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A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131
Zhou, Jianeng1; Wang, Zhongxiang1; Chen, Liang1,2; Wiita, Paul J.3; Vadakkumthani, Jithesh4; Morrell, Nidia5; Zhang, Pengfei6; Zhang JJ(张居甲)7,8,9
Source PublicationNATURE COMMUNICATIONS
2018-11-02
Volume9Pages:6
DOI10.1038/s41467-018-07103-2
Contribution Rank第7完成单位
Indexed BySCI ; EI
Abstract

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.

Funding ProjectChinese Academy of Sciences (CAS)[QYZDJ-SSW-SYS023] ; People's Government of Yunnan Province ; National Program on Key Research and Development Project[2016YFA0400804] ; National Natural Science Foundation of China[11603059] ; National Natural Science Foundation of China[11633007] ; National Natural Science Foundation of China[U1738124] ; China Postdoctoral Science Foundation[2017M621859]
Funding OrganizationChinese Academy of Sciences (CAS)[QYZDJ-SSW-SYS023] ; People's Government of Yunnan Province ; National Program on Key Research and Development Project[2016YFA0400804] ; National Natural Science Foundation of China[11603059, 11633007, U1738124] ; China Postdoctoral Science Foundation[2017M621859]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATURE PUBLISHING GROUP
Publication PlaceMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
ISSN2041-1723
URL查看原文
WOS IDWOS:000449069700003
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS KeywordActive Galactic Nuclei ; Bl Lacertae ; Helical Jets ; Time-series ; Spaced Data ; Oj 287 ; Telescope ; Variability ; Objects ; Origin
EI Accession Number5509017
EI Classification Number901geobase: Related Topics
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18314
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorWang, Zhongxiang
Affiliation1.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, 200030 Shanghai, China
2.University of Chinese Academy of Sciences, 19A Yuquan Road, 100049 Beijing, China
3.The College of New Jersey, 2000 Pennington Road, Ewing, NJ 08628-0718, USA
4.Inter-University Centre for Astronomy and Astrophysics, Pune 411 007, India
5.Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena 1700000, Chile
6.Purple Mountain Observatory, Chinese Academy of Sciences, 8 Yuanhua Road, 210034 Nanjing, China
7.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, China
8.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, China
9.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, 100012 Beijing, China
Recommended Citation
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 JJ.(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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