Parkes observations for project P860 semester 2015OCTS_BPSR_03
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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 66 pulsars from 55% of processed data. Extrapolation and population synthesis show that the Galactic plane survey will result in at least a further 60 discoveries. Currently, with data processing on-going employing all available computing resources, we expect about 15 new discoveries per semester.\r\n\r\nThe 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.\r\n\r\nThis 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.
本申请为HTRU巡天(High Time Resolution Universe Survey,项目编号P630)银道面低纬度区域新发现脉冲星(pulsar)的首次后续观测申请观测时长。目前我们已在55%的已处理观测数据中发现66颗脉冲星。通过外推分析与种群合成模拟可知,本次银道面巡天预计还将至少新增60颗脉冲星的发现。当前,我们正依托全部可用计算资源推进数据处理工作,预计每学期可新增约15颗脉冲星的发现。 脉冲星的发现仅为研究的起始步骤,唯有开展后续计时观测项目,方能挖掘其蕴含的核心科学价值。对新发现的脉冲星开展为期一年的初始计时观测,是完成其完整特性表征的最短时长要求;这一工作对于推导脉冲星的特征年龄、磁场强度、自转减慢率等关键参数,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。 本后续计时观测项目,是甄别HTRU银道面巡天中发现的各类具有科学意义的脉冲星系统的必要手段。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,本计时观测项目可实现对银道面脉冲星种群的大规模普查,探索脉冲星相空间(pulsar phase space)的真实边界。考虑到预计发现的脉冲星数量庞大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研究目标至关重要。



