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Multicolor Optical Monitoring of the BL Lacertae Object S5 0716+714 during the 2012 Outburst
Hong SW(洪禅伟)1,2,3; Xiong DR(熊定荣)1,4,5; Bai JM(白金明)1,4,5; Xiong, Dingrong(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Guandu Dist 650216, Kunming, Peoples R China)
发表期刊ASTRONOMICAL JOURNAL
2017-07-01
卷号154期号:1
DOI10.3847/1538-3881/aa799a
产权排序第1完成单位
收录类别SCI
关键词Bl Lacertae Objects: Individual (S5 0716+714) Galaxies: Active Galaxies: Photometry
摘要We monitored the BL Lacertae object S5 0716+714 in the optical bands during 2012 January and February with long time spans on intraday timescales (>5 hr) and high time resolutions. During this monitoring period, the object shows violent flaring activity in both short and intraday timescales. The object has a high duty cycle. The light curves detected as intraday variability show variability of various shapes. The variability amplitude is from 12.81% to 33.22%, and the average value is 19.92% +/- 5.87%. The overall magnitude variabilities are Delta B = 1(m).24, Delta V = 1(m).42, Delta R = 1(m).3, and Delta I = 1(m).23. During the observations, the average change rate is CR = 0.035 +/- 0.009 Mag/h during the ascent and CR = 0.035 +/- 0.014 Mag/h during the descent. However, different cases are found on certain nights. There are good interband correlations but no significant time lags for intraday and short timescales. The results of the autocorrelation function show that the variability timescales range from 0.054 to 0.134 day. Most nights show a bluer-when-brighter (BWB) chromatic trend, a weak redder-when-brighter (RWB) trend is found, and a few nights show no correlation between magnitude and color index. The BWB trend appears in short timescales. During the flare, the spectral index exhibits a clockwise loop for internights. A shock-in-jet model and the shock wave propagating along a helical path are likely to explain the variability and color index variability.
项目资助者Chinese Academy of Sciences ; People's Government of Yunnan Province ; National Nature Science Foundation of China(11433004, 11133006, 11673057, 11361140347) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-M06) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; Chinese Western Young Scholars Program ; Light of West China Program by CAS(Y7XB018001, Y5XB091001) ; science and technology project for youth of Yunnan of China(2104FD059)
语种英语
学科领域天文学
文章类型Article
ISSN0004-6256
URL查看原文
WOS记录号WOS:000405069800007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALACTIC NUCLEI ; HIGH TEMPORAL RESOLUTION ; INTRADAY VARIABILITY ; 3C 273 ; X-RAY ; RAPID VARIABILITY ; LIGHT CURVES ; LAC OBJECTS ; BLAZAR JETS ; MICROVARIABILITY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11373
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Xiong, Dingrong(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Guandu Dist 650216, Kunming, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Department of Mathematics and Computer Science, Lijiang Teachers College, Lijiang 674199, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
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Hong SW,Xiong DR,Bai JM,et al. Multicolor Optical Monitoring of the BL Lacertae Object S5 0716+714 during the 2012 Outburst[J]. ASTRONOMICAL JOURNAL,2017,154(1).
APA Hong SW,Xiong DR,Bai JM,&Xiong, Dingrong.(2017).Multicolor Optical Monitoring of the BL Lacertae Object S5 0716+714 during the 2012 Outburst.ASTRONOMICAL JOURNAL,154(1).
MLA Hong SW,et al."Multicolor Optical Monitoring of the BL Lacertae Object S5 0716+714 during the 2012 Outburst".ASTRONOMICAL JOURNAL 154.1(2017).
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