Parkes observations for project P1032 semester 2020OCTS_09

This project aims to perform rapid measurements of relativistic parameters of southern binary pulsar systems enabling measurement of their component masses, using data from the Parkes Ultra-Wideband Low (UWL) receiver and the MeerKAT telescope. We will use the UWL data to obtain significant orbital coverage on these pulsars and obtain crucial constraints on orbital and temporal DM variations that will help in constraining the nature of the companion. We will then use MeerKAT data at crucial orbital phases to improve our chances of measuring relativistic parameters, and hence the component masses. 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）接收机与MeerKAT望远镜的数据，对南部脉冲双星系统的相对论参数开展快速测量，从而实现其组成天体质量的测定。我们将通过UWL数据获取这些脉冲星的充分轨道覆盖，并对轨道及时间色散量（DM）变化施加关键约束——这将助力限定伴星的性质。随后，我们将在关键轨道相位利用MeerKAT数据，提升相对论参数（进而测定组成天体质量）的测量成功率。已测定的中子星（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学具有深远意义。