Characterizing the Origins of the Gamma-Ray Variability of the Jetted Active Galactic Nuclei Observed with Fermi-LAT
文献类型：期刊论文
| 作者 | Chen, Yongyun1; Gu, Qiusheng2; Fan, Junhui3; Xiong DR(熊定荣)4; Yu, Xiaoling1; Zhong, Xiaogu1; Guo, Xiaotong5; Ding, Nan6 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2026-06-01 |
| 卷号 | 284期号:2 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ae6075 |
| 产权排序 | 第4完成单位 |
| 文献子类 | Article |
| 英文摘要 | We have conducted an analysis of gamma-ray variability on a large sample of jetted active galactic nuclei (AGNs) by utilizing archival Fermi Large Area Telescope light curves and applying damped random walk modeling to obtain the variability amplitude. Our primary findings are summarized as follows. (1) The mean variability damping timescales of our sources are approximately 100 days. This damping timescale may imply that diffusive shock acceleration plays an important role in the variability of gamma-ray emission. (2) Flat-spectrum radio quasars demonstrate greater variability amplitude compared to BL Lacertae objects. (3) The ratio of the distance of the emission region from the central supermassive black hole to the dusty torus radius for our sources is R approximate to 2-4.5RDT. In contrast, the ratio of the distance of the emission region from the central supermassive black hole to the broad-line region (BLR) radius for our sources is R approximate to 135-295RBLR-in and R approximate to 123-270RBLR-out. These findings indicate that the gamma-ray emission region in jetted AGNs is likely located beyond the BLR and potentially could be associated with the dusty torus. (4) A statistical correlation is observed between the variability amplitude and radio luminosity, radio loudness, X-ray luminosity, X-ray loudness, gamma-ray luminosity, and gamma-ray loudness, indicating a potential relationship between gamma-ray variability and jet activity. (5) The variability amplitude also shows a statistical correlation with the synchrotron peak frequency luminosity, inverse-Compton peak frequency luminosity, and Compton dominance. (6) The variability amplitude also correlates with the black hole mass, accretion-disk luminosity, and Eddington ratio, implying that the accretion disk may also contribute to gamma-ray variability. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | STRIPE 82 QUASARS ; OPTICAL VARIABILITY ; LIGHT CURVES ; MULTIWAVELENGTH VARIABILITY ; TIME VARIABILITY ; RADIATION-FIELDS ; EDDINGTON RATIO ; EMISSION-LINE ; 4TH CATALOG ; INNER JET |
| 资助项目 | National Natural Science Foundation of China[12203028] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001769200600001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China[12203028] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29236]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Chen, Yongyun; Gu, Qiusheng; Xiong DR(熊定荣) |
| 作者单位 | 1.College of Physics and Electronic Engineering, Qujing Normal University, Qujing 655011, People’s Republic of China; ynkmcyy@yeah; 2.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People’s Republic of China; qsgu@nju.edu.cn; 3.Center for Astrophysics, Guang zhou University, Guangzhou 510006, People’s Republic of China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China; xiongdingrong@ynao.ac.cn; 5.Anqing Normal University, 246133, People’s Republic of China; 6.School of Physical Science and Technology, Kunming University, 650214, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Chen, Yongyun,Gu, Qiusheng,Fan, Junhui,et al. Characterizing the Origins of the Gamma-Ray Variability of the Jetted Active Galactic Nuclei Observed with Fermi-LAT[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2026,284(2). |
| APA | Chen, Yongyun.,Gu, Qiusheng.,Fan, Junhui.,熊定荣.,Yu, Xiaoling.,...&Ding, Nan.(2026).Characterizing the Origins of the Gamma-Ray Variability of the Jetted Active Galactic Nuclei Observed with Fermi-LAT.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,284(2). |
| MLA | Chen, Yongyun,et al."Characterizing the Origins of the Gamma-Ray Variability of the Jetted Active Galactic Nuclei Observed with Fermi-LAT".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 284.2(2026). |
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来源：云南天文台
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