A Quasi-periodic Oscillation in the gamma-Ray Emission from the Non-blazar Active Galactic Nucleus PKS 0521-36
文献类型：期刊论文
| 作者 | Zhang, Haiyun1; Yan DH(闫大海)2 ; Zhang, Pengfei1; Yang, Shenbang1; Zhang, Li1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2021-09 |
| 卷号 | 919期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac0cf0 |
| 产权排序 | 第2完成单位 |
| 文献子类 | Article |
| 英文摘要 | Long-term gamma-ray variability of a non-blazar Active Galactic Nucleus PKS 0521-36 is investigated by using Fermi Large Area Telescope (Fermi-LAT) pass 8 data covering from 2008 August to 2021 March. The results show that the histogram of the gamma-ray fluxes follows a log-normal distribution. Interestingly, in the analysis of similar to 5.8 yr (from MJD 56317-58447) LAT data between two outbursts (occurring during 2012 October and 2019 May respectively), a quasi-periodic oscillation (QPO) with a period of similar to 1.1 yr (similar to 5 sigma of significance) is found in the Lomb-Scargle Periodogram (LSP), the Weighted Wavelet Z-transform, and the REDFIT results. This quasiperiodic signal also appears in the results of Gaussian process modeling the light curve. Therefore, the robustness of the QPO is examined by four different methods. This is the first gamma-ray QPO found in a mildly beamed jet. Our results imply that the gamma-ray outbursts play an important role in the formation of the gamma-ray QPO. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| 资助项目 | National Key R&D Program of China[2018YFA0404204] ; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11803081] ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University[2018FY001(-003)] ; CAS Youth Innovation Promotion Association and Basic research Program of Yunnan Province[202001AW070013] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000698460100001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key R&D Program of China[2018YFA0404204] ; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11803081] ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University[2018FY001(-003)] ; CAS Youth Innovation Promotion Association and Basic research Program of Yunnan Province[202001AW070013] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/24572]  |
| 专题 | 云南天文台_高能天体物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Yan DH(闫大海) |
| 作者单位 | 1.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China lizhang@ynu.edu.cn; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, People's Republic of China; yandahai@ynao.ac.cn |
| 推荐引用方式 GB/T 7714 | Zhang, Haiyun,Yan DH,Zhang, Pengfei,et al. A Quasi-periodic Oscillation in the gamma-Ray Emission from the Non-blazar Active Galactic Nucleus PKS 0521-36[J]. ASTROPHYSICAL JOURNAL,2021,919(1). |
| APA | Zhang, Haiyun,Yan DH,Zhang, Pengfei,Yang, Shenbang,&Zhang, Li.(2021).A Quasi-periodic Oscillation in the gamma-Ray Emission from the Non-blazar Active Galactic Nucleus PKS 0521-36.ASTROPHYSICAL JOURNAL,919(1). |
| MLA | Zhang, Haiyun,et al."A Quasi-periodic Oscillation in the gamma-Ray Emission from the Non-blazar Active Galactic Nucleus PKS 0521-36".ASTROPHYSICAL JOURNAL 919.1(2021). |
入库方式： OAI收割
来源：云南天文台
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