毫秒脉冲星偏振轮廓稳定性的研究  

Research on the Polarization Pro le Stability of Millisecond Pulsars

作　　者：李杰 游霄鹏[1] LI Jie;YOU Xiao-peng(School of Physical Science and Technology,Southwest University,Chongqing 400715)

机构地区：[1]西南大学物理科学与技术学院,重庆400715

出　　处：《天文学报》2025年第1期69-79,共11页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(12133004)资助。

摘　　要：相对于正常脉冲星,毫秒脉冲星是一类自转速度更快的中子星,其发出的脉冲信号具有极高的稳定性.脉冲星的偏振轮廓的稳定性是研究脉冲星辐射机制和星际介质性质的重要问题之一.利用澳大利亚Parkes64 m望远镜的观测数据,对3颗毫秒脉冲星PSR J1022+1001、PSR J1730-2304和PSR J2129-5721的偏振轮廓稳定性进行了研究.通过对观测数据的分析,发现其偏振轮廓在不同时间存在着细小的变化.分析轮廓变化的原因,提出了可能的解释,包括星际介质的影响、脉冲星本身内禀属性的不稳定性等.Compared with normal pulsars,millisecond pulsars are a class of neutron stars with faster rotation speed,and the pulse signals emitted by them have extremely high stability.The stability of the polarization profile of pulsars is one of the important issues in the study of pulsar radiation mechanism and interstellar medium properties.The polarization profile stability of three millisecond pulsars PSR J1022+1001,PSR J1730-2304 and PSR J2129-5721 was studied using the observation data of the Parkes 64 m telescope in Australia.Analysis of the observations shows that the polarization profile changes slightly at different times.The reasons for the changes are analyzed and the possible explanations are proposed,including the effect of the interstellar scintillation and the instability of the intrinsic properties of the pulsars.

关 键 词：脉冲星:普通 方法:数据分析 星际介质:普通 

分 类 号：P145[天文地球—天体物理]