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Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 4151 during Outburst Stage. II. Results of Four Seasons of Observation

文献类型：期刊论文

作者Feng HC(封海成)5,6,7,8; Li SS(李莎莎)5,6,7,8; Bai JM(白金明)5,6,7,8; Liu HT(刘洪涛)6,7,8; Lu KX(卢开兴)6,7,8; Pang, Yu-Xuan3,4; Sun, Mouyuan2; Wang JG(王建国)6,7,8; Zhang, Yang-Wei1; Zhou, Shuying2
刊名ASTROPHYSICAL JOURNAL
出版日期2024-12-01
卷号976期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ad8568
产权排序第1完成单位
文献子类Article
英文摘要We present the results of a four-year velocity-resolved reverberation mapping (RM) campaign of the changing-look active galactic nucleus (CL-AGN) NGC 4151 during its outburst phase. By measuring the time lags of the H alpha, H beta, H gamma, He i, and He ii emission lines, we confirm a stratified broad-line region (BLR) structure that aligns with predictions from photoionization models. Intriguingly, we observed an anti-breathing phenomenon, where the lags of broad emission lines decreased with increasing luminosity, contrary to the typical expectation. This anomaly may be attributed to the influence of the ultraviolet-optical lag or nonvirialized motions in the BLR gas. Velocity-resolved RM and ionization mapping analyses revealed rapid and significant changes in the BLR geometry and kinematics on timescales of less than a year, which cannot be interpreted by any single mechanism, such as an inhomogeneous BLR, variations in radiation pressure, or changes in the illuminated ionizing field. Additionally, the H beta lags of NGC 4151 and other CL-AGNs agree with the radius-luminosity relationship established for AGNs with low accretion rates, implying that the CL phenomenon is more likely driven by intrinsic changes in the accretion rate rather than obscuration. These findings provide new insights into the complex internal processes of CL-AGNs and highlight the importance of long-term, multiline RM for understanding BLR structures, geometry, and kinematics.
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词BROAD-LINE REGION ; SUPERMASSIVE BLACK-HOLES ; H-BETA ; EMISSION-LINE ; MONITORING PROJECT ; SEYFERT-GALAXIES ; VARIABILITY ; AGN ; SIZE ; MASS
资助项目MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2021YFA1600404]; National Key R&D Program of China[12303022]; National Key R&D Program of China[12203096]; National Key R&D Program of China[12373018]; National Key R&D Program of China[11991051]; National Key R&D Program of China[12322303]; National Key R&D Program of China[12203041]; National Key R&D Program of China[12073068]; National Natural Science Foundation of China[202301AT070358]; National Natural Science Foundation of China[202301AT070339]; Yunnan Fundamental Research Projects; Yunnan Postdoctoral Research Foundation; Special Research Assistant Funding Project of Chinese Academy of Sciences[2022J06002]; Natural Science Foundation of Fujian Province of China[CMS-CSST-2021-A06]; China Manned Space Project
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001360564400001
出版者IOP Publishing Ltd
资助机构MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2021YFA1600404] ; National Key R&D Program of China[12303022, 12203096, 12373018, 11991051, 12322303, 12203041, 12073068] ; National Natural Science Foundation of China[202301AT070358, 202301AT070339] ; Yunnan Fundamental Research Projects ; Yunnan Postdoctoral Research Foundation ; Special Research Assistant Funding Project of Chinese Academy of Sciences[2022J06002] ; Natural Science Foundation of Fujian Province of China[CMS-CSST-2021-A06] ; China Manned Space Project
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27795]  
专题云南天文台_丽江天文观测站（南方基地）
云南天文台_中国科学院天体结构与演化重点实验室
星系类星体研究组
作者单位1.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650500, People's Republic of China
2.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People's Republic of China;
3.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China;
4.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People's Republic of China;
5.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China;
6.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China;
7.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, Yunnan, People's Republic of China;
8.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, Yunnan, People's Republic of China; hcfeng@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Feng HC,Li SS,Bai JM,et al. Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 4151 during Outburst Stage. II. Results of Four Seasons of Observation[J]. ASTROPHYSICAL JOURNAL,2024,976(2).
APA 封海成.,李莎莎.,白金明.,刘洪涛.,卢开兴.,...&Zhou, Shuying.(2024).Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 4151 during Outburst Stage. II. Results of Four Seasons of Observation.ASTROPHYSICAL JOURNAL,976(2).
MLA 封海成,et al."Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 4151 during Outburst Stage. II. Results of Four Seasons of Observation".ASTROPHYSICAL JOURNAL 976.2(2024).

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来源：云南天文台

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