NAOC Open IR
The X-ray emission in young radio active galactic nuclei
Liao, Mai1,2; Gu, Minfeng1; Zhou, Minhua1,2; Chen, Liang1
2020-09-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume497Issue:1Pages:482-497
AbstractIn this work, we investigated the X-ray emission for a sample of young radio active galactic nuclei (AGNs) by combining data from Chandra/XMM-Newton with data for other wavebands. We find strong correlations between the X-ray luminosity L-X at 2-10 keV and the radio luminosities L-R at 5 GHz for the VLBI radio-core, VLA radio-core and Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) component, indicating that both parsec- and kiloparsec-scale radio emissions are strongly correlated with X-ray emission in these sources. We find an approximately linear dependence of the radio on the X-ray luminosity in the sources with radiatively efficient accretion flows (i.e. the Eddington ratio R-edd greater than or similar to 10(-3)), with b similar to 1 (L-R proportional to L-X(b)) and xi(RX) similar to 1 in the fundamental plane using the VLBI data. The dependence is consistent with the re-analysed results of a previous study of Fan and Bai at R-edd greater than or similar to 10(-3), but is significantly different from the theoretical prediction of accretion flow as the origin of X-ray emission. In contrast to the case for radio-quiet quasars, there is no significant correlation between Gamma and the Eddington ratio. Our results seem to indicate that the X-ray emission of high-accretion young radio AGNs may be from the jet. We constructed the spectral energy distributions (SEDs) for 18 sources (most of which are in radiatively efficient accretion), namely nine galaxies and nine quasars with high-quality X-ray data, and find that the X-ray emission of most quasars is more luminous than that of normal radio-quiet quasars. This is clearly seen from the quasar composite SED, in which the X-ray emission is apparently higher than that of radio-quiet quasars, probably supporting jet-related X-ray emission in young radio AGNs. The possibility that the X-ray emission is from self-synchrotron Compton is discussed.
Keywordaccretion, accretion discs galaxies: active galaxies: jets quasars: general X-rays: galaxies
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA)
DOI10.1093/mnras/staa1559
WOS KeywordCOMPACT STEEP-SPECTRUM ; HOLE FUNDAMENTAL PLANE ; VLA OBSERVATIONS ; VLBI OBSERVATIONS ; LINEAR-REGRESSION ; COMPLETE SAMPLE ; BLACK-HOLES ; 5 GHZ ; JET ; GALAXIES
Language英语
Funding ProjectNational Science Foundation of China[11873073] ; National Science Foundation of China[U1531245] ; National Science Foundation of China[11773056] ; National Science Foundation of China[11473054] ; National Science Foundation of China[U1831138] ; Alfred P. Sloan Foundation ; National Science Foundation ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA)
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000574919600034
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/81719
Collection中国科学院国家天文台
Corresponding AuthorLiao, Mai; Gu, Minfeng; Chen, Liang
Affiliation1.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liao, Mai,Gu, Minfeng,Zhou, Minhua,et al. The X-ray emission in young radio active galactic nuclei[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,497(1):482-497.
APA Liao, Mai,Gu, Minfeng,Zhou, Minhua,&Chen, Liang.(2020).The X-ray emission in young radio active galactic nuclei.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,497(1),482-497.
MLA Liao, Mai,et al."The X-ray emission in young radio active galactic nuclei".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 497.1(2020):482-497.
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