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The Relation between the Optical Variability Timescale, Magnetic Field of Jets, and Black Hole Spin in Active Galactic Nuclei

文献类型：期刊论文

作者Chen, Yongyun7; Gu, Qiusheng6; Fan, Junhui5; Xiong DR(熊定荣)1; Yu, Xiaoling7; Guo, Xiaotong4; Ding, Nan3; Yi, Ting-Feng2
刊名ASTROPHYSICAL JOURNAL
出版日期2025-11-01
卷号993期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/ae08ac
产权排序第4完成单位
文献子类Article
英文摘要We investigate the relationship among the jet magnetic field, black hole spin, black hole mass, Eddington ratio, and optical variability timescales in jetted active galactic nuclei (AGNs). By fitting a damped random walk (DRW) model to the g-band light curves, we obtain the characteristic variability timescale (tau DRW) for 41 jetted AGNs with precise supermassive black hole (SMBH) mass measurements. Our main results are as follows: (i) Our analysis reveals a significant correlation between the jet magnetic field (B1 pc), black hole spin (j) and the characteristic variability timescale within our sample. These findings suggest that the optical variability of jetted AGNs is influenced by the jet magnetic field and black hole spin. Furthermore, the characteristic variability timescale aligns with the electron escape timescale, as evidenced by the relationship between the characteristic variability timescale and jet magnetic field ( tau DRW proportional to B1pc0.76 +/- 0.22 ). (ii) We confirm a significant correlation between the characteristic variability timescale and SMBH mass, expressed as: log tau DRW=0.52(+/- 0.21)logMBH/M circle dot-3.12(+/- 1.90) , with an intrinsic scatter of 0.08 dex. The slope of this relationship is consistent with that between the thermal timescale and black hole mass. Our results support the hypothesis that magnetorotational instability fluctuations drive the intrinsic variability observed in the light curves emitted by the AGN's accretion disk.
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
WOS关键词BL LACERTAE OBJECTS ; X-RAY VARIABILITY ; STRIPE 82 QUASARS ; AGN LIGHT CURVES ; ACCRETION-DISK ; EDDINGTON RATIO ; ULTRAVIOLET VARIABILITY ; UV/OPTICAL VARIABILITY ; STOCHASTIC VARIABILITY ; SPECTRAL VARIABILITY
资助项目National Natural Science of China[11733001]; National Natural Science of China[U2031201]; National Natural Science of China[12433004]; National Natural Science Foundation of China[2081450001]; Yunnan Province[12303017]; National Nature Science Foundation of China[2308085QA33]; Anhui Provincial Natural Science Foundation[12473020]; NSFC[YNWR-QNBJ-2020-116]; Yunnan Province Youth Top Talent Project; CAS Light of West China Program
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001599097600001
出版者IOP Publishing Ltd
资助机构National Natural Science of China[11733001, U2031201, 12433004] ; National Natural Science Foundation of China[2081450001] ; Yunnan Province[12303017] ; National Nature Science Foundation of China[2308085QA33] ; Anhui Provincial Natural Science Foundation[12473020] ; NSFC[YNWR-QNBJ-2020-116] ; Yunnan Province Youth Top Talent Project ; CAS Light of West China Program
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28662]  
专题云南天文台_丽江天文观测站（南方基地）
通讯作者Chen, Yongyun
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China;
2.Department of Physics, Yunnan Normal University, Kunming 650500, People’s Republic of China
3.School of Physical Science and Technology, Kunming University 650214, People’s Republic of China;
4.Anqing Normal University, 246133, People’s Republic of China;
5.Center for Astrophysics, Guang zhou University, Guang zhou510006, People’s Republic of China;
6.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People’s Republic of China; qsgu@nju.edu.cn;
7.College of Physics and Electronic Engineering, Qujing Normal University, Qujing 655011, People’s Republic of China; ynkmcyy@yeah.net;
推荐引用方式
GB/T 7714		 Chen, Yongyun,Gu, Qiusheng,Fan, Junhui,et al. The Relation between the Optical Variability Timescale, Magnetic Field of Jets, and Black Hole Spin in Active Galactic Nuclei[J]. ASTROPHYSICAL JOURNAL,2025,993(1).
APA Chen, Yongyun.,Gu, Qiusheng.,Fan, Junhui.,熊定荣.,Yu, Xiaoling.,...&Yi, Ting-Feng.(2025).The Relation between the Optical Variability Timescale, Magnetic Field of Jets, and Black Hole Spin in Active Galactic Nuclei.ASTROPHYSICAL JOURNAL,993(1).
MLA Chen, Yongyun,et al."The Relation between the Optical Variability Timescale, Magnetic Field of Jets, and Black Hole Spin in Active Galactic Nuclei".ASTROPHYSICAL JOURNAL 993.1(2025).

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