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Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data
Zhang, Peng-fei1,2; Yan DH(闫大海)3,4,5; Liao, Neng-hui1; Wang JC(王建成)3,4,5
Source PublicationASTROPHYSICAL JOURNAL
2017-02-01
Volume835Issue:2
DOI10.3847/1538-4357/835/2/260
Contribution Rank第3完成单位
Indexed BySCI
KeywordBl Lacertae Objects: Individual (Pks 2155-304) Galaxies: Jets Gamma-rays: Galaxies Gamma-rays: General
Abstract

We examine the gamma-ray quasi-periodic variability of PKS 2155-304 with the latest publicly available Fermi-LAT Pass 8 data, which covers the years from 2008 August to 2016 October. We produce the light curves in two ways: the exposure-weighted aperture photometry and the maximum likelihood optimization. The light curves are then analyzed by using Lomb-Scargle Periodogram (LSP) and Weighted Wavelet Z-transform, and the results reveal a significant quasi-periodicity with a period of 1.74. +/- 0.13 years and a significance of similar to 4.9 sigma. The constraint of multifrequencies quasi-periodic variabilities on blazar emission model is discussed.

Funding Project973 Program of China[2013CB837000] ; National Natural Science Foundation of China[11573060] ; Key Laboratory of Astroparticle Physics of Yunnan Province[2016DG006] ; Strategic Priority Research Program ; Emergence of Cosmological Structure of the Chinese Academy of Sciences[XDB09000000] ; CAS "Light of West China" Program
Funding Organization973 Program of China[2013CB837000] ; National Natural Science Foundation of China[11573060] ; Key Laboratory of Astroparticle Physics of Yunnan Province[2016DG006] ; Strategic Priority Research Program ; Emergence of Cosmological Structure of the Chinese Academy of Sciences[XDB09000000] ; 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:000401155400006
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; BL LACERTAE OBJECTS ; TIME-SERIES ; SPACED DATA ; OSCILLATIONS ; VARIABILITY ; CURVE
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10065
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. Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data[J]. ASTROPHYSICAL JOURNAL,2017,835(2).
APA Zhang, Peng-fei,Yan DH,Liao, Neng-hui,&Wang JC.(2017).Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data.ASTROPHYSICAL JOURNAL,835(2).
MLA Zhang, Peng-fei,et al."Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data".ASTROPHYSICAL JOURNAL 835.2(2017).
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