Parkes observations for project P1006 semester 2019APRS_10

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.

本研究拟依托安装于帕克斯（Parkes）望远镜的超宽带宽低频接收机（ultra-wide-bandwidth, low-frequency receiver），开展首次针对球状星团内脉冲星的超高时间分辨率相干去色散搜寻工作。我们筛选出11个最具新脉冲星发现潜力的球状星团作为观测目标。这些星团目前均已至少发现3颗已知脉冲星，可让我们精准估算脉冲星的色散量（dispersion measure）；同时本次观测将首次实现对这些星团内脉冲星的超宽带宽探测。我们采用的观测策略可支持搜寻极窄脉冲星，乃至亚毫秒周期脉冲星。