Parkes observations for project P1229 semester 2023OCTS_03

We propose a pulsar timing campaign of three millisecond pulsars discovered in previous pulsar searches of Fermi gamma-ray sources. Despite an original follow-up effort, it was not possible to produce a pulsar timing solution with which to detect the expected gamma-ray pulsations. The proposed campaign combines a set of dense, initial observations with additional observations at increasing separation, a bootstrap approach which is generally successful at constraining all the fundamental parameters of the pulsar timing solution. Securing the gamma-ray pulsations will enable probes of the radio and gamma-ray emission mechanisms and searches for multi-wavelength counterparts. And perhaps more importantly, it will allow these pulsars to be incorporated into the gamma-ray pulsar timing array, providing additional baselines which will increase its sensitivity to low-frequency gravitational waves.

我们提出一项针对三颗毫秒脉冲星的计时观测计划，这些脉冲星是在先前对费米伽马射线源的脉冲星搜寻中发现的。尽管曾开展过最初的后续观测工作，但未能获得可用于探测预期伽马射线脉冲信号的脉冲星计时解。本计划将密集的初始观测与间隔逐渐增大的补充观测相结合，采用的自举法（bootstrap approach）通常能成功约束脉冲星计时解的所有基本参数。确认伽马射线脉冲信号的存在将有助于探究射电与伽马射线的辐射机制，并开展多波段对应体的搜寻。更重要的是，这将使这些脉冲星能够被纳入伽马射线脉冲星计时阵列，提供额外基线以提升其对低频引力波的探测灵敏度。