The Variability of Persistent Radio Sources of Fast Radio Bursts
文献类型：期刊论文
| 作者 | Yang, Ai Yuan1,2; Feng, Yi3,4; Tsai, Chao-Wei1,2,5; Li, Di1,2,6; Shi, Hui1,2; Wang, Pei1,2,5; Yang, Yuan-Pei7,8; Zhang, Yong-Kun1; Niu, Chen-Hui9; Yao, Ju-Mei10
|
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2024-11-20 |
| 卷号 | 976期号:2页码:165 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad7d02 |
| 产权排序 | 10 |
| 英文摘要 | Abstract Over 700 bright millisecond-duration radio transients, known as fast radio bursts (FRBs), have been identified to date. Nevertheless, the origin of FRBs remains unknown. Two repeating FRBs (FRB 20121102A and FRB 20190520B) have been verified to be associated with persistent radio sources (PRSs), making them the best candidates to study the nature of FRBs. Monitoring the variability in PRSs is essential for understanding their physical nature. We conducted 22 observations of the PRSs linked to FRB 20121102A and FRB 20190520B using the Karl G. Jansky Very Large Array, to study their variability. We have observed significant flux variability for the PRSs of FRB 20121102A and FRB 20190520B, with a confidence level exceeding 99.99%, based on the observations covering the longest timescale recorded to date. The observed variability of the two PRSs exhibits no significant difference in amplitude across both short and long timescales. We found that the radio-derived star formation rates of the two FRB hosts are significantly higher than those measured by the optical H α emissions, indicating that their host galaxies are highly obscured or most radio emissions are not from star formation processes. The observed timescale of PRS flux evolution constrained the magnetic field of FRB 20121102A with B ∥ ? 1 mG and FRB 20190520B with B ∥ ? 0.1 mG. |
| 语种 | 英语 |
| WOS记录号 | WOS:001359611400001 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7217]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Feng, Yi |
| 作者单位 | 1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; dili@nao.cas.cn, cwtsai@nao.cas.cn 2.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China 3.Research Center for Astronomical Computing, Zhejiang Laboratory, Hangzhou 311100, People's Republic of China; yifeng@zhejianglab.com 4.Institute for Astronomy, School of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China 5.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People's Republic of China 6.Department of Astronomy, Tsinghua Univerisity, 30 Shuangqing Road, Beijing 100084, People's Republic of China 7.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650504, People's Republic of China 8.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People's Republic of China 9.Institute of Astrophysics, Central China Normal University, Wuhan 430079, Hubei, People's Republic of China 10.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Yang, Ai Yuan,Feng, Yi,Tsai, Chao-Wei,et al. The Variability of Persistent Radio Sources of Fast Radio Bursts[J]. The Astrophysical Journal,2024,976(2):165. |
| APA | Yang, Ai Yuan.,Feng, Yi.,Tsai, Chao-Wei.,Li, Di.,Shi, Hui.,...&Cotton, W. D..(2024).The Variability of Persistent Radio Sources of Fast Radio Bursts.The Astrophysical Journal,976(2),165. |
| MLA | Yang, Ai Yuan,et al."The Variability of Persistent Radio Sources of Fast Radio Bursts".The Astrophysical Journal 976.2(2024):165. |
入库方式： OAI收割
来源：新疆天文台
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。