Parkes observations for project P971 semester 2018OCTS_26

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我们提出对相对论性脉冲星-白矮星双星系统PSR J1141-6545开展计时观测研究。该独特系统可支撑多领域物理研究，涵盖相对论现象分析、脉冲星辐射锥研究，乃至视线方向星际等离子体的结构与分布等方向。新近加装的帕克斯超宽频低频（UWL）接收机，首次为我们提供了以高时间分辨率研究其轨道动力学，以及探究双星内部介质对脉冲轮廓色散与偏振影响的可能性。基于现有观测数据的分析表明，该脉冲星将在未来3至5年内进动偏离我们的视线方向。因此，常态化观测对最大化其科学产出至关重要。