A sudden change and recovery in the magnetic environment around a repeating fast radio burst

• 成果类型: Article
• 署名作者: Li, Y.; Zhang, S. B.; Yang, Y. P.; Tsai, C. W.; Yang, X.; Law, C. J.; Anna-Thomas, R.; Chen, X. L.; Lee, K. J.; Tang, Z. F.; Xiao, D.; Xu, H.; Yang, X. L.; Chen, G.; Feng, Y.; Li, D. Z.; Mckinven, R.; Niu, J. R.; Shin, K.; Wang, B. J.; Zhang, C. F.; Zhang, Y. K.; Zhou, D. J.; Zhu, Y. H.; Dai, Z. G.; Chang, C. M.; Geng, J. J.; Han, J. L.; Hu, L.; Li, D.; Luo, R.; Niu, C. H.; Shi, D. D.; Sun, T. R.; Wu, X. F.; Zhu, W. W.; Jiang, P.; Zhang, B.
• 署名单位: Chinese Academy of Sciences; Purple Mountain Observatory, CAS; Nanjing Institute of Astronomical Optics & Technology, NAOC, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Commonwealth Scientific & Industrial Research Organisation (CSIRO); Australia Telescope National Facility; Yunnan University; Chinese Academy of Sciences; Nanjing Institute of Geology & Paleontology, CAS; National Astronomical Observatory, CAS; Beijing Normal University; California Institute of Technology; California Institute of Technology; West Virginia University; West Virginia University; University of Amsterdam; Peking University; Peking University; Chinese Academy of Sciences; Shanghai Astronomical Observatory, CAS; Zhejiang Laboratory; Zhejiang University; Princeton University; Tsinghua University; McGill University; McGill University; Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); Chinese Academy of Sciences; National Time Service Center, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; University of Pennsylvania; Carnegie Mellon University; Tsinghua University; Guangzhou University; Anhui University of Science & Technology; Guizhou University; University of Hong Kong; University of Hong Kong; Nevada System of Higher Education (NSHE); University of Nevada Las Vegas; Nevada System of Higher Education (NSHE); University of Nevada Las Vegas
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.adq3225
• 发表日期: 2026-01-15
• 页码: 280-284
• 关键词: statistical-analysis; ENERGY-DISTRIBUTION; SUPERNOVA REMNANT; MASS EJECTIONS; psr b1259-63; GIANT FLARE; polarization; pulsar; DISCOVERY; emission

摘要

Fast radio bursts (FRBs) are millisecond-duration radio transients from extragalactic sources. Some repeating FRBs exhibit variations in their Faraday rotation measure (RM) due to changes in their magneto-ionic environment. We report magneto-ionic variations of FRB 20220529, a repeating FRB from a disk galaxy at redshift 0.18. For the first 17 months of observations, the RM had a median of 17 radians per square meter (rad m-2) and a scatter of 101 rad m-2. In December 2023, the RM jumped to 1977 +/- 84 rad m-2, then gradually returned to typical values within 2 weeks. This sudden RM variation indicates that a dense magnetized clump of plasma passed across the line of sight. We discuss potential explanations, including a coronal mass ejection from a companion star, high plasma turbulence, or binary orbital motion.