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The Composite X-Ray Spectrum of 3CRR Quasars
Zhou, Minhua1,2; Gu, Minfeng1
2020-04-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume893Issue:1Pages:16
AbstractThe reason for the difference between the composite X-ray spectrum for radio-loud quasars (RLQs) versus radio-quiet quasars (RQQs) is still unclear. To study this difference, we built a new composite X-ray spectrum of RLQs using Chandra X-ray data and Sloan Digital Sky Survey optical data for the sample of 3CRR quasars. We find the X-ray spectra of all 3CRR quasars, except for 3C 351, have no soft X-ray excess and can be fitted well with an absorbed power-law model. Our composite X-ray spectrum is similar to that of Shang et al. for RLQs, showing higher hard X-ray and lower soft X-ray flux than the composite X-ray spectrum of RQQs. Most blazar-like 3CRR quasars have higher X-ray flux than the median composite X-ray spectrum, which could be related to the contribution of beamed jet emission at X-ray band. From the literature, we find that nineteen 3CRR quasars have extended X-ray emission related to radio jets, indicating the inevitable contribution of jets at X-ray band. In contrast to RQQs, the X-ray photon index of 3CRR quasars does not correlate with the Eddington ratio. Our results suggest that the jet emission at X-ray band in RLQs could be related to the difference in composite X-ray spectrum between RLQs and RQQs.
KeywordQuasars Catalogs X-ray quasars Radio loud quasars Spectral energy distribution
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 ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration
DOI10.3847/1538-4357/ab7dca
WOS KeywordACTIVE GALACTIC NUCLEI ; MAGNETIC-FIELD STRENGTHS ; ALL-SKY SURVEY ; MG-II ABSORPTION ; RADIO-LOUD ; DATA RELEASE ; CHANDRA OBSERVATIONS ; VLA OBSERVATIONS ; UNIFIED SCHEMES ; JET EMISSION
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[U1831138] ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration
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 ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000528741200001
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/55075
Collection中国科学院国家天文台
Corresponding AuthorZhou, Minhua
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Minhua,Gu, Minfeng. The Composite X-Ray Spectrum of 3CRR Quasars[J]. ASTROPHYSICAL JOURNAL,2020,893(1):16.
APA Zhou, Minhua,&Gu, Minfeng.(2020).The Composite X-Ray Spectrum of 3CRR Quasars.ASTROPHYSICAL JOURNAL,893(1),16.
MLA Zhou, Minhua,et al."The Composite X-Ray Spectrum of 3CRR Quasars".ASTROPHYSICAL JOURNAL 893.1(2020):16.
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