天文学进展2025，Vol.43Issue(4)：558-580,23.DOI:10.3969/j.issn.1000-8349.2025.04.03
重复快速射电暴的偏振研究进展
Research Progress on Polarization of Repeating Fast Radio Bursts
摘要
Abstract
To investigate the polarization properties,radiation mechanisms,and origins of repeating fast radio bursts,definitions of polarization-related physical parameters such as Stokes parameters and Faraday rotation measure are first outlined,along with observational analysis methods including Q-U fitting and RM synthesis.By analyzing radiation mechanisms like curvature radiation and inverse Compton scattering,as well as propagation effects such as cyclotron absorption and generalized Faraday rotation,their influences on polarization signals are examined.On this basis,the polarization observational characteristics of six typical repeating FRBs including FRB 20121102A are highlighted,revealing that repeating FRBs also exhibit high circular polarization,thereby challenging the previous view that circular polarization is unique to non-repeating FRBs.Finally,origin models such as the magnetar model are discussed.The results show that polarization properties can provide key observational constraints for understand-ing the radiation mechanisms and origins of repeating FRBs,and support the magnetar model as being reasonably plausible.关键词
辐射机制/快速射电暴/偏振Key words
radiation mechanism/fast radio burst/polarization分类
天文与地球科学引用本文复制引用
CAO Shuo,HAO Longfei,Wang Min,Li Zhixuan..重复快速射电暴的偏振研究进展[J].天文学进展,2025,43(4):558-580,23.基金项目
国家自然科学基金(12173087) （12173087）
