Parkes observations for project P834 semester 2018OCTS_02

Finding the pulsar born in SN 1987A would be of major significance. It would be by far the youngest pulsar known and would enable unique investigations of the early evolution and birth properties of a pulsar, as well as acting as a probe of the circumstellar and interstellar medium. We propose to use the new Ultra-Wideband Low (UWL) receiver to attempt confirmation of dispersed pulse candidates from previous P834 observations, to search for more isolated (giant) pulses and to continue the search for periodic emission from a pulsar associated with SN 1987A. The UWL receiver, with its much wider bandwidth and much lower system noise compared to the 10cm/50cm system will allow searches with much higher sensitivity.

搜寻1987A超新星（SN 1987A）爆发产生的脉冲星，具有极为重要的科学意义。该脉冲星将是目前已知最年轻的脉冲星，不仅能够助力开展针对脉冲星早期演化与诞生特性的独特研究，还可作为星周介质与星际介质的探测探针。本研究拟采用新型超宽带低（Ultra-Wideband Low, UWL）接收机，尝试对此前P834观测中得到的弥散脉冲候选体进行证认，搜寻更多孤立（巨）脉冲，并持续搜索与1987A超新星相关联的脉冲星的周期性辐射信号。相较于10厘米/50厘米频段系统，该UWL接收机拥有更宽的带宽与更低的系统噪声，可实现灵敏度更高的观测搜寻。