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Implications of Bulk Velocity Structures in AGN Jets
Yang JP(杨建平)1,2,3; Wang JC(王建成)1; Dai, BZ4; Gao XY(高小燕)1
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2009
卷号61期号:5页码:1153-1163
DOI10.1093/pasj/61.5.1153
产权排序第1完成单位
收录类别SCI ; EI
关键词Galaxies: Jets Radiation Mechanisms: Nonthermal
摘要

Synchrotron self-Compton (SSC) models and External Compton (EC) models of AGN jets with continually longitudinal and transverse bulk velocity structures have been constructed. The observed spectra show complex and interesting patterns in different velocity structures and viewing angles. These models were used to calculate the synchrotron and inverse Compton spectra of two typical BL Lac objects (BLO) (Mrk 421 and 0716+714) and (one) Flat Spectrum Radio Quasars (FSRQs) (3C 279), and to discuss the implications of jet bulk velocity structures in a unification of the BLO and FR I radio galaxies (FRI). By calculating the synchrotron spectra and SSC spectra of BL Lac object jets with continually bulk velocity structures, we have found that the spectra are much different from those in jets with a uniform velocity structure under increasing viewing angles. The unification of BLO and FRI is less constrained by the viewing angles, and would be imprinted by velocity structures intrinsic to the jets, themselves. By considering jets with bulk velocity structures constrained by the apparent speed, we discuss the velocity structures imprinted on the observed spectra for different viewing angles. We find that the spectra are greatly impacted by longitudinal velocity structures, because the volume elements are compressed or expanded. Finally, we present the EC spectra of FSRQs and FR II radio galaxies (FRII), and find that they are weakly affected by the velocity structures compared to synchrotron and SSC spectra.

资助项目National Natural Science Foundation of China [10673028] ; National Natural Science Foundation of China [10778702] ; National Natural Science Foundation of China [10803018] ; National Basic Research Program of China [2009CB824800] ; National Aeronautics and Space Administration
项目资助者National Natural Science Foundation of China [10673028, 10778702, 10803018] ; National Basic Research Program of China [2009CB824800] ; National Aeronautics and Space Administration
语种英语
学科领域天文学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
ISSN0004-6264
URL查看原文
归档日期2009-12-28
WOS记录号WOS:000271364100022
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL LACERTAE OBJECTS ; ACTIVE GALACTIC NUCLEI ; GAMMA-RAY EMISSION ; TEV BLAZARS ; X-RAY ; EXTRAGALACTIC JETS ; RELATIVISTIC JETS ; UNIFIED SCHEMES ; RADIO GALAXIES ; LAC OBJECTS
EI入藏号20215111360603
EI主题词Galaxies
EI分类号932.1.1 Particle Accelerators
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/4991
专题高能天体物理研究组
通讯作者Yang JP(杨建平)
作者单位1.ational Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China, Kunming 650011, China
2.Graduate School of the Chinese Academy of Sciences, China
3.Yunnan Agricultural University, Kunming 650201, China
4.Department of Physics, Yunnan University, Kunming 650091, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Yang JP,Wang JC,Dai, BZ,et al. Implications of Bulk Velocity Structures in AGN Jets[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2009,61(5):1153-1163.
APA Yang JP,Wang JC,Dai, BZ,&Gao XY.(2009).Implications of Bulk Velocity Structures in AGN Jets.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,61(5),1153-1163.
MLA Yang JP,et al."Implications of Bulk Velocity Structures in AGN Jets".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 61.5(2009):1153-1163.
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