Parkes observations for project P1050 semester 2020APRS_15

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.

本申请为针对HTRU巡天（HTRU Survey，P630）银道面低纬度区域再处理所发现的脉冲星开展首次后续观测的时间申请。我们已利用基于GPU的相干加速搜索与模板库搜索流程，完成该巡天60%区域的首轮再处理，发现了54颗此前未被记录的潜在脉冲星。通常而言，新发现的脉冲星需经确认并开展计时观测项目后，才能产出有价值的科学成果。针对新发现脉冲星开展为期一年的首次计时观测，是完全表征该类天体的最低时间要求，这一过程对获取脉冲星特征年龄、磁场强度、自转减慢速率等核心参数至关重要，同时还可探测脉冲星因辐射不稳定性引发的各类异常行为。本后续观测与计时项目，是跟进HTRU银道面巡天中发现的所有具有科学价值的脉冲星系统的必要环节。由于本次观测列表中的所有脉冲星均为首次开展后续观测，本项目将产出全新且极具科学意义的研究成果。此外，该计时项目还可实现对银道面脉冲星族群的大规模普查，进而探究脉冲星参数空间的真实边界。