The Relationship between Radio Luminosity and Core-Dominance Parameter for XBLs

Journal of astrophysics and astronomy

Fei-Peng Pi3⁴  Yong-Xiang Wang²  Jiang-He Yang¹  Y. Liu2³ 

[1]Department of Physics and Electronics Science, Hunan University of Arts and Science, China.$$

[2]Guangzhou Vocational College of Technology & Business, Guangzhou, China.$$

[3]Center for Astrophysics, Guangzhou University, Guangzhou 510006, China.$$

[4]Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China.$$

关键词: Galaxies;    BL Lacertae objects;    general: galaxies;    fundamental parameters: galaxies;    jet.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

In this work, we investigate the correlation between the luminosity and the core-dominance parameter for a sample of X-ray selected BL Lacertae objects (XBLs), and found that the extended luminosity is strongly anti-correlated with the core-dominance parameter while the core (or the total) luminosity is not correlated with the core-dominance parameter. If this is the case, then we can expect that the lower extended luminosity XBLs and their core luminosity is relatively higher. This can be explained by a relativistic beaming model since in this case, the viewing angle is smaller and the emissions dominate the extended emissions. Therefore, the anti-correlation is in fact the result of the relativistic beaming model.

【 授权许可】

Unknown