Spectral Index and Core-Dominance Parameter in Blazars
Spectral Index and Core-Dominance Parameter in Blazars
复制标题
耀变体中的光谱指数和核心优势参数
DOI:
10.1093/pasj/62.2.211
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发表时间:
2010-04
影响因子:
2.3
通讯作者:
Liu, Yi
中科院分区:
文献类型:
--
作者:
Tao, Jun;Fan, Jun-Hui;Huang, Yong;Yang, Jiang-He;Liu, Yi
In this paper, we discuss the relationship between the spectral index and the core-dominance parameter for blazars (BL Lacertae objects and flat spectrum radio quasars). To do so, we calculated the spectral indexes for 38 BL Lacertae objects using the preliminary data of the University of Michigan Radio Astronomy Observatory (UMRAO) with those for flat spectrum radio quasars from our previous paper (2008. PASJ, 60, 707). For the core-dominance parameters, we mainly calculated them from the flux densities given by Kovalev et al. (2005. AJ, 130, 2473). We have compiled a list of core-dominance parameters for some sources from the available literature. In this sense, we obtained a sample of 119 blazars (38 BL Lacertae objects and 81 flat spectrum radio quasars). From the relevant data, we found that the spectral index is associated with the core-dominance parameter, and tried to explain this association using a relativistic beaming model. In addition, we made a comparison of the properties of BL Lacertae objects and flat spectrum radio quasars. We concluded that the association between spectral index and core-dominance parameter is perhaps due to a relativistic beaming effect.
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DOI:
10.1113/jphysiol.1996.sp021577
发表时间:
1996-08
期刊:
The Journal of Physiology
影响因子:
--
作者:
J. Wagner;B. Alger
通讯作者:
J. Wagner;B. Alger
DOI:
10.1086/497163
发表时间:
2005-12
期刊:
The Astronomical Journal
影响因子:
--
作者:
G. Xie;H. T. Liu;G. Cha;S. Zhou;L. Ma;Z. Xie;L. E. Chen
通讯作者:
G. Xie;H. T. Liu;G. Cha;S. Zhou;L. Ma;Z. Xie;L. E. Chen
影响因子:
2.3
作者:
Huang, Yong;Tao, Jun;Guo, Qian;Gupta, Alok G.;Yuan, Yu-Hai;Liu, Yi;Su, Jiang-Bo;Zhang, Jiang-Shui;Wang, Hong-Guang;Liu, Hua;Romero, Gustavo E.;Zhang, Yong-Wei;Hua, Tong-Xu;Fan, Jun-Hui;Zhang, Jing-Yi
通讯作者:
Zhang, Jing-Yi
DOI:
10.1086/174038
发表时间:
1994-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Readhead
通讯作者:
A. Readhead
DOI:
10.1086/174226
发表时间:
1994-06
期刊:
The Astrophysical Journal
影响因子:
--
作者:
B. Jannuzi;Paul S. Smith;R. Elston
通讯作者:
B. Jannuzi;Paul S. Smith;R. Elston