Parkes observations for project P1032 semester 2022APRS_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（Parkes Ultra Wideband Low，UWL）接收器与MeerKAT望远镜的数据，持续对南部脉冲双星系统的相对论参数开展快速测量，从而测定其各组成部分的质量，部分情况下还可检验引力理论。我们将借助UWL数据获取这些脉冲星的充分轨道覆盖范围与计时基线，并得到对轨道及时间色散量（Dispersion Measure，DM）变化的重要约束，这将助力确定伴星的性质。随后，我们将在关键轨道相位利用MeerKAT数据，以提升测量相对论参数的成功率。已测量的中子星（Neutron Star，NS）质量数量的增加，对中子星内部结构以及恒星与双星演化物理具有深远意义。