Revisiting the reported period of FRB 20201124A using MCMC methods

IF 2.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astrophysics and Space Science Pub Date : 2026-05-29 DOI:10.1007/s10509-026-04593-1

Jun-Yi Shen, Yuan-Chuan Zou

引用次数: 0

Abstract

Fast radio bursts (FRBs) are millisecond-duration radio transients whose physical origin remains uncertain. Magnetar-based models, motivated by observed properties such as polarization and large rotation measures, suggest that FRB emission may be modulated by the magnetar spin period. We present an efficient method to search for periodic signals in repeating FRBs by combining phase folding and Markov Chain Monte Carlo (MCMC) parameter estimation. Our method accelerates period searches. We test the method using observational data from repeater FRB 20201124A, and show that it can recover reported candidate periods.

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用MCMC方法重新审视FRB 20201124A的报告周期

快速射电暴（FRBs）是一种持续时间为毫秒的射电瞬变现象，其物理起源尚不确定。基于磁星的模型，基于观测到的特性，如极化和大旋转测量，表明快速射电暴发射可能受到磁星自旋周期的调制。提出了一种结合相位折叠和马尔可夫链蒙特卡罗（MCMC）参数估计的快速射电暴周期信号搜索方法。我们的方法加速了时期搜索。我们使用FRB 20201124A中继器的观测数据对该方法进行了测试，结果表明该方法可以恢复报告的候选周期。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Astrophysics and Space Science 地学天文-天文与天体物理

CiteScore

3.40

自引率

5.30%

发文量

106

审稿时长

2-4 weeks

期刊介绍： Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.