Parkes observations for project P1050 semester 2020APRS_04

This is a request for observing time for the initial follow-up of pulsar discoveries from the re-processing of the low-latitude Galactic plane section of the HTRU survey (P630). We have now completed a first pass re-processing of the 60 % of the survey with GPU based coherent acceleration search and template bank search pipelines, and have discovered potential 54 previously unknown pulsars. 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. This follow-up and 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 are being followed-up for the first time, they 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.

本申请旨在为HTRU巡天（HTRU Survey，项目编号P630）银道面低纬度区域重新处理所发现的脉冲星（pulsar）的首次后续观测工作申请观测时间。目前我们已采用基于图形处理器（Graphics Processing Unit，GPU）的相干加速搜索与模板库搜索流程，完成了该巡天60%区域的首轮重新处理，并发现了54颗潜在的此前未被记录的脉冲星。通常而言，新发现的脉冲星唯有经过证认并开展后续计时观测项目后，方能产出具有科学价值的研究成果。首次为期一年的计时观测是完全表征每一颗新发现脉冲星的最低时长要求，这对于获取脉冲星特征年龄、磁场强度、自转减慢速率等关键参数，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。本后续与计时观测项目对于跟进HTRU银道面巡天所发现的各类优质脉冲星系统而言必不可少。由于本次观测清单中的所有脉冲星均为首次开展后续观测，相关研究将产出全新且极具突破性的科研成果。此外，本计时观测项目将支持对银道面脉冲星族群开展大规模普查，探索脉冲星参数空间的真实边界。