Parkes observations for project P1050 semester 2020OCTS_08

This is a request for observing time for the timing campaign of new pulsar discoveries and follow-up of expected new potential pulsars from the re-processing of the low-latitude Galactic plane section of the HTRU survey (P630). We have now completed the first pass re-processing of the 62 % of the survey with GPU based coherent acceleration search and template bank search pipelines, and have discovered 51 previously unknown pulsars.\r\nInteresting 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. This timing project is necessary for following up on any interesting pulsar systems discovered from the HTRU Galactic plane survey. Since all of the pulsars on the observing list here have been confirmed in the current 2020APRS semester, the follow-up timing will produce completely new and exciting results. In addition, this timing project will enable a large-scale examination of the Galactic plane pulsar population, exploring the true boundaries of pulsar parameter space in the galactic plane.

本申请旨在为HTRU（High Time Resolution Universe Survey）巡天（P630项目）银道面低纬度区域再处理中发现的新脉冲星 (pulsar)，以及待发掘的潜在新脉冲星，申请用于后续计时观测的观测时长。目前，我们已依托基于GPU的相干加速搜索（coherent acceleration search）与模板库搜索（template bank search）流程，完成了该巡天62%区域的首轮再处理，并新发现51颗此前未被记录的脉冲星。

通常而言，新发现的脉冲星仅在得到确认并开展后续计时观测后，方能产出有科学价值的科研成果。对任意新发现脉冲星开展至少一年的初始计时观测，是完整刻画其各项物理属性的最低时长要求——这对于推导脉冲星的特征年龄、磁场强度、自转减速率（spin-down rate）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。本计时项目对于跟进HTRU银道面巡天中发现的各类值得关注的脉冲星系统而言必不可少。鉴于本次观测列表中的所有脉冲星均已在2020APRS学期完成确认，本次后续计时观测将产出全新且极具突破性的科研成果。此外，本计时项目还将支持对银道面脉冲星种群开展大规模普查，探索银道面内脉冲星参数空间的真实边界。