Statistics of Superluminal Motion in Active Galactic Nuclei  

作　　者：Yong-Wei Zhang Jun-Hui Fan 

机构地区：[1]Center for Astrophysics, Guangzhou University, Guangzhou 510006, China

出　　处：《Chinese Journal of Astronomy and Astrophysics》2008年第4期385-394,共10页中国天文和天体物理学报（英文版）

基　　金：the NSFC(Grants 10573005 and 10633010);the 973 project(2007CB815405)

摘　　要：We have collected an up-to-date sample of 123 superluminal sources （84 quasars, 27 BL Lac objects and 12 galaxies） and calculated the apparent velocities （βapp） for 224 components in the sources with the A-CDM model. We checked the relationships between their proper motions, redshifts,βapp and 5 GHz flux densities. Our analysis shows that the radio emission is strongly boosted by the Doppler effect. The superluminal motion and the relativistic beaming boosting effect are, to some extent, the same in active galactic nuclei.We have collected an up-to-date sample of 123 superluminal sources （84 quasars, 27 BL Lac objects and 12 galaxies） and calculated the apparent velocities （βapp） for 224 components in the sources with the A-CDM model. We checked the relationships between their proper motions, redshifts,βapp and 5 GHz flux densities. Our analysis shows that the radio emission is strongly boosted by the Doppler effect. The superluminal motion and the relativistic beaming boosting effect are, to some extent, the same in active galactic nuclei.

关 键 词：GALAXIES jets - galaxies general - BL Lacertae objects active - quasars data analysis 

分 类 号：P171[天文地球—天文学]