Parkes observations for project P1006 semester 2019APRS_23

We propose observations with the ultra-wide-bandwidth, low-frequency receiver installed at the Parkes telescope to carry out the first ultra-high time resolution, coherently de-dispersed search for pulsars in globular clusters. We have chosen the 11 most likely clusters for new discoveries. These clusters all have at least three pulsars already known allowing us to have a precise estimate of the pulsar dispersion measures and our observations will provide the first ultra-wide-bandwidth observation of these pulsars. Our observing strategy will enable us to search for extremely narrow pulsars and even pulsars with sub-millisecond periods.

本研究提议利用安装于帕克斯（Parkes）望远镜的超宽带低频接收机（ultra-wide-bandwidth, low-frequency receiver），开展针对球状星团（globular clusters）内脉冲星（pulsars）的首次超高时间分辨率（ultra-high time resolution）相干去色散（coherently de-dispersed）搜索工作。我们遴选了11个最具新脉冲星发现潜力的球状星团作为观测目标：这些星团均已探明至少3颗脉冲星，可支撑我们对脉冲星色散量（dispersion measure）的精准估算；同时本次观测还将实现这批脉冲星的首次超宽带观测。本观测方案可支持我们搜寻极窄脉冲星，乃至亚毫秒周期脉冲星。