Parkes observations for project P971 semester 2023OCTS_06

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.

我们提出对相对论性脉冲星（relativistic pulsar）-白矮星双星系统PSR J1141−6545的计时观测方案。该独特天体系统可支撑多类物理学研究，涵盖相对论现象、脉冲星辐射锥（pulsar emission cone）研究，以及视线方向上星际等离子体（interstellar plasma）的结构与分布等方向。帕克斯（Parkes）超宽频低频（Ultra Wide Band Low Frequency, UWL）接收机为首次开展该系统高时间分辨率（high temporal resolution）轨道动力学（orbital dynamics）研究提供了可能。我们对迄今获取的观测数据的分析表明，该脉冲星将于2023年前进动并偏离我们的视线方向。因此，开展常规观测对于最大化利用该源的科学产出至关重要。