摘要
In this paper, we revisit the relationship between the spectral index and the core-dominance parameter using a larger sample of 157 blazars (23 BL Lacertae objects and 134 flat spectrum radio quasars), compiled from the available literature. From the relevant data, we find the spectral index associated with the core-dominance parameter, for which a relativistic beaming effect is responsible. In addition, we make a comparison of the properties between BL Lacertae objects and flat spectrum radio quasars.
In this paper, we revisit the relationship between the spectral index and the core-dominance parameter using a larger sample of 157 blazars （23 BL Lacertae objects and 134 flat spectrum radio quasars）, compiled from the available literature. From the relevant data, we find the spectral index associated with the core-dominance parameter, for which a relativistic beaming effect is responsible. In addition, we make a comparison of the properties between BL Lacertae objects and flat spectrum radio quasars.
基金
supported by the National Natural Science Foundation of China (Grant Nos.10633010 and 11173009)
the National Basic Research Program of China (Grant No.2007CB815405)
the Bureau of Education of Guangzhou Municipality (Grant No.11 Sui-Jiao-Ke [2009])
Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme-GDUPS (2009)
the Yangcheng Scholar Funded Scheme (Grant No.10A027S)
