Parkes observations for project P1032 semester 2022OCTS_01

This project aims to continue to perform rapid measurements of relativistic parameters of southern binary pulsar systems using data from the Parkes Ultra Wideband Low (UWL) receiver and the MeerKAT telescope thereby enabling measurement of their component masses and in some cases, test theories of gravity. We will use the UWL data to obtain significant orbital coverage and timing baseline on these pulsars and obtain important constraints on orbital and temporal DM variations that will help in identifying the nature of the companion star. We will then use MeerKAT data at crucial orbital phases to improve our chances of measuring the relativistic parameters. Increase in the number of measured NS masses has profound implications for NS internal structure and for stellar and binary evolution physics.

本项目旨在利用帕克斯超宽带低频（UWL）接收器与MeerKAT望远镜的数据，持续对南半球双脉冲星系统的相对论参数进行快速测量，从而实现对其组件质量的测定，并在部分案例中检验引力理论。我们将借助UWL数据获取这些脉冲星的显著轨道覆盖范围与计时基线，同时得到对轨道及时间色散量（Dispersion Measure, DM）变化的重要约束，这将有助于识别伴星的性质。随后，我们将利用MeerKAT在关键轨道相位的数据，提升测量相对论参数的成功率。已测中子星（Neutron Star, NS）质量数量的增加，对中子星内部结构及恒星与双星演化物理具有深远意义。