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Understanding the Puzzling Acceleration of Jets of Active Galactic Nuclei
Xu, Qian1; Gong, Bi-Ping1; Liu, Meng-Xu1; Lu, Ru-Sen2,3,4; Yan, Xi2; Dong, Shi-Yin1
2021-02-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume252Issue:2Pages:18
AbstractAs relativistic plasma launches from a compact object at the center of a galaxy, the corresponding outflow should slow down with the increase of separation from the core due to energy dissipation along the path. However, some long-baseline observations of active galactic nucleus (AGN) jets show that the velocity of jets increases rather than decreases at a larger and larger separation from the core. The mechanism of such an acceleration of astrophysical jets has not been well understood so far, although much progress has been achieved on theoretical and observational perspectives. This paper illustrates the phenomenon of jet acceleration that emerged in some AGNs by the nonballistic model in which some nonconsecutive knots are produced by a continuous outflow at different distances from the central black hole; such knots appear to rotate along different radii at the same precession cone in the case of a precessing jet. The projection of the trajectories of such knots on the plane of the sky leads us to expect that jet components further from the core move at larger apparent velocities. The investigation provides a very simple scenario to the puzzling phenomena of astrophysical jets.
Funding OrganizationMinistry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS
DOI10.3847/1538-4365/abc9b2
WOS KeywordMAGNETICALLY-DRIVEN JETS ; BALLISTIC SUPERLUMINAL MOTION ; RELATIVISTIC JETS ; PARTICLE-ACCELERATION ; RADIO GALAXY ; ACCRETION ; VARIABILITY ; FLOWS ; WINDS ; INSTABILITY
Language英语
Funding ProjectMinistry of Science and Technology of the People's Republic of China[2020SKA0120300] ; Max Planck Partner Group of the MPG ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC)[11933007] ; Research Program of Fundamental and Frontier Sciences, CAS[ZDBS-LY-SLH011]
Funding OrganizationMinistry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Max Planck Partner Group of the MPG ; Max Planck Partner Group of the MPG ; CAS ; CAS ; Key Program of the National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Science Foundation of China (NSFC) ; Research Program of Fundamental and Frontier Sciences, CAS ; Research Program of Fundamental and Frontier Sciences, CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000613669500001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79406
Collection中国科学院国家天文台
Corresponding AuthorGong, Bi-Ping
Affiliation1.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
4.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
Recommended Citation
GB/T 7714
Xu, Qian,Gong, Bi-Ping,Liu, Meng-Xu,et al. Understanding the Puzzling Acceleration of Jets of Active Galactic Nuclei[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2021,252(2):18.
APA Xu, Qian,Gong, Bi-Ping,Liu, Meng-Xu,Lu, Ru-Sen,Yan, Xi,&Dong, Shi-Yin.(2021).Understanding the Puzzling Acceleration of Jets of Active Galactic Nuclei.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,252(2),18.
MLA Xu, Qian,et al."Understanding the Puzzling Acceleration of Jets of Active Galactic Nuclei".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 252.2(2021):18.
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