Parkes observations for project P1054 semester 2023OCTS_07

With this proposal we ask time to continue our timing follow-up campaign of pulsars discovered with the MeerKAT telescope. Twentyfive sources have been discovered in targeted observations of Fermi unidentified point sources, one in association with a Supernova Remnant, 13 in the Magellanic Clouds, 72 in Globular Clusters and 78 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.

本提案申请观测时长，以延续对使用MeerKAT望远镜发现的脉冲星（pulsar）开展的计时后续观测项目。本次共发现25颗脉冲星，均来自费米未证认点源的靶向观测；另有1颗与超新星遗迹（Supernova Remnant）成协，13颗位于麦哲伦云（Magellanic Clouds），72颗位于球状星团（Globular Clusters），78颗则来自银道面巡天。本次新发现的脉冲星中，绝大多数为再循环脉冲星（recycled pulsars，其中至少包含1个双中子星系统（double neutron star system）与多颗"蜘蛛型"双星（spider binaries）），其余则为年轻脉冲星（young pulsars）。计时观测对于充分挖掘每一颗脉冲星发现的全部科学潜力具有核心作用：通过计时观测可精确测定其自转参数、天体测量参数与轨道参数，进而为我们深入理解极端环境下的物理规律以及整体中子星（neutron star）族群的分布与特性提供强有力的研究手段。帕克斯望远镜（Parkes Telescope）搭载的UWL接收机（UWL receiver）是一台高灵敏、多用途的观测设备，可助力我们成功对这批新发现的脉冲星开展计时观测，这批源均属于TRAPUM巡天发现的亮源范畴。