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Radio Activity of Supermassive Black Holes with Extremely High Accretion Rates

文献类型：期刊论文

作者Yang, Xiaolong1,2; Yao, Su1,3; Yang, Jun2,4; Ho, Luis C.1,5; An, Tao2; Wang, Ran1,5; Baan, Willem A.6,7; Gu, Minfeng8; Liu, Xiang6; Yang, Xiaofeng6
刊名ASTROPHYSICAL JOURNAL
出版日期2020-12-01
卷号904期号:2页码:200
ISSN号0004-637X
关键词Supermassive black holes Active galaxies Jets Active galactic nuclei
DOI10.3847/1538-4357/abb775
产权排序6
英文摘要Radio emission from the high- and super-Eddington accreting active galactic nuclei (AGNs) has various origins: a persistent jet, the magnetized corona, and the wind-like outflows. It is still unclear which is the leading mechanism responsible for the observed radio emission and how the radio emission is related to other characteristic parameters such as the Eddington ratio and black hole mass. In this paper, we present the 5 GHz Very Large Array (VLA) observational results of a sample of 25 extremely high Eddington accreting supermassive black holes (EESBHs, the Eddington ratio lambda(Edd) close to or above 1) in narrow-line Seyfert 1 galaxies, among which 22 sources are detected. Most of the EESBHs show a compact radio structure from a few hundred parsecs to 1 kpc scale. We estimated the lowest star formation rate surface density required for producing the observed radio emission and found that it is higher than the largest value previously detected in circumnuclear starburst galaxies, implying that the radio emission is from the AGN activity. Along with a comparison sample, we find an overall inverse lambda(Edd) correlation ranging from sub- to super-Eddington ratios. The high-Eddington and mildly super-Eddington AGNs (-0.5 < log lambda(Edd) < 0.6) have a radio-to-X-ray luminosity ratio L-R/L-X similar to 10(-5)-10(-4) and a steep radio spectrum, supporting that the radio emission is from transient ejecta (outflows) of corona; however, the jet contribution cannot be entirely ruled out. Our highly super-Eddington sources (log lambda(Edd) greater than or similar to 0.6) have a flatter radio spectrum, along with its low radio luminosity: L-R/L-X similar to 10(-5) ; their radio emission is likely dominated by a magnetized corona, and a radiation-pressure-caused jet is also proposed in this paper.
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WOS关键词LINE SEYFERT 1 ; X-RAY BINARY ; GALACTIC NUCLEI ; SUPERNOVA-REMNANTS ; TIDAL DISRUPTION ; ULTRALUMINOUS STATE ; VLA OBSERVATIONS ; JET DIRECTIONS ; SPECTRAL INDEX ; RAPID GROWTH
资助项目National Key R&D Program of China[2018YFA0404603] ; National Key R&D Program of China[2016YFA0400702] ; National Key R&D Program of China[2016YFA0400703] ; National Science Foundation of China[11873073] ; National Science Foundation of China[11991052] ; National Science Foundation of China[11721303] ; KIAA-CAS fellowship - Peking University ; KIAA-CAS fellowship - Chinese Academy of Sciences ; Boya fellowship ; Association of Universities for Research in Astronomy, Inc., under NASA[NAS5-26555] ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000595694400001
资助机构National Key R&D Program of China ; National Science Foundation of China ; KIAA-CAS fellowship - Peking University ; KIAA-CAS fellowship - Chinese Academy of Sciences ; Boya fellowship ; Association of Universities for Research in Astronomy, Inc., under NASA ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah
源URL[http://ir.xao.ac.cn/handle/45760611-7/3740]  
专题星系宇宙学研究团组
通讯作者Yang, Xiaolong
作者单位1.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, SE-43992 Onsala, Sweden
5.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
6.Chinese Acad Sci, Key Lab Radio Astron, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China
7.Netherlands Inst Radio Astron ASTRON, NL-7991 PD Dwingeloo, Netherlands
8.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Xiaolong,Yao, Su,Yang, Jun,et al. Radio Activity of Supermassive Black Holes with Extremely High Accretion Rates[J]. ASTROPHYSICAL JOURNAL,2020,904(2):200.
APA Yang, Xiaolong.,Yao, Su.,Yang, Jun.,Ho, Luis C..,An, Tao.,...&Joshi, Ravi.(2020).Radio Activity of Supermassive Black Holes with Extremely High Accretion Rates.ASTROPHYSICAL JOURNAL,904(2),200.
MLA Yang, Xiaolong,et al."Radio Activity of Supermassive Black Holes with Extremely High Accretion Rates".ASTROPHYSICAL JOURNAL 904.2(2020):200.

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