Parkes observations for project P1050 semester 2021OCTS_33

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.

本申请旨在申请观测时长，以开展针对HTRU巡天（P630）银道面低纬度区域重新处理过程中发现的新脉冲星（pulsar）的计时观测计划。目前我们已采用基于图形处理器（Graphics Processing Unit，GPU）的相干加速搜索、模板库与快速折叠算法流程，完成该巡天90%的观测工作，共发现92颗此前未被记录的脉冲星，以及8颗待确认的A级脉冲星。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计划后，才能产出具有科学价值的研究成果。针对任意新发现的脉冲星，至少需要为期一年的初始计时观测，才能完成其完整特性表征——这是推导脉冲星特征年龄、磁场强度、自转减速率等参数，以及探测可能由辐射不稳定性引发的脉冲星异常行为的必要前提。本次观测列表中的脉冲星均已在2021APRS的过往及当学期完成确认，在OCTS2021中开展的后续计时观测将产出全新且极具意义的科研成果。此外，本计时观测项目还将帮助我们测算银道面内真实的脉冲星种群分布，以及脉冲星参数空间在银道面范围内的边界。