Long-term project observations for project P574 semester 2024APRS_03

We request time to observe 270 pulsars on a regular basis in order to achieve three main science goals. The first is to understand pulsars: how do they spin down and what disrupts this process, how and why their profiles vary with time, whether they precess or have planetary mass companions, in short all the things that make pulsar timing noisier than the perfect clock. Secondly we want to understand the interstellar medium of our Galaxy through repeated monitoring of dispersion measure, rotation measure and flux density variations in conjunction with scintillation parameters. Finally, we provide these data as a community service both to the high-energy community where we have strong collaborative links (particularly to Fermi) and to the radio pulsar astronomers generally through the CSIRO archive. The project is on-going since 2007, we are (co-)authors on 106 papers arising from the P574 data. The data have contributed to the PhD theses of students from Bordeaux, Manchester, Oxford, Stanford, and Swinburne. We are seeking long-term project status with a view to continuing the project into the SKA era.

我们申请定期观测270颗脉冲星的时间，以实现三大科学目标。其一为深化对脉冲星的认知：它们如何自旋减速，哪些因素会干扰这一过程；其轮廓随时间变化的规律与成因；是否存在进动现象或行星质量伴星——简言之，所有导致脉冲星计时精度偏离完美时钟的因素，均属此列。其二旨在通过持续监测色散量、旋转量、流量密度的变化，并结合闪烁参数，揭示银河系星际介质的特性。最后，我们将这些数据作为公共资源提供给科研社区：一方面服务于高能物理领域（我们与该领域——尤其是费米望远镜团队——有着紧密的合作联系）；另一方面通过CSIRO档案库向射电脉冲星天文学界开放。该项目自2007年起持续开展，基于P574数据的研究已产出106篇论文，我们为这些论文的（共同）作者。此外，这些数据还助力了波尔多、曼彻斯特、牛津、斯坦福及斯威本等高校学生的博士论文工作。目前，我们正争取该项目的长期地位，以期在SKA时代延续其研究。