Institutional Repository of Radio Astronomy Research Laboratory
| The Variability of Persistent Radio Sources of Fast Radio Bursts | |
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 ; Cui, Yu-Zhu3; Su, Ren-Zhi3; Li, Xiao-Feng11; Zhang, Jun-Shuo1; Zhu, Yu-Hao1,12; Cotton, W. D.13
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| 2024-11-20 | |
| Source Publication | The Astrophysical Journal
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| ISSN | 0004-637X |
| Volume | 976Issue:2Pages:165 |
| Contribution Rank | 10 |
| Abstract | 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. |
| DOI | 10.3847/1538-4357/ad7d02 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001359611400001 |
| Publisher | The American Astronomical Society |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7218 |
| Collection | 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | Feng, Yi |
| Affiliation | 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 11.Changzhou Institute of Technology, 666 Liaohe Road, Changzhou 213002, People's Republic of China 12.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 13.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Yang-2024-The Variab（1073KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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