标题： MeerKAT在半人马座ω中发现13颗新脉冲星 显示英文标题

标题： MeerKAT discovery of 13 new pulsars in Omega Centauri

摘要： 我们银河系中最巨大的球状星团，半人马座ω，是脉冲星搜索的一个有趣目标，因为它有多个恒星种群，并且存在它曾是被银河系吸收的星系核心的引人入胜的可能性。 最近在这个球状星团中发现的脉冲星及其与已知X射线源的关联表明，考虑到已知的X射线源数量很大，存在一个更大未被发现的脉冲星群体。 我们利用MeerKAT射电望远镜的卓越灵敏度，在半人马座ω中搜索脉冲星。 在本文中，我们介绍了这项调查的一些早期结果，包括发现了13个新的脉冲星；目前这个星团中已知的脉冲星总数为18个。 其中至少一半处于双星系统中，初步的轨道限制表明大多数双星系统具有轻质伴星。 我们还讨论了孤立脉冲星和双星脉冲星的比例以及它们在这个星团中的形成方式。 显示英文摘要

摘要： The most massive globular cluster in our Galaxy, Omega Centauri, is an interesting target for pulsar searches, because of its multiple stellar populations and the intriguing possibility that it was once the nucleus of a galaxy that was absorbed into the Milky Way. The recent discoveries of pulsars in this globular cluster and their association with known X-ray sources was a hint that, given the large number of known X-ray sources, there is a much larger undiscovered pulsar population. We used the superior sensitivity of the MeerKAT radio telescope to search for pulsars in Omega Centauri. In this paper, we present some of the first results of this survey, including the discovery of 13 new pulsars; the total number of known pulsars in this cluster currently stands at 18. At least half of them are in binary systems and preliminary orbital constraints suggest that most of the binaries have light companions. We also discuss the ratio between isolated and binaries pulsars and how they were formed in this cluster.