标题： 高银纬巡天中五颗回收脉冲星的发现 显示英文标题

标题： Discovery of Five Recycled Pulsars in a High Galactic Latitude Survey

摘要： 我们介绍了在使用帕克斯射电望远镜对银河平面15度至30度之间大约4150平方度区域进行21厘米巡天时发现的五个回收脉冲星。 一个新脉冲星PSR J1528-3146具有61毫秒的自转周期和一个大质量白矮星伴星。 像许多具有重伴星的回收脉冲星一样，轨道偏心率相对较高（约0.0002），这与预测较少时间用于圆化过程的演化模型一致。 其余四个脉冲星具有较短的自转周期（3毫秒 < P < 6毫秒）；其中三个可能有白矮星双星伴星，而一个（PSR J2010-1323）是孤立的。 PSR J1600-3053对于其色散量为52.3 pc cm^-3来说相对明亮，并且由于其脉冲轮廓中固有的窄特征，通过相干去色散可以分辨，因此有望实现良好的定时精度。 在这次巡天中，回收脉冲星的发现率是每四天望远镜时间发现一个，或每600平方度天空发现一个。 这些源的变异性表明，通过重复此巡天可能会发现更多的毫秒脉冲星。 显示英文摘要

摘要： We present five recycled pulsars discovered during a 21-cm survey of approximately 4,150 deg^2 between 15 deg and 30 deg from the galactic plane using the Parkes radio telescope. One new pulsar, PSR J1528-3146, has a 61 ms spin period and a massive white dwarf companion. Like many recycled pulsars with heavy companions, the orbital eccentricity is relatively high (~0.0002), consistent with evolutionary models that predict less time for circularization. The four remaining pulsars have short spin periods (3 ms < P < 6 ms); three of these have probable white dwarf binary companions and one (PSR J2010-1323) is isolated. PSR J1600-3053 is relatively bright for its dispersion measure of 52.3 pc cm^-3 and promises good timing precision thanks to an intrinsically narrow feature in its pulse profile, resolvable through coherent dedispersion. In this survey, the recycled pulsar discovery rate was one per four days of telescope time or one per 600 deg^2 of sky. The variability of these sources implies that there are more millisecond pulsars that might be found by repeating this survey.