Optical and Gamma-Ray Variability Behaviors of 3C 454.3 from 2006 to 2011

doi:10.3847/1538-4357/aab09d

	Optical and Gamma-Ray Variability Behaviors of 3C 454.3 from 2006 to 2011
	Fan,Xu-Liang 1; Li,Shao-Kun 2,3; Liao,Neng-Hui 4; Chen,Liang 5,6; Liu,Hong-Tao 2,3; Lu,Kai-Xing 2,3; Yan,Da-Hai 2,3; Zhang,Rui-Yu 5,6; Guo,Qian 2,3,6; Wu,Qingwen 1
刊名	The Astrophysical Journal
	2018-03-27
卷号	856 期号:1
关键词	galaxies: jets quasars: individual (3C 454.3)
ISSN号	0004-637X
DOI	10.3847/1538-4357/aab09d
英文摘要	Abstract We present our photometric monitoring of a flat spectrum radio quasar 3C 454.3 at Yunnan observatories from 2006 to 2011. We find that the optical color of 3C 454.3 shows an obvious redder-when-brighter trend, which reaches a saturation stage when the source is brighter than 15.15 mag at V band. We perform a simulation with multiple values of disk luminosity and spectral index to reproduce the magnitude–color diagram. The results show that the contamination caused by the disk radiation alone is difficult to produce the observed color variability. The variability properties during the outburst in 2009 December are also compared with γ-ray data derived from the Fermi γ-ray space telescope. The flux variation of these two bands follows a linear relation with , which provides observational evidence for the external Compton process in 3C 454.3. Meanwhile, this flux correlation indicates that electron injection is the main mechanism for the variability origin. We also explore the variation of the flux ratio Fγ/FR and the detailed structures in the light curves, and discuss some possible origins for the detailed variability behaviors.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-856-1-AAB09D
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/19968]
专题	中国科学院紫金山天文台
作者单位	1.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China; fanxl@hust.edu.cn, qwwu@hust.edu.cn 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China; baijinming@ynao.ac.cn 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China 4.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China 5.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China 6.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
推荐引用方式 GB/T 7714	Fan,Xu-Liang,Li,Shao-Kun,Liao,Neng-Hui,et al. Optical and Gamma-Ray Variability Behaviors of 3C 454.3 from 2006 to 2011[J]. The Astrophysical Journal,2018,856(1).
APA	Fan,Xu-Liang.,Li,Shao-Kun.,Liao,Neng-Hui.,Chen,Liang.,Liu,Hong-Tao.,...&Bai,Jin-Ming.(2018).Optical and Gamma-Ray Variability Behaviors of 3C 454.3 from 2006 to 2011.The Astrophysical Journal,856(1).
MLA	Fan,Xu-Liang,et al."Optical and Gamma-Ray Variability Behaviors of 3C 454.3 from 2006 to 2011".The Astrophysical Journal 856.1(2018).