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.

我们计划利用安装于帕克斯望远镜（Parkes Telescope）的超宽带低频接收机（ultra-wide-bandwidth, low-frequency receiver）开展观测，以完成球状星团（globular cluster）内脉冲星（pulsar）的首次超高时间分辨率相干去色散搜索。我们遴选了11个最有可能发现新脉冲星的球状星团，这些星团均已发现至少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），而本次观测将首次实现对这些脉冲星的超宽带观测。我们采用的观测策略将支持搜寻脉冲宽度极窄的脉冲星，乃至拥有亚毫秒周期的脉冲星。