Parkes observations for project P1006 semester 2019APRS_31

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.

我们提议使用安装于帕克斯望远镜（Parkes Telescope）的超宽带（ultra-wide-bandwidth）低频接收机（low-frequency receiver）开展观测，以首次实现对球状星团（globular clusters）内脉冲星（pulsars）的超高时间分辨率（ultra-high time resolution）相干去色散（coherent de-dispersed）搜索。我们选定了11个最有望实现新发现的球状星团作为观测对象，这些星团均已至少发现3颗已知脉冲星，这使得我们能够精准估算脉冲星的色散量（dispersion measure），而本次观测将首次为这些脉冲星提供超宽带观测数据。我们采用的观测策略将能够搜寻极窄脉冲的脉冲星，乃至拥有亚毫秒周期的脉冲星。