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A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?
Zhang, Peng-Fei1,2; Yan, Da-Hai3,4,5; Zhou, Jia-Neng6; Fan, Yi-Zhong1; Wang, Jian-Cheng3,4,5; Zhang, Li2
2017-08-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume845Issue:1Pages:8
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.

KeywordBL Lacertae objects: individual (PKS 0301-243) galaxies: jets gamma-rays: galaxies gamma-rays: general
DOI10.3847/1538-4357/aa7ecd
WOS KeywordBL LACERTAE OBJECTS ; SAMPLED TIME-SERIES ; PHYSICAL-PROPERTIES ; FERMI BLAZARS ; SPACED DATA ; VARIABILITY ; OSCILLATION ; CURVE ; JETS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000407627500007
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22704
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Peng-Fei
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Yunnan Univ, Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Yunnan, Peoples R China
3.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
4.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
5.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
6.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Peng-Fei,Yan, Da-Hai,Zhou, Jia-Neng,et al. A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?[J]. ASTROPHYSICAL JOURNAL,2017,845(1):8.
APA Zhang, Peng-Fei,Yan, Da-Hai,Zhou, Jia-Neng,Fan, Yi-Zhong,Wang, Jian-Cheng,&Zhang, Li.(2017).A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?.ASTROPHYSICAL JOURNAL,845(1),8.
MLA Zhang, Peng-Fei,et al."A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?".ASTROPHYSICAL JOURNAL 845.1(2017):8.
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