Parkes observations for project P1050 semester 2020APRS_30

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（HTRU Survey，P630）银道面低纬度区域重处理所发现的脉冲星开展首次后续观测。目前我们已采用基于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完成身份确认并开展后续计时观测项目后，才能产出具有科学价值的研究成果。为完整表征每一颗新发现脉冲星的物理特性，至少需要开展为期一年的初始计时观测——这对推导脉冲星特征年龄、磁场强度、自转减速率等关键参数，以及探测由辐射不稳定性引发的脉冲星异常行为均至关重要。本次后续观测与计时项目，可对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跟进研究。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学成果。此外，本计时项目还可开展银道面脉冲星种群的大规模普查，探索脉冲星参数空间的真实边界。