A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131
文献类型：期刊论文
| 作者 | Zhou, Jianeng1; Wang, Zhongxiang1; Chen, Liang1,2; Wiita, Paul J.3; Vadakkumthani, Jithesh4; Morrell, Nidia5; Zhang, Pengfei6; Zhang, Jujia7,8,9 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2018-11-02 |
| 卷号 | 9页码:6 |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-018-07103-2 |
| 通讯作者 | Wang, Zhongxiang(wangzx@shao.ac.cn) |
| 英文摘要 | Since 2016 October, the active galaxy PKS 2247-131 has undergone a gamma-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247-131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a similar or equal to 34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247-131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247-131. |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; BL LACERTAE ; HELICAL JETS ; TIME-SERIES ; SPACED DATA ; OJ 287 ; TELESCOPE ; VARIABILITY ; OBJECTS ; ORIGIN |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000449069700003 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/21022]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Wang, Zhongxiang |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Coll New Jersey, 2000 Pennington Rd, Ewing, NJ 08628 USA 4.Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India 5.Carnegie Observ, Las Campanas Observ, Casilla 601, La Serena 1700000, Chile 6.Chinese Acad Sci, Purple Mt Observ, 8 Yuanhua Rd, Nanjing 210034, Jiangsu, Peoples R China 7.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 8.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China 9.Chinese Acad Sci, Ctr Astron Megasci, 20A Datun Rd, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Jianeng,Wang, Zhongxiang,Chen, Liang,et al. A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131[J]. NATURE COMMUNICATIONS,2018,9:6. |
| APA | Zhou, Jianeng.,Wang, Zhongxiang.,Chen, Liang.,Wiita, Paul J..,Vadakkumthani, Jithesh.,...&Zhang, Jujia.(2018).A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131.NATURE COMMUNICATIONS,9,6. |
| MLA | Zhou, Jianeng,et al."A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131".NATURE COMMUNICATIONS 9(2018):6. |
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来源：紫金山天文台
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