Parkes observations for project P1006 semester 2019APRS_30

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.

本研究提议使用安装于帕克斯（Parkes）望远镜的超宽带宽低频接收机（ultra-wide-bandwidth, low-frequency receiver），针对球状星团（globular clusters）内的脉冲星（pulsars）开展首次超高时间分辨率相干去色散搜索观测。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。这些星团均已至少发现3颗已知脉冲星，可为我们精准估算脉冲星的色散量（dispersion measures），且本次观测将为这些脉冲星提供首次超宽带宽观测数据。本观测策略将支持我们搜寻脉冲宽度极窄的脉冲星，乃至亚毫秒周期脉冲星。