A Jet Deceleration Model on TeV BL Lacertae Objects
文献类型：期刊论文
| 作者 | Wang JC(王建成) ; Li HQ(李惠泉); Xue L(薛力)
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2004-12-10 |
| 卷号 | 617期号:1页码:113-122 |
| 关键词 | BL Lacertae objects : individual (Markarian 421, Markarian 501, PKS 2155-304) galaxies : active galaxies : jets gamma rays : theory radiation mechanisms : nonthermal |
| ISSN号 | 0004-637X |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Wang, JC (reprint author), Chinese Acad Sci, United Lab Opt Astron, Kunming, Yunnan Province, Peoples R China. |
| 英文摘要 | The current understanding of the kinetics of known TeV BL Lac objects' jets is that they substantially decelerate from a subparsec scale with a large Lorentz factor, emitting TeV radiation to a parsec scale, where the observed radio component is predominantly subluminal or mildly relativistic. A decelerating jet model of TeV BL Lac objects including jet dynamics and particle injection is proposed. The jet plasma is assumed to be continuously injected at the base of the jet and to dissipate at some distance from the central core. It is found that the deceleration profile of the jet depends on the density distribution of the external medium, showing slower variation in an external medium with a fast-falling density profile. The dissipated kinetic energy of the jet is assumed to be transferred to electron acceleration. The relativistic electrons are injected along the jet and then produce synchrotron and inverse Compton emission. The general characteristics of the physical quantities of the jet are discussed. It is shown that the resulting spectral energy distributions (SEDs) mainly depend on the energy distribution of injected electrons in the dissipation region, the magnetic structure, and the viewing angle of the jet. The model describes the underlying undisturbed jet and is applied to fit the quiescent infrared to X-ray spectra of several TeV BL Lac objects. In this scenario, the dissipated bulk kinetic energy of TeV BL Lac objects can provide relativistic electrons for radiation, and their initial magnetic fields are under equipartition with the emitting electrons. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALAXY MARKARIAN-421 ; GAMMA-RAY BURSTS ; PARTICLE-ACCELERATION ; SYNCHROTRON-RADIATION ; MAGNETIC-FIELDS ; INTERNAL SHOCKS ; GALACTIC NUCLEI ; EMISSION ; BLAZARS ; ENERGY |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1086/425354/meta |
| 语种 | 英语 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4939]  |
| 专题 | 云南天文台_高能天体物理研究组 |
| 推荐引用方式 GB/T 7714 | Wang JC,Li HQ,Xue L. A Jet Deceleration Model on TeV BL Lacertae Objects[J]. ASTROPHYSICAL JOURNAL,2004,617(1):113-122. |
| APA | 王建成,李惠泉,&薛力.(2004).A Jet Deceleration Model on TeV BL Lacertae Objects.ASTROPHYSICAL JOURNAL,617(1),113-122. |
| MLA | 王建成,et al."A Jet Deceleration Model on TeV BL Lacertae Objects".ASTROPHYSICAL JOURNAL 617.1(2004):113-122. |
入库方式： OAI收割
来源：云南天文台
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