Parkes observations for project P1330 semester 2025APRS_01

We discovered PSR J1716-2808A (NGC6316A), a highly accelerated binary millisecond pulsar (MSP), in the globular cluster NGC6316. We previously used Parkes to solve the orbit of this MSP and are currently timing it (P1330). We have five scheduled observations remaining in the OCT2024 semester. The goal of the proposed observations is to establish a year and a half long timing campaign with at least a year of monthly cadence observations. This is crucial to break the timing degeneracy that occurs between the pulsar's position and the pulsar's spindown rate. We will be able to use this to connect the pulsar to our previous observations spanning back to 2022, thereby creating a three year timing baseline. A secondary advantage of having these observations is that the data can also be used time any new pulsars that are discovered in any subsequent observations.

我们在球状星团NGC6316中发现了PSR J1716-2808A（NGC6316A）——一颗具有高轨道加速度的双星毫秒脉冲星（millisecond pulsar, MSP）。此前我们曾利用帕克斯望远镜（Parkes）求解该脉冲星的轨道参数，目前正对其开展计时观测（项目编号P1330）。我们在2024年10月观测学期还剩余5项预定观测任务。本次申请的观测任务旨在构建为期一年半的计时观测计划，其中至少包含一整年的月度频次观测。这对于破解脉冲星位置与自转减慢率之间存在的计时简并（timing degeneracy）问题至关重要。借此可将该脉冲星与2022年以来的既往观测数据进行关联，进而构建起为期三年的计时观测基线。该观测计划的额外优势在于，所得数据还可用于对后续观测中发现的新脉冲星开展计时分析。