Parkes observations for project P1050 semester 2020APRS_25

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.

本函为申请观测时长，用于对HTRU巡天（HTRU Survey，P630）银道面低纬度区域经重新处理后所发现脉冲星（pulsar）的首次后续跟进观测工作。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颗潜在的此前未被发现的脉冲星候选体。通常而言，新发现的脉冲星仅在完成证认并开展后续计时观测项目后，方能产出具备科学价值的研究成果。对任意新发现脉冲星完成全面特性表征的最短时长要求为一年的初始计时观测，这对于推导脉冲星的特征年龄、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而言，均为必不可少的环节。本后续观测与计时项目，是对HTRU银道面巡天中发现的各类具有科学价值的脉冲星系统开展后续研究的必要支撑。由于本次观测清单中的所有脉冲星均为首次开展跟进观测，因此将产出全新且极具突破性的科研成果。此外，本计时观测项目还可实现对银道面脉冲星种群的大规模普查，进而探索脉冲星参数空间的真实边界。