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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
Source PublicationASTROPHYSICAL JOURNAL
2017-08-10
Volume845Issue:1
DOI10.3847/1538-4357/aa7ecd
Contribution Rank第3完成单位
Indexed BySCI
KeywordBl Lacertae Objects: Individual (Pks 0301-243) Galaxies: Jets Gamma-rays: Galaxies Gamma-rays: General
Abstract

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.

Funding Project973 Program of China[2013CB837000] ; National Natural Science Foundation of China[NSFC-11433004] ; National Natural Science Foundation of China[NSFC-11525313] ; National Natural Science Foundation of China[NSFC-11573060] ; National Natural Science Foundation of China[NSFC-11573026] ; National Natural Science Foundation of China[NSFC-11661161010] ; Key Laboratory of Astroparticle Physics of Yunnan Province[2016DG006] ; CAS "Light of West China" Program
Funding Organization973 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
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000407627500007
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBL LACERTAE OBJECTS ; SAMPLED TIME-SERIES ; PHYSICAL-PROPERTIES ; FERMI BLAZARS ; SPACED DATA ; VARIABILITY ; OSCILLATION ; CURVE ; JETS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/11926
Collection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
Corresponding AuthorZhang, Peng-Fei
Affiliation1.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
Recommended Citation
GB/T 7714
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, Li.(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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