A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?

doi:10.3847/1538-4357/aa7ecd

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	A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?
	Zhang, Peng-Fei 3,4; Yan, Da-Hai 1,2,5; Zhou, Jia-Neng 6; Fan, Yi-Zhong 4; Wang, Jian-Cheng 1,2,5; Zhang, Li 3
刊名	ASTROPHYSICAL JOURNAL
	2017-08-10
卷号	845 期号:1
关键词	Bl Lacertae Objects: Individual (Pks 0301-243) Galaxies: Jets Gamma-rays: Galaxies Gamma-rays: General
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa7ecd
英文摘要	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.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000407627500007
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32561]
专题	中国科学院上海天文台
通讯作者	Zhang, Peng-Fei
作者单位	1.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China 2.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 3.Yunnan Univ, Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Yunnan, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 5.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 6.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
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).
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).
MLA	Zhang, Peng-Fei,et al."A gamma-ray Quasi-periodic Modulation in the Blazar PKS 0301-243?".ASTROPHYSICAL JOURNAL 845.1(2017).