KMS National Astronomical Observatories, CAS
| 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 Publication | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| ISSN | 0067-0049 |
| Volume | 252Issue:2Pages:18 |
| Abstract | As 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 Organization | 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 ; 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 |
| DOI | 10.3847/1538-4365/abc9b2 |
| WOS Keyword | MAGNETICALLY-DRIVEN JETS ; BALLISTIC SUPERLUMINAL MOTION ; RELATIVISTIC JETS ; PARTICLE-ACCELERATION ; RADIO GALAXY ; ACCRETION ; VARIABILITY ; FLOWS ; WINDS ; INSTABILITY |
| Language | 英语 |
| Funding Project | Ministry 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 Organization | 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 ; 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 Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000613669500001 |
| Publisher | IOP PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/79404 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Gong, Bi-Ping |
| Affiliation | 1.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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