NL-2629 HS Delft, the Netherlands;
5.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, Anhui 230026, China;
6.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China;
7.Xinjiang Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, China;
8.Shanghai Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Shanghai 200030, China;
9.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650216, China;
10.CSFK, MTA Centre of Excellence, Konkoly Thege Mikl ´os ´ut 15-17, H-1121 Budapest, Hungary;
推荐引用方式
GB/T 7714		 Yang, Jun,Paragi, Zsolt,Frey, Sandor,et al. Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy[J]. Monthly Notices of the Royal Astronomical Society,2023,520(4):5964-5973.
APA Yang, Jun.,Paragi, Zsolt.,Frey, Sandor.,Gurvits, Leonid, I.,Liao, Mai.,...&Chang, Ning.(2023).Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy.Monthly Notices of the Royal Astronomical Society,520(4),5964-5973.
MLA Yang, Jun,et al."Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy".Monthly Notices of the Royal Astronomical Society 520.4(2023):5964-5973.

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