Parkes observations for project P1054 semester 2022APRS_10

With this proposal we ask time to continue our timing follow-up campaign of pulsars discovered with the MeerKAT telescope. Fourteen sources have been discovered in targeted observations of Fermi unidentified point sources, three in the Small Magellanic Cloud, 37 in Globular Clusters and 34 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.

本提案申请观测时长，以持续开展对MeerKAT望远镜发现的脉冲星的计时随访观测项目。其中，在费米（Fermi）未证认点源的靶向观测中发现14颗源，小麦哲伦云（Small Magellanic Cloud）中发现3颗，球状星团（Globular Clusters）中发现37颗，银道面（Galactic plane）巡天中发现34颗。本次新发现的脉冲星中，多数为再循环脉冲星（包括至少1个双中子星系统与多颗"蜘蛛"双星系统脉冲星），或是年轻脉冲星。计时观测对于充分挖掘每一次脉冲星发现的科研价值至关重要：它能够精准测量脉冲星的自转、天体测量与轨道参数，进而为我们研究极端环境下的物理规律，以及整体中子星族群特性提供强有力的研究工具。帕克斯（Parkes）望远镜的UWL接收机是一台高灵敏度、多功能的设备，能够成功对这批TRAPUM巡天亮端发现的新脉冲星开展计时观测。此外，UWL接收机还具备独特优势，可对所谓"蜘蛛"脉冲星的食现象开展细致研究——这类脉冲星约占本项目拟随访源总数的三分之一。