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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; Zhang, Peng-fei(Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-06-10
卷号842期号:1
DOI10.3847/1538-4357/aa7465
产权排序第3完成单位
收录类别SCI
关键词Galaxies: Jets Gamma Rays: Galaxies Radiation Mechanisms: Non-thermal
摘要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.
项目资助者973 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
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:000402877900005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL LACERTAE OBJECTS ; LARGE-AREA TELESCOPE ; LAC OBJECTS ; PHYSICAL-PROPERTIES ; FERMI BLAZARS ; TIME-SERIES ; SPACED DATA ; OSCILLATIONS ; MODEL ; JETS
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被引频次:7[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/114a53/10090
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, Key Lab Dark Matter & Space Astron, Purple Mt Observ, 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
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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.,...&Zhang, Peng-fei.(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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