Parkes observations for project P1365 semester 2025OCTS_09

Following the successful demonstration of a pilot first-pass (shallow) search of a small fraction of the sky, the second-pass processing has commenced for the SMART pulsar survey, which involves deep searches of 80-minute observations. The processing over the past year has led to the discovery of 11 new pulsars (including two millisecond ones), thus tripling the initial count from the first pass, and hinting at the exciting promise of this first southern-sky pulsar survey in the frequency band of SKA-Low. All new pulsars need to be timed in order to determine their spin and astrometric parameters and to select specialised targets for detailed follow-ups. With the MWA no longer supporting routine pulsar observations for the coming year, timing follow-ups rely on other telescopes. The Parkes \\emph{Murriyang} telescope, with an identical sky coverage, sensitivity and the wide frequency coverage, offers the best option to time SMART discoveries. We have demonstrated \\emph{Murriyang's} suitability for this through a pilot project last semester and are now extending the project to a larger sample of 10 pulsars including two from the pilot project. The data will also allow us to study pulse profiles, polarisation, and flux densities from $\\sim$100 MHz to 4 GHz. The analysis/results will be included in a publication in preparation that will detail the deep-search pipeline and report on initial pulsar discoveries.在对小部分天区开展的首轮（浅度）巡天试点搜索顺利完成后，SMART脉冲星巡天项目的第二轮数据处理工作已正式启动，该轮处理将针对80分钟观测数据开展深度搜索。过去一年的处理工作已成功发现11颗新脉冲星（其中包含2颗毫秒脉冲星），发现数量为首轮巡天初始计数的三倍，这一成果彰显了这项南半球首次在SKA-Low频段开展的脉冲星巡天项目的巨大潜力。为确定这些新脉冲星的自转与天体测量参数，并筛选出适合开展后续详细研究的目标天体，需对所有新发现的脉冲星进行计时观测。由于未来一年内默奇森宽场阵列（Murchison Widefield Array, MWA）将不再支持常规脉冲星观测，后续的计时观测工作需依托其他望远镜开展。帕克斯（Murriyang）望远镜拥有与SMART巡天匹配的天区覆盖范围、灵敏度及宽频段覆盖能力，是对SMART项目发现的脉冲星开展计时观测的最优选择。我们已于上学期通过试点项目验证了Murriyang望远镜在此类观测中的适用性，目前正将该项目的观测样本扩展至10颗脉冲星，其中包含试点项目中的2颗。此次获取的观测数据还将支持我们开展从约100 MHz到4 GHz频段内的脉冲轮廓、偏振特性以及流量密度研究。相关分析与研究结果将被收录于一篇待发表的论文中，该论文将详细阐述深度搜索流程，并汇报首批脉冲星的发现成果。