Parkes observations for project P455 semester 2022APRS_01

This project is to continue timing and profile studies of the first double-pulsar system, a unique laboratory for gravitational physics. Recent results, including the first measurements of higher-order light-propagation effects and of the relativistic deformation of the orbit, highlight the importance of a long term observational campaign for this remarkable system. The main aims of this proposal are to exploit the high sensitivity of the UWL receiver to provide the strongest tests to date for general relativity and to measure for the first time the moment-of-inertia of a neutron star. Additionally, we will search for the reappearance of the B pulsar.

本项目旨在延续对首个双脉冲星系统（double-pulsar system）的计时与轮廓研究，该系统是引力物理学研究的独特天然实验室。近期取得的观测研究成果——包括首次测量高阶光传播效应与轨道相对论性形变——凸显了针对该特殊天体系统开展长期观测计划的重要意义。本项目申请的核心目标在于依托UWL接收机（UWL receiver）的高灵敏度，为广义相对论（general relativity）提供截至当前最为严苛的检验，并首次实现对中子星转动惯量（moment-of-inertia）的测量。此外，我们还将搜寻脉冲星B（pulsar B）的重现信号。