Parkes observations for project P971 semester 2021OCTS_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. From this semester, we are converting this project into a large project proposal. We request the TAC to award us pre-graded status for the next semester.

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。该独特系统为多领域物理研究提供了广阔契机，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等方向。现有数据分析已首次在双星系统中探测到伦泽-蒂林进动（Lense-Thirring precession），并通过测地线进动间接揭示了复杂的辐射束结构。若要以更高精度对上述效应开展研究，未来数年需对该系统开展持续计时观测。自本学期起，我们正将本项目升级为大型项目提案，恳请时间分配委员会（Time Allocation Committee，TAC）为我们授予下一学期的预分级观测资格。