Parkes observations for project P1050 semester 2020APRS_07

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.

本申请旨在申请观测时长，用于对HTRU巡天（P630）银道面低纬度区域重新处理中发现的脉冲星开展首次后续观测。目前我们已基于GPU加速的相干加速搜索与模板库搜索流水线，完成了该巡天60%区域的首轮重新处理，并发现了54颗潜在的此前未被发现的脉冲星。通常而言，新发现的脉冲星仅在经过证认并开展后续计时观测项目后，才能产出有价值的科学成果。为完整表征每一颗新发现的脉冲星，至少需要开展为期一年的初始计时观测——这一过程对获取脉冲星特征年龄、磁场强度、自转减速率等参数，以及探测可能由射电辐射不稳定性引发的脉冲星异常行为而言必不可少。本后续与计时观测项目，可用于跟进HTRU银道面巡天中发现的所有具有科学价值的脉冲星系统。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，其相关研究将产出全新且极具意义的成果。此外，本计时观测项目还可实现对银道面脉冲星族群的大规模普查，探索脉冲星参数空间的真实边界。