Parkes observations for project P971 semester 2024APRS_01

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.

我们提出对相对论性脉冲星-白矮星双星系统PSR J1141−6545开展进一步的计时观测。该独特双星系统可支撑多维度的物理学研究，涵盖相对论现象、脉冲星辐射锥特性分析，以及视线方向上星际等离子体的结构与分布等领域。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），并通过测地线进动（geodetic precession）观测到复杂辐射束结构的相关迹象。为了以更高精度对上述物理效应展开研究，未来数年内需对该系统开展进一步的计时观测。