SIX-YEAR OPTICAL MONITORING OF THE BL LACERTAE OBJECT 1ES 0806+52.4

	SIX-YEAR OPTICAL MONITORING OF THE BL LACERTAE OBJECT 1ES 0806+52.4
	Man, Zhongyi 1; Zhang, Xiaoyuan 1; Wu, Jianghua 1; Zhou, Xu2 ; Yuan, Qirong 3,4
刊名	ASTRONOMICAL JOURNAL
	2014-12-01
卷号	148 期号:6
关键词	BL Lacertae objects: individual (1ES 0806+524) galaxies: active galaxies: photometry
英文摘要	We present the results of the first systematic long-term multicolor optical monitoring of the BL Lacertae object 1ES 0806+52.4. The monitoring was performed in multiple passbands with a 60/90 cm Schmidt telescope from 2005 December to 2011 February. The overall brightness of this object decreased from 2005 December to 2008 December but was regained after that. A sharp outburst probably occurred around the end of our monitoring program. Overlapping the long-term trend are some short-term small-amplitude oscillations. No intranight variability was found in the object, which is in accordance with the historical observations before 2005. By investigating the color behavior, we found a strong bluer-when-brighter chromatism for the long-term variability of 1ES 0806+52.4. The total amplitudes at the c, i, and o bands are 1.18, 1.12, and 1.02 mag, respectively. The amplitudes tend to increase toward shorter wavelengths, which may be a major cause of the bluer-when-brighter chromatism. Such bluer-when-brighter chromatisms are also found in other blazars, such as S5 0716+714, OJ 287. The hard-X-ray data collected from the Swift/BAT archive was correlated with our optical data. No positive result was found, the reason for which may be that the hard-X-ray flux is a combination of the synchrotron and inverse Compton emission, but with different timescales and cadences under the leptonic synchrotron self-Compton model.
收录类别	SCI
语种	英语
WOS记录号	WOS:000345223200007
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6422]
专题	国家天文台_光学天文研究部
作者单位	1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 3.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China 4.Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210046, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Man, Zhongyi,Zhang, Xiaoyuan,Wu, Jianghua,et al. SIX-YEAR OPTICAL MONITORING OF THE BL LACERTAE OBJECT 1ES 0806+52.4[J]. ASTRONOMICAL JOURNAL,2014,148(6).
APA	Man, Zhongyi,Zhang, Xiaoyuan,Wu, Jianghua,Zhou, Xu,&Yuan, Qirong.(2014).SIX-YEAR OPTICAL MONITORING OF THE BL LACERTAE OBJECT 1ES 0806+52.4.ASTRONOMICAL JOURNAL,148(6).
MLA	Man, Zhongyi,et al."SIX-YEAR OPTICAL MONITORING OF THE BL LACERTAE OBJECT 1ES 0806+52.4".ASTRONOMICAL JOURNAL 148.6(2014).