银河系球状星团射电脉冲星的统计研究

球状星团是银河系中最古老的天体系统之一,其恒星密度极端高的核心有利于创造双星之间进行物质交换的环境,从而形成毫秒脉冲星双星、掩食脉冲双星、主序-毫秒脉冲双星、高轨道偏心率双星等双星系统,通过对这些系统进行研究有助于进一步认识球状星团的动力学、双星系统的演化和星际介质等相关问题。自30年前在球状星团中发现第一颗射电脉冲星至今,随着较高灵敏度射电望远镜的不断建成和使用,以及数据数字化处理能力的提高,天文学家在球状星团射电脉冲星的观测和理论研究方面取得很大进展。收集并分析了最新的球状星团脉冲星的数据,研究了球状星团射电脉冲星的自转周期和轨道周期的基本性质,讨论了球状星团脉冲星的搜寻,最后统计分析了双星系统,包括不同伴星类型的脉冲星的分布以及掩食双星系统的性质。

Statistical Research on Radio Pulsars in Globular Clusters of the Milky Way

Globular clusters are one of the oldest celestial systems in the Milky Way.The core of the cluster with extremely high density of stars is benefit to exchange the matter between the binary stars.So it is relatively easy to form the binary systems such as millisecond binary pulsars,eclipsing binary pulsars,main sequence-millisecond binary pulsars,and binary pulsars with high orbital eccentricity.According to study these systems,we can further understand the properties of the dynamics of globular clusters,the evolution of binary systems and the interstellar medium.Since the first radio pulsar in a globular cluster was found 30 years ago,astronomers have made great progress in the observation and theoretical research of radio pulsars in globular cluster by using the radio telescope with high sensitivity and the improvement of the ability of data processing.In this paper,we collect and analyze a large number of newest data of radio pulsars in globular clusters.We research the basic properties of the rotation period and the orbit period of these pulsars,and discuss the searching of radio pulsars in globular clusters.Finally,we statistically analyze the binary pulsars in globular clusters,including the distribution of pulsars with the different companion stars and the properties of the eclipsing pulsars.