Parkes observations for project P860 semester 2014APRS
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This is a request for observing time for the initial follow-up of pulsar discoveries from the low-latitude Galactic plane section of the HTRU survey (P630). We have already discovered 40 pulsars from just 30% of processed data. Extrapolation and population synthesis show that the Galactic plane survey will result in at least a further 120 discoveries. Currently, with data processing on-going employing all available computing resources, we expect about 20 new discoveries per semester. The discovery of pulsars is just a ?rst step and interesting science can usually only be revealed when a follow-up timing campaign is carried out. One year of initial timing is the minimal timespan required to fully-characterise any newly-discovered pulsars, essential for deriving pulsar parameters such as the characteristic age, magnetic ?eld strength, spin-down rate, as well as to detect any unexpected behaviour of the pulsar which might result from emission instabilities. This follow-up timing project is necessary for identifying any individual interesting pulsar systems discovered from the HTRU Galactic plane survey. Since all of the pulsars on the observing list here are followed-up for the ?rst 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 phase space. Given the large number of discoveries expected and the long integration length required, this dedicated follow-up timing campaign is vital for achieving our science goals.
本申请旨在为HTRU巡天(High Time Resolution Universe Survey,P630)的低银纬银道面片区中已发现脉冲星的首批后续观测申请观测时长。目前我们仅在已处理的30%数据中就已发现40颗脉冲星。通过外推法与种群合成分析可知,本次银道面巡天预计至少还将发现120颗脉冲星。当前我们正动用全部可用计算资源开展数据处理,预计每学期可新发现约20颗脉冲星。脉冲星的发现仅为第一步,唯有开展后续的计时观测项目,方能揭示其蕴含的关键科学价值。对新发现的脉冲星开展为期一年的初始计时观测,是完整表征其物理特性的最低时长要求——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均至关重要。本次后续计时项目对于甄别HTRU银道面巡天中发现的各类极具科研价值的脉冲星系统而言不可或缺。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,其研究成果将具备全新的科学价值与突破性意义。此外,本计时项目可实现对银道面脉冲星种群的大规模普查,深入探索脉冲星相空间的真实边界。鉴于预计发现的脉冲星数量众多且所需积分时长较长,本次专属后续计时观测项目对于达成我们的科学目标而言至关重要。



