A γ-ray Quasi-periodic Modulation in the Blazar PKS 0301–243?
文献类型：期刊论文
| 作者 | Zhang,Peng-Fei1,2; Yan,Da-Hai3,4,5; Zhou,Jia-Neng6; Fan,Yi-Zhong1; Wang,Jian-Cheng3,4,5; Zhang,Li2 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-08-14 |
| 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 | Abstract We report a nominally high-confidence γ-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 γ-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 , 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 γ-ray quasi-periodic modulation may be evidence of a binary supermassive black hole. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-845-1-AA7ECD |
| 出版者 | The American Astronomical Society |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23900]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China zhangpengfee@pmo.ac.cn, yzfan@pmo.ac.cn 2.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China 3.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China; yandahai@ynao.ac.cn 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 6.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China |
| 推荐引用方式 GB/T 7714 | Zhang,Peng-Fei,Yan,Da-Hai,Zhou,Jia-Neng,et al. A γ-ray Quasi-periodic Modulation in the Blazar PKS 0301–243?[J]. The 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 γ-ray Quasi-periodic Modulation in the Blazar PKS 0301–243?.The Astrophysical Journal,845(1). |
| MLA | Zhang,Peng-Fei,et al."A γ-ray Quasi-periodic Modulation in the Blazar PKS 0301–243?".The Astrophysical Journal 845.1(2017). |
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来源：紫金山天文台
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