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Quasi-simultaneous Spectroscopic and Multiband Photometric Observations of Blazar S5 0716+714 During 2018-2019
Feng HC(封海成)1,2,3; Liu HT(刘洪涛)1,3,4; Bai JM(白金明)1,3,4; Xing LF(邢丽峰)1,3,4; Li, Y. B.1,2,3; Xiao, M.5; Xin YX(辛玉新)1,2,3,4
发表期刊ASTROPHYSICAL JOURNAL
2020
卷号888期号:1页码:13
DOI10.3847/1538-4357/ab594b
产权排序第1完成单位
收录类别SCI
关键词BL Lacertae objects Active galaxies Blazars Galaxy photometry Spectroscopy
摘要

In order to study short timescale optical variability of gamma-ray blazar S5 0716+714, quasi-simultaneous spectroscopic and multiband photometric observations were performed from 2018 November to 2019 March with the 2.4 m optical telescope located at Lijiang Observatory of Yunnan Observatories. The observed spectra are well fitted with a power law F-lambda = A lambda(-alpha) (spectral index alpha > 0). Correlations found between (alpha)over dot, (A)over dot, (A)over dot/A, (F)over dot(lambda), and (F)over dot(lambda)/F-lambda, and are consistent with the trend of bluer-when-brighter (BWB). It is the same case for colors, magnitudes, color variation rates, and magnitude variation rates of photometric observations. The variations of alpha lead those of F-lambda. Also, the color variations lead magnitude variations. The observational data are mostly distributed in the I(+,+) and III(-,-) quadrants of the coordinate system. Both spectroscopic and photometric observations show BWB behaviors in S5 0716+714. The observed BWB may be explained by the shock-jet model, and its appearance may depend on the relative position of the observational frequency ranges with respect to the synchrotron peak frequencies, e.g., at the left of the peak frequencies. Fractional variability amplitudes are F-var similar to 40% for both spectroscopic and photometric observations. Variations of alpha indicate variations of relativistic electron distribution producing the optical spectra.

资助项目Key Research Program of the Chinese Academy of Sciences (CAS)[KJZD-EW-M06] ; National Natural Science Foundation of China (NSFC)[11433004] ; Ministry of Science and Technology of China[2016YFA0400700] ; NSFC[11273052] ; NSFC[11573067] ; NSFC[U1831125] ; NSFC[U1331118] ; CAS[U1831125] ; CAS[U1331118] ; CAS Interdisciplinary Innovation Team ; People's Government of Yunnan Province
项目资助者Key Research Program of the Chinese Academy of Sciences (CAS)[KJZD-EW-M06, 11433004, 2016YFA0400700] ; NSFC[11273052] ; NSFC[11573067] ; NSFC[U1831125] ; NSFC[U1331118] ; CAS[U1831125] ; CAS[U1331118] ; CAS Interdisciplinary Innovation Team ; People's Government of Yunnan Province
语种英语
学科领域天文学 ; 星系与宇宙学 ; 星系天文学
学科门类理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000519138600001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SUPERMASSIVE BLACK-HOLES ; ACTIVE GALACTIC NUCLEI ; RAY LIGHT CURVES ; BL-LAC OBJECTS ; OPTICAL VARIABILITY ; INTRADAY VARIABILITY ; MASSES ; GALAXY ; SIZE
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/22525
专题南方基地
中国科学院天体结构与演化重点实验室
通讯作者Feng HC(封海成)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, Yunnan, People's Republic of China
2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3..Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, Yunnan, People's Republic of China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
5.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, People's Republic of China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Feng HC,Liu HT,Bai JM,et al. Quasi-simultaneous Spectroscopic and Multiband Photometric Observations of Blazar S5 0716+714 During 2018-2019[J]. ASTROPHYSICAL JOURNAL,2020,888(1):13.
APA Feng HC.,Liu HT.,Bai JM.,Xing LF.,Li, Y. B..,...&Xin YX.(2020).Quasi-simultaneous Spectroscopic and Multiband Photometric Observations of Blazar S5 0716+714 During 2018-2019.ASTROPHYSICAL JOURNAL,888(1),13.
MLA Feng HC,et al."Quasi-simultaneous Spectroscopic and Multiband Photometric Observations of Blazar S5 0716+714 During 2018-2019".ASTROPHYSICAL JOURNAL 888.1(2020):13.
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