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A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?
Zhang, Peng-Fei; Yan, Da-Hai; Zhou, Jia-Neng; Fan, Yi-Zhong; Wang, Jian-Cheng; Zhang, Li
2017
发表期刊ASTROPHYSICAL JOURNAL
卷号845期号:1页码:82-
摘要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.
语种英语
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/17336
专题暗物质和空间天文实验室
推荐引用方式
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):82-.
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),82-.
MLA Zhang, Peng-Fei,et al."A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?".ASTROPHYSICAL JOURNAL 845.1(2017):82-.
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