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A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?
Zhang, Peng-Fei1,2; Yan DH(闫大海)3,4,5; Zhou, Jia-Neng6; Fan, Yi-Zhong1; Wang JC(王建成)3,4,5; Zhang, Li2; Zhang, Peng-Fei(Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-08-10
卷号845期号:1
DOI10.3847/1538-4357/aa7ecd
产权排序第3完成单位
收录类别SCI
关键词Bl Lacertae Objects: Individual (Pks 0301-243) Galaxies: Jets Gamma-rays: Galaxies Gamma-rays: General
摘要We report a nominally high-confidence gamma-ray quasi-periodic modulation in the blazar PKS 0301-243. For this target, we analyze its Fermi-LAT Pass 8 data from 2008 August to 2017 May. Two techniques, i.e., maximum likelihood optimization and exposure-weighted aperture photometry, are used to build the gamma-ray light curves. Then, both the Lomb-Scargle periodogram and the weighted wavelet Z-transform are applied to the light curves to search for period signals. A quasi-periodicity with a period of 2.1 +/- 0.3 yr appears at the significance level of similar to 5 sigma, although it should be noted that this putative quasi-period variability is seen in a data set that is barely four times longer. We speculate that this gamma-ray quasi-periodic modulation may be evidence of a binary supermassive black hole.
项目资助者973 Program of China(2013CB837000) ; National Natural Science Foundation of China(NSFC-11433004, NSFC-11525313, NSFC-11573060, NSFC-11573026, NSFC-11661161010) ; Key Laboratory of Astroparticle Physics of Yunnan Province(2016DG006) ; CAS "Light of West China" Program
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000407627500007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL LACERTAE OBJECTS ; SAMPLED TIME-SERIES ; PHYSICAL-PROPERTIES ; FERMI BLAZARS ; SPACED DATA ; VARIABILITY ; OSCILLATION ; CURVE ; JETS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11926
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Zhang, Peng-Fei(Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China)
作者单位1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
2.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China
3.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
6.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
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Zhang, Peng-Fei,Yan DH,Zhou, Jia-Neng,et al. A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?[J]. ASTROPHYSICAL JOURNAL,2017,845(1).
APA Zhang, Peng-Fei.,Yan DH.,Zhou, Jia-Neng.,Fan, Yi-Zhong.,Wang JC.,...&Zhang, Peng-Fei.(2017).A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?.ASTROPHYSICAL JOURNAL,845(1).
MLA Zhang, Peng-Fei,et al."A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?".ASTROPHYSICAL JOURNAL 845.1(2017).
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