The line emissions and polarization in blazars  

作　　者：YANG JiangHe 1,2 ,FAN JunHui 2,3 & YANG RuShu 1 1 Department of Physics and Electronics Science,Hunan University of Arts and Science,Changde 415000,China 2 Center for Astrophysics,Guangzhou University,Guangzhou 510405,China 3 Key Laboratory of Astronomy Observation and Technology,Guangzhou University,Guangzhou 510405,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第6期1162-1168,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：was partially supported by the National Natural Science Foundation of China (Grant Nos. 10573005 and 10633010);the National Basic Research Program of China (Grant No. 2007CB815405);the Fund of the 11th Five-year Plan for Key Construction Academic Subject (Optics) of Hunan Province

摘　　要：The correlations between broad-line emission,polarization,and core-dominance parameters are investigated for a sample of 148 blazars(BL Lacertae objects-BLs and flat spectrum radio quasars-FSRQs). An anti-correlation between the broad-line luminosity and the linear polarization is found. The broad-line and polarization relation can be explained by using a relativistic beaming model,which perhaps suggests that BL Lacs and FSRQs are a single class. We also investigated the relation between the ratio of the broad-line luminosity to the Eddington luminosity and linear polarization,and that between the ratio of the broad-line luminosity to the Eddington luminosity and the core-dominance parameter.The correlations between broad-line emission,polarization,and core-dominance parameters are investigated for a sample of 148 blazars(BL Lacertae objects-BLs and flat spectrum radio quasars-FSRQs). An anti-correlation between the broad-line luminosity and the linear polarization is found. The broad-line and polarization relation can be explained by using a relativistic beaming model,which perhaps suggests that BL Lacs and FSRQs are a single class. We also investigated the relation between the ratio of the broad-line luminosity to the Eddington luminosity and linear polarization,and that between the ratio of the broad-line luminosity to the Eddington luminosity and the core-dominance parameter.

关 键 词：blazars(BL Lacs and FSRQs) EMISSION LINE POLARIZATION jets 

分 类 号：P172.4[天文地球—天文学]