Parkes observations for project P1336 semester 2024OCTS_02

This proposal aims to confirm the periodic radio pulsations of the polarised sources identified in the MeerKAT Bulge imaging survey. Discovering pulsars through blind single-dish radio surveys and traditional search methods can be impractical due to excess pulse smearing towards the Galactic center and the steep-spectrum nature of the pulsars. However, targeted searches on pulsar candidates discovered in imaging surveys based on their polarization properties are proving to be an extremely useful alternative. Given their potential visibility primarily at higher frequencies due to the less pronounced effect of scattering at these frequencies, the Ultra Wide Low Band (UWL) receiver of the Parkes Radio Telescope (Murriyang) is the most promising instrument to confirm their pulsar nature. We hence request Parkes/Murriyang UWL observations of these candidates to search for pulsations.

本申请旨在确认米尔卡特（MeerKAT）银河隆起区成像巡天中识别出的偏振源的周期性射电脉冲信号。受银心方向显著的脉冲展宽效应与脉冲星（pulsars）陡谱特性影响，通过盲单天线射电巡天及传统搜寻方法发现脉冲星的方案往往难以实施。不过，基于偏振特性对成像巡天中发现的脉冲星候选体（pulsar candidates）开展靶向搜寻，已被证明是极具实用价值的替代途径。鉴于此类候选体在高频段的散射效应更弱，因而具备更高的观测可见性，帕克斯射电望远镜（Murriyang）的超宽低频接收机（Ultra Wide Low Band, UWL）是确认其脉冲星属性的最具前景的观测设备。因此，我们申请利用帕克斯/Murriyang望远镜的UWL接收机对上述候选体开展观测，以搜寻脉冲信号。