Parkes observations for project P971 semester 2023OCTS_04

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 Parkes Ultra Wide Band Low Frequency (UWL) receiver has opened up the possibility of performing the first-ever studies of its orbital dynamics at high temporal resolution. Our analysis of data obtained to date suggests that the pulsar will precess away from our line-of-sight before 2023. Hence, regular observations are crucial to maximize science outcomes with this source.

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。这一独特的双星系统可支撑广泛的物理学研究，涵盖相对论现象、脉冲星辐射锥研究，以及视线方向上星际等离子体的结构与分布。帕克斯超宽频低频（UWL）接收机为首次以高时间分辨率开展该系统的轨道动力学研究提供了可能。我们对截至目前获取的观测数据的分析表明，该脉冲星将于2023年前偏离我们的视线方向发生进动。因此，开展常态化观测对最大化利用该源的科学产出至关重要。