Parkes observations for project P971 semester 2018OCTS_14

We propose timing observations of the relativistic pulsar - white-dwarf binary PSR J1141-6545. This unique system offers access to a wide range of physics, from relativistic phenomena through pulsar emission cone studies, to the structure and distribution of interstellar plasma along our line-of-sight. The recently installed Parkes Ultra Wide Band Low Frequency (UWL) receiver has opened up the possibility of performing first-ever studies of its orbital dynamics at high temporal resolution and study of the effects of the intra-binary medium on the dispersion and polarisation of the pulse profile. Our analysis of data obtained to date suggests that the pulsar would precess away from our line-of-sight in the next 3-5 years. Hence, regular observations are crucial to maximizing its science outcome

我们提议对相对论性脉冲星-白矮星双星系统PSR J1141-6545开展计时观测。该独特系统为研究多领域物理现象提供了契机，涵盖相对论效应、脉冲星辐射锥特性分析，以及视线方向上星际等离子体的结构与分布规律。近期安装的帕克斯超宽带低频（UWL）接收机，为首次以高时间分辨率探究其轨道动力学特征，以及研究双星内部介质对脉冲轮廓色散与极化的影响创造了可能。我们对现有数据的分析显示，未来3-5年内该脉冲星将通过进动偏离我们的视线方向。因此，定期观测对于最大化其科学产出具有关键意义。