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Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380
Zhang, Peng-fei1,2; Yan DH(闫大海)3,4,5; Liao, Neng-hui1; Zeng, Wei2; Wang JC(王建成)3,4,5; Cao, Li-jia2
Source PublicationASTROPHYSICAL JOURNAL
2017-06-10
Volume842Issue:1
DOI10.3847/1538-4357/aa7465
Contribution Rank第3完成单位
Indexed BySCI
KeywordGalaxies: Jets Gamma Rays: Galaxies Radiation Mechanisms: Non-thermal
Abstract

We search for gamma-ray and optical periodic modulations in distant flat-spectrum radio quasar (FSRQ) PKS 0426-380 (the redshift z = 1.1). Using two techniques (i. e., the maximum likelihood optimization and the exposure-weighted aperture photometry), we obtain gamma-ray light curves from Fermi-LAT Pass 8 data covering from 2008 August to 2016 December. We then analyze the light curves with the Lomb-Scargle periodogram and the weighted wavelet Z-transform. A gamma-ray quasi-periodicity with a period of 3.35 +/- 0.68 yr is found at the significance level of. 3.6 s. The optical-UV flux covering from 2005 August to 2013 April provided by the ASI Science Data Center is also analyzed, but no significant quasi-periodicity is found. It should be pointed out that the result of the optical-UV data could be tentative because of the incompleteness of the data. Further long-term multiwavelength monitoring of this FSRQ is needed to confirm its quasi-periodicity.

Funding Project973 Program of China[2013CB837000] ; National Natural Science Foundation of China[NSFC-11573060] ; National Natural Science Foundation of China[NSFC-11573026] ; 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-11573060, NSFC-11573026] ; Key Laboratory of Astroparticle Physics of Yunnan Province[2016DG006] ; CAS "Light of West China" Program
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:000402877900005
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBL LACERTAE OBJECTS ; LARGE-AREA TELESCOPE ; LAC OBJECTS ; PHYSICAL-PROPERTIES ; FERMI BLAZARS ; TIME-SERIES ; SPACED DATA ; OSCILLATIONS ; MODEL ; JETS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10090
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
Recommended Citation
GB/T 7714
Zhang, Peng-fei,Yan DH,Liao, Neng-hui,et al. Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380[J]. ASTROPHYSICAL JOURNAL,2017,842(1).
APA Zhang, Peng-fei,Yan DH,Liao, Neng-hui,Zeng, Wei,Wang JC,&Cao, Li-jia.(2017).Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380.ASTROPHYSICAL JOURNAL,842(1).
MLA Zhang, Peng-fei,et al."Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380".ASTROPHYSICAL JOURNAL 842.1(2017).
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