Long-term Optical Spectroscopic Variability of BL Lacertae Object AO 0235+164
文献类型：期刊论文
| 作者 | He, W. T.1; Xiong DR(熊定荣)2; Kang, S. J.3; Zheng, Y. G.1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-06-01 |
| 卷号 | 1003期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae6500 |
| 产权排序 | 第2完成单位 |
| 文献子类 | Article |
| 英文摘要 | The changing-look (CL) phenomenon in active galactic nuclei (AGNs) poses a significant challenge to the unified model. As a special subclass of AGN, blazars provide valuable insights. The CL behavior in the blazars not only helps us probe the intrinsic physical properties of AGN structures but also offers an ideal laboratory for exploring the dynamical coupling between the accretion disk and relativistic jets. Compiled with the historical spectroscopic data, together with an analysis of the gamma-ray and optical light curves, we find the following: (1) AO 0235+164 exhibits an oscillatory transitions between BL Lac and FSRQ states. That is, when the accretion rate increases, jet activity gradually weakens and the source transitions to an FSRQ state, and when the accretion rate decreases, the jet re-enters a flaring phase and the source returns to a BL Lac state. (2) The positive correlation relationship between equivalent width and accretion rate is primarily observed during the FSRQ phase, indicating that the broad emission lines in this stage are mainly driven by accretion-disk radiation. These results suggest that the changing-look behavior of AO 0235+164 cannot be explained solely by continuum dilution, but is instead regulated by the coupled evolution of jet activity and accretion-disk emission. We argue that strong evidence for the CL blazar represent a transitional population with physical properties intermediate between classical FSRQ and BL Lac object could be obtained from long-term optical spectroscopic observation. |
| 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 | ACTIVE GALACTIC NUCLEI ; BLACK-HOLE MASSES ; BROAD-LINE REGION ; SPECTRAL ENERGY-DISTRIBUTIONS ; ADVECTION-DOMINATED ACCRETION ; QUASAR PROPERTIES ; TIDAL DISRUPTION ; LAC OBJECTS ; JET POWER ; H-ALPHA |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)[12163002] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001769194100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC)[12163002] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29231]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Zheng, Y. G. |
| 作者单位 | 1.Department of Physics, Yunnan Normal University, Kunming, Yunnan 650092, People’s Republic of China; ynzyg@ynu.edu.cn; 2.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, People’s Republic of China; 3.School of Physics and Electrical Engineering, Liupanshui Normal University, Liupanshui, Guizhou 553004, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | He, W. T.,Xiong DR,Kang, S. J.,et al. Long-term Optical Spectroscopic Variability of BL Lacertae Object AO 0235+164[J]. ASTROPHYSICAL JOURNAL,2026,1003(2). |
| APA | He, W. T.,熊定荣,Kang, S. J.,&Zheng, Y. G..(2026).Long-term Optical Spectroscopic Variability of BL Lacertae Object AO 0235+164.ASTROPHYSICAL JOURNAL,1003(2). |
| MLA | He, W. T.,et al."Long-term Optical Spectroscopic Variability of BL Lacertae Object AO 0235+164".ASTROPHYSICAL JOURNAL 1003.2(2026). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。