Parkes observations for project P971 semester 2022OCTS_06

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开展进一步计时观测。该独特系统可为多领域物理研究提供观测契机，涵盖相对论现象、脉冲星辐射锥特性分析，乃至视线方向上星际等离子体的结构与分布。对已有数据的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（geodetic precession）的观测暗示了复杂的辐射束结构。为在更高精度下对上述物理效应开展研究，未来数年内需对该系统进行进一步计时观测。