The photometric monitoring of γ-ray-loud narrow-line Seyfert 1 galaxy 1H0323+342 from 2006 to 2010  

作　　者：Fang Wang Ding-Rong Xiong Jin-Ming Bai Shao-Kun Li Jian-Guo Wang 

机构地区：[1]Yunnan Observatories,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Key Laboratory for the Structure and Evolution of Celestial Objects,Chinese Academy of Sciences [4]Center for Astronomical Mega-Science,Chinese Academy of Sciences

出　　处：《Research in Astronomy and Astrophysics》2017年第7期47-56,共10页天文和天体物理学研究（英文版）

基　　金：provided by the National Key Program for Science and Technology Research and Development (Grant 2016YFA0400701);the Key Research Program of the CAS (Grant No. KJZD-EW-M06);the National Natural Science Foundation of China (NSFC, Grant Nos. 11133006, 11433004 and 11303085);the Western Light Youth Project;support from Chinese Western Young Scholars Program;‘Light of West China’ Program provided by CAS

摘　　要：1H 0323＋342 is a γ-ray-loud narrow-line Seyfert 1 galaxy（NLS1）. The variability mechanism of γ-ray-loud NLS1 s remains unclear. We have observed 1H 0323＋342 photometrically from 2006 to2010 with a total of 41 nights of observations in order to constrain the variability mechanism. Intraday variabilities（IDVs） are detected on four nights. When considering the nights with time spans 〉 2 hours,the duty cycle is 28.3%. The average variability amplitude is 10.8% for IDVs and possibly variable nights. In the color-magnitude diagram, there are bluer-when-brighter chromatic trends for intraday and long-term timescales, which could be explained by the shock-in-jet model, and also could possibly be due to two distinct components or an accretion disk model.1H 0323＋342 is a γ-ray-loud narrow-line Seyfert 1 galaxy（NLS1）. The variability mechanism of γ-ray-loud NLS1 s remains unclear. We have observed 1H 0323＋342 photometrically from 2006 to2010 with a total of 41 nights of observations in order to constrain the variability mechanism. Intraday variabilities（IDVs） are detected on four nights. When considering the nights with time spans 〉 2 hours,the duty cycle is 28.3%. The average variability amplitude is 10.8% for IDVs and possibly variable nights. In the color-magnitude diagram, there are bluer-when-brighter chromatic trends for intraday and long-term timescales, which could be explained by the shock-in-jet model, and also could possibly be due to two distinct components or an accretion disk model.

关 键 词：GALAXIES active - galaxies individual （1H 0323＋342）- galaxies jets 

分 类 号：P152[天文地球—天文学]