Parkes observations for project P1054 semester 2021APRS_03

With this proposal we ask time for a timing follow-up campaign of the first 5 mllisecond pulsars discovered in the TRAPUM (TRAnsients and PUlsars with Meerkat) survey. The sources have been detected in targeted observations of Fermi unidentified point sources. At least two of the new pulsars belong to binary systems and an initial orbital period of 8.5 hrs has already been estimated for the brightest source. 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 will allow 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, the vast majority of which have an associated Fermi counterpart.

本提案申请开展针对TRAPUM（TRAnsients and PUlsars with Meerkat）巡天中发现的首批5颗毫秒脉冲星的计时随访观测项目。这些源是在对费米（Fermi）未证认点源的靶向观测中被探测到的。其中至少2颗新脉冲星属于双星系统，且已为最亮的那颗源估算出初始轨道周期为8.5小时。计时观测对于充分挖掘任意脉冲星发现的全部科学潜力具有核心作用，可实现对自转参数、天体测量参数及轨道参数的精准测量，进而为我们深化对极端环境物理规律以及整体中子星族群的认知提供强有力的研究手段。帕克斯望远镜（Parkes telescope）的UWL接收机是一台高灵敏度、多功能的观测设备，能够对TRAPUM巡天发现的亮端这批新源开展成功的计时观测。UWL接收机还具备独特优势，可用于对所谓“蜘蛛”脉冲星（spider pulsar）的掩食现象开展详细研究，这类脉冲星绝大多数都存在对应的费米对应源。