| A Jet Deceleration Model on TeV BL Lacertae Objects |
| Wang JC(王建成) ; Li HQ(李惠泉); Xue L(薛力); Wang, JC (reprint author), Chinese Acad Sci, United Lab Opt Astron, Kunming, Yunnan Province, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2004-12-10
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| 卷号 | 617期号:1页码:113-122 |
| DOI | 10.1086/425354
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| 产权排序 | 第1完成单位
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| 收录类别 | SCI
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| 关键词 | Galaxies : Active
Bl Lacertae Objects : Individual (Markarian 421
Galaxies : Jets
Markarian 501
Gamma Rays : Theory
Pks 2155-304)
Radiation Mechanisms : Nonthermal
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| 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. |
| 语种 | 英语
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| 学科领域 | Astronomy & Astrophysics
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| 文章类型 | Article
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| ISSN | 0004-637X
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| URL | 查看原文
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| 归档日期 | 2004-12-24
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| WOS研究方向 | Astronomy & Astrophysics
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| WOS类目 | Astronomy & Astrophysics
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| 关键词[WOS] | ACTIVE GALAXY MARKARIAN-421
; GAMMA-RAY BURSTS
; PARTICLE-ACCELERATION
; SYNCHROTRON-RADIATION
; MAGNETIC-FIELDS
; INTERNAL SHOCKS
; GALACTIC NUCLEI
; EMISSION
; BLAZARS
; ENERGY
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4939
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| 专题 | 高能天体物理研究组
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| 通讯作者 | Wang, JC (reprint author), Chinese Acad Sci, United Lab Opt Astron, Kunming, Yunnan Province, Peoples R China. |
推荐引用方式
GB/T 7714 |
Wang JC,Li HQ,Xue L,et al. A Jet Deceleration Model on TeV BL Lacertae Objects[J]. ASTROPHYSICAL JOURNAL,2004,617(1):113-122.
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| APA |
王建成,李惠泉,薛力,&Wang, JC .(2004).A Jet Deceleration Model on TeV BL Lacertae Objects.ASTROPHYSICAL JOURNAL,617(1),113-122.
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| MLA |
王建成,et al."A Jet Deceleration Model on TeV BL Lacertae Objects".ASTROPHYSICAL JOURNAL 617.1(2004):113-122.
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