Parkes observations for project P971 semester 2018OCTS_BPSR_01

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（relativistic pulsar）-白矮星双星系统PSR J1141-6545开展计时观测研究。该独特双星系统可覆盖多维度物理学研究范畴，涵盖相对论现象、脉冲星辐射锥研究，以及视线方向（line-of-sight）上星际等离子体的结构与分布特征。新近安装的帕克斯（Parkes）超宽频低频接收机（Ultra Wide Band Low Frequency, UWL），为开展该系统的首次高时间分辨率轨道动力学（orbital dynamics）研究，以及探究双星内部介质（intra-binary medium）对脉冲轮廓（pulse profile）色散与偏振的影响提供了可能。我们对迄今获取的观测数据开展的分析表明，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该系统的科学产出至关重要。