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The Relationship between Radio Luminosity and Core-Dominance Parameter for XBLs |
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| Authors: | Yong-Xiang Wang Y Liu Fei-Peng Pi Jiang-He Yang |
| Institution: | 1. Guangzhou Vocational College of Technology & Business, Guangzhou, China 2. Center for Astrophysics, Guangzhou University, Guangzhou, 510006, China 3. Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou, 510006, China 4. School of Physics and Electronic Engineering, Guangzhou University, Guangzhou, China 5. Department of Physics and Electronics Science, Hunan University of Arts and Science, Changde, China |
| Abstract: | 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. |
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