Parkes observations for project P1365 semester 2025OCTS_07

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先导性一次巡天（浅度巡天）取得成功演示后，SMART脉冲星巡天项目的二次数据处理工作已正式启动。该项目将针对80分钟的观测数据开展深度巡天搜索。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），这一发现数量是一次巡天初始发现量的三倍，同时也彰显了这项南天球首次平方公里阵列低频阵（SKA-Low）频段脉冲星巡天项目的巨大潜力。为获取新脉冲星的自转参数与天体测量参数，并筛选出适合开展详细后续研究的目标天体，所有新发现的脉冲星均需要进行计时观测。由于未来一年内，默奇森宽场阵列（MWA）将不再支持常规脉冲星观测，因此后续的计时观测工作需要依托其他望远镜开展。拥有相同天区覆盖范围、灵敏度与宽频覆盖能力的帕克斯（Parkes）穆里扬（Murriyang）望远镜，是开展SMART项目发现脉冲星计时观测的最优选择。我们已于上学期通过先导性项目验证了穆里扬望远镜的适配性，目前正将该项目扩展至包含先导项目中2颗脉冲星在内的共10颗脉冲星样本。相关观测数据还将支持我们开展脉冲轮廓、偏振特性以及约100 MHz至4 GHz频段内流量密度的研究。相关分析与研究成果将被收录于一篇正在筹备的学术论文中，该论文将详细阐述深度巡天数据处理流程，并报告首批脉冲星的发现成果。