Parkes observations for project P1054 semester 2022OCTS_19

With this proposal we ask time to continue our timing follow-up campaign of pulsars discovered with the MeerKAT telescope. Eighteen sources have been discovered in targeted observations of Fermi unidentified point sources, six in the Small Magellanic Cloud, 54 in Globular Clusters and 66 in a survey of the Galactic plane. A large fraction of the new discoveries are recycled pulsars (including at least one double neutron star system and several 'spider' binaries), or young pulsars. Timing observations have an essential role in exploiting the full potential of any pulsar discovery, allowing the precise measurement of rotational, astrometric and orbital parameters which, in turn, give us powerful tools to improve our understanding of the physics in extreme environments as well as of the population of neutron stars as a whole. The UWL receiver of the Parkes telescope is a sensitive, versatile instrument that is allowing us to successfully time these new sources, in the bright-end of TRAPUM discoveries. The UWL has also the unique advantage of allowing detailed studies of the eclipses of the so-called 'spider' pulsars, which make up about 1/3rd of the sources we aim at following-up with this project.

本提案旨在申请时间，继续对MeerKAT望远镜发现的脉冲星开展计时后续观测。其中18个源来自费米未识别点源的靶向观测，6个位于小麦哲伦云（Small Magellanic Cloud），54个在球状星团（Globular Clusters），66个来自银道面（Galactic plane）巡天。新发现的脉冲星中，大部分为回收脉冲星（recycled pulsars）——包括至少一个双中子星系统（double neutron star system）及若干‘蜘蛛’双星（spider binaries）——或年轻脉冲星（young pulsars）。计时观测（timing observations）对于充分挖掘脉冲星发现的潜力至关重要，它能实现对旋转、天体测量及轨道参数的精确测量，而这些参数反过来为我们提供了理解极端环境物理过程及中子星整体群体的有力工具。帕克斯望远镜（Parkes telescope）的UWL接收器是一款灵敏且多功能的仪器，可成功对这些新源进行计时观测，尤其是针对TRAPUM发现中的亮端源。UWL还具备独特优势，能够详细研究所谓‘蜘蛛’脉冲星的掩食现象，这类源约占本项目后续观测目标的三分之一。