Parkes observations for project P1050 semester 2021OCTS_23

This is a request for observing time for the timing campaign of new pulsar discoveries from the reprocessing of the low-latitude Galactic plane section of the HTRU survey (P630). We have now completed 90 % of the survey with GPU based coherent acceleration search, template bank and fast folding algorithm pipelines, and now have discovered 92 previously unknown pulsars and 8 "class A" pulsars awaiting confirmation. Interesting science can usually only be derived from a new pulsar after confirmation and a follow-up timing campaign is carried out. One year of initial timing is the minimum timespan required to fully characterise any newly-discovered pulsars, essential for deriving pulsar parameters such as the characteristic age, magnetic field strength, spin-down rate, as well as to detect any unexpected behaviour of the pulsar which might result from emission instabilities. Pulsars on the observing list here have been confirmed in the previous and current 2021APRS semesters, the follow-up timing in OCTS2021 will produce completely new and exciting results. In addition, this timing project will allow us to measure the true Galactic plane pulsar population and the boundaries of pulsar parameter space in the galactic plane.

本申请为针对HTRU巡天（HTRU survey，P630）低银道面银河盘面区段数据再处理所发现的新脉冲星开展计时观测项目，特申请对应观测时长。我们已基于GPU加速的相干加速搜索、模板库及快速折叠算法流程完成该巡天90%的数据处理工作，目前已发现92颗此前未被发现的脉冲星，以及8颗待确认的"A类"脉冲星。通常而言，新发现的脉冲星仅在完成确认并开展后续计时观测项目后，才能产出有科学价值的研究成果。对任意一颗新发现脉冲星开展至少一年的初始计时观测，是完整表征其各项参数的最低时间要求——这对于推导脉冲星特征年龄、磁场强度、自转减速率等关键参数，以及探测可能由辐射不稳定性引发的脉冲星异常行为均至关重要。本次观测列表中的脉冲星已在2021APRS学期的前期及当前观测中完成确认，于OCTS2021开展的后续计时观测将产出全新且极具价值的科学成果。此外，本计时项目还将帮助我们实测银河盘面内的脉冲星真实种群分布，以及脉冲星参数空间在银河盘面中的边界范围。