Parkes observations for project P971 semester 2024APRS_02

We propose further 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 analysis of existing data has already revealed the first detection of Lense-Thirring precession in a binary star system, and hinted at complex emission beam structure probed via geodetic precession. Further timing of this system for the next few years is needed for studies of these effects at higher precision.

我们提议对相对论性脉冲星-白矮星双星系统PSR J1141−6545开展进一步的计时观测。该独特系统为研究多领域物理学问题提供了广阔契机，涵盖相对论现象、脉冲星辐射锥特性研究，乃至视线方向上的星际等离子体结构与分布等范畴。现有数据分析已首次在双星系统中探测到兰斯-蒂林进动（Lense-Thirring precession），并通过测地进动观测间接暗示了复杂辐射束结构的存在。为以更高精度对上述效应展开研究，未来数年需对该系统开展持续计时观测。