Revisiting Quasi-periodic Modulation in γ-Ray Blazar PKS 2155-304 with Fermi Pass 8 Data
文献类型：期刊论文
| 作者 | Zhang,Peng-fei1,2; Yan,Da-hai3,4,5; Liao,Neng-hui1; Wang,Jian-cheng3,4,5 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 835期号:2 |
| 关键词 | BL Lacertae objects: individual (PKS 2155-304) galaxies: jets gamma-rays: galaxies gamma-rays: general |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/835/2/260 |
| 英文摘要 | 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 ～4.9σ. The constraint of multifrequencies quasi-periodic variabilities on blazar emission model is discussed. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-835-2-260 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23754]  |
| 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 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 |
| 推荐引用方式 GB/T 7714 | Zhang,Peng-fei,Yan,Da-hai,Liao,Neng-hui,et al. Revisiting Quasi-periodic Modulation in γ-Ray Blazar PKS 2155-304 with Fermi Pass 8 Data[J]. The Astrophysical Journal,2017,835(2). |
| APA | Zhang,Peng-fei,Yan,Da-hai,Liao,Neng-hui,&Wang,Jian-cheng.(2017).Revisiting Quasi-periodic Modulation in γ-Ray Blazar PKS 2155-304 with Fermi Pass 8 Data.The Astrophysical Journal,835(2). |
| MLA | Zhang,Peng-fei,et al."Revisiting Quasi-periodic Modulation in γ-Ray Blazar PKS 2155-304 with Fermi Pass 8 Data".The Astrophysical Journal 835.2(2017). |
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来源：紫金山天文台
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