Parkes observations for project P455 semester 2018APRS_05

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 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 determine the system geometry and map the pulsar beams via geodetic precession. Whenever possible, we will exploit the high sensitivity of the new UWL receiver.

本项目旨在延续对首个双脉冲星系统的计时与轮廓研究——该系统是引力物理学领域独一无二的实验室。近期研究成果（包括首次测得的高阶光传播效应及轨道的相对论性形变）凸显了针对这一非凡系统开展长期观测计划的重要性。本提案的核心目标是提供迄今为止对广义相对论（General Relativity）最严格的检验，并首次测量中子星的转动惯量（moment-of-inertia）。此外，我们将通过测地进动（geodetic precession）确定系统几何结构并绘制脉冲星波束分布图。在条件允许时，我们将充分利用新型UWL接收器的高灵敏度。