A persistently active fast radio burst source embedded in an expanding supernova remnant
文献类型：期刊论文
| 作者 | Niu, Chen-Hui5; Li, Di6,8,9; Yang, Yuan-Pei7; Zhu, Yuhao4,6; Zhang, Yongkun6; Zhang, Jia-Heng5; Du, Zexin5; Yao, Jumei1,2,3; Zheng, Xiaoping5; Wang, Pei6 |
| 刊名 | SCIENCE BULLETIN
 |
| 出版日期 | 2026-01-15 |
| 卷号 | 71期号:1页码:76-82 |
| 关键词 | Fast radio bursts Dispersion measure Supernova remnant Propagation effect FRB 20190520B |
| ISSN号 | 2095-9273 |
| DOI | 10.1016/j.scib.2025.11.023 |
| 产权排序 | 7 |
| 英文摘要 | Fast radio bursts (FRBs) remain one of the most puzzling astrophysical phenomena. While most FRBs are detected only once or sporadically, we present the identification of FRB 20190520B as the first persistently active source over a continuous span of 4 years. This rare long-term activity enabled a detailed investigation of its dispersion measure (DM) evolution. We also report that FRB 20190520B exhibits a substantial decrease in DM at a global rate of 12 4 0 3 pc cm-3 yr 1 , exceeding previous FRB's DM variation measurements by a factor of three and surpassing those observed in pulsars by orders of magnitude. The magnitude and consistency of the DM evolution, along with a high host DM contribution, strongly indicate that the source resides in a dense, expanding ionized medium, likely a young supernova remnant (SNR). (c) 2025 The Authors. Published by Elsevier B.V. and Science China Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| WOS关键词 | TEMPORAL VARIATIONS ; DISPERSION MEASURE ; PULSAR ; SCATTERING ; SCINTILLATION ; VARIABILITY ; MASS |
| 资助项目 | Foundation of Guizhou Provincial Education Department[(2023) 059] ; National Natural Science Foundation of China[12203045] ; National Key Research and Development Program of China[2024YFA1611603] ; Leading Innovation and Entrepreneurship Team of Zhejiang Province of China[2023R01008] ; Key R & D Program of Zhejiang Province[2024SSYS0012] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001663219800001 |
| 出版者 | ELSEVIER |
| 资助机构 | Foundation of Guizhou Provincial Education Department ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; Leading Innovation and Entrepreneurship Team of Zhejiang Province of China ; Key R & D Program of Zhejiang Province |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8505]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Niu, Chen-Hui; Li, Di |
| 作者单位 | 1.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 5.Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China 6.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 7.Yunnan Univ, South Western Inst Astron Res, Kunming 650504, Peoples R China 8.Res Ctr Astron Comp, Zhejiang Lab, Hangzhou 311100, Peoples R China 9.Tsinghua Univ, Dept Astron, New Cornerstone Sci Lab, Beijing 100084, Peoples R China 10.Natl Astron Observ Japan, Tokyo 1818588, Japan |
| 推荐引用方式 GB/T 7714 | Niu, Chen-Hui,Li, Di,Yang, Yuan-Pei,et al. A persistently active fast radio burst source embedded in an expanding supernova remnant[J]. SCIENCE BULLETIN,2026,71(1):76-82. |
| APA | Niu, Chen-Hui.,Li, Di.,Yang, Yuan-Pei.,Zhu, Yuhao.,Zhang, Yongkun.,...&Zhang, Junshuo.(2026).A persistently active fast radio burst source embedded in an expanding supernova remnant.SCIENCE BULLETIN,71(1),76-82. |
| MLA | Niu, Chen-Hui,et al."A persistently active fast radio burst source embedded in an expanding supernova remnant".SCIENCE BULLETIN 71.1(2026):76-82. |
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