Parkes observations for project P1330 semester 2024OCTS_06

We discovered PSR J1716-2808A (NGC6316A), a highly accelerated binary millisecond pulsar (MSP), in NGC6316. We are currently observing it with Parkes (P1330) to solve for the orbit. At the time of this proposal submission, we have not yet solved the orbit. We have 6 scheduled observations in August 2024, which we expect to provide a good orbital solution to use in the proposed observations for this proposal. The goal of the proposed observations is to conduct a year long timing campaign. 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. This will also confirm whether the pulsar is a part of the cluster. A secondary advantage of having these observations is that the data can also be used to search for faint pulsars via stack searching and 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）——一颗具有高加速度的双星毫秒脉冲星（millisecond pulsar, MSP）。目前我们正利用帕克斯望远镜（Parkes, P1330）对该源开展观测，以求解其轨道参数。在本提案提交之时，我们尚未完成轨道参数的求解。我们已安排2024年8月的6次观测任务，预期通过这些观测获得可靠的轨道解，以供本提案规划的观测研究使用。本提案规划的观测核心目标为开展为期一年的计时观测计划，这对破除脉冲星位置与自转减慢速率之间存在的计时简并问题至关重要。借此我们可将该脉冲星与2022年以来的既往观测数据进行关联，同时还可验证该脉冲星是否属于NGC6316星团的成员。本观测项目的另一项优势在于，所得数据还可通过叠层搜索（stack searching）技术搜寻暗弱脉冲星，并对后续观测中发现的新脉冲星开展计时研究。