Long-term project observations for project P574 semester 2024OCTS_08

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，以达成三个核心科学目标。其一为深入理解脉冲星：它们如何自旋减速、哪些因素会干扰该过程、脉冲轮廓随时间变化的方式与原因、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逊于理想时钟的因素。其二，我们希望通过对色散量（dispersion measure）、旋转量（rotation measure）、流量密度变化的持续监测，并结合闪烁参数，来揭示银河系的星际介质特性。最后，我们将这些数据作为公共资源提供给科研社区：一方面服务于与我们有紧密合作关系的高能物理领域（尤其与费米望远镜Fermi相关团队），另一方面通过CSIRO档案库向广大射电脉冲星天文学家开放。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（共同）作者。这些数据还助力了波尔多、曼彻斯特、牛津、斯坦福及斯威本大学学生的博士论文工作。目前，我们正申请长期项目资质，以期将该项目延续至平方公里阵列望远镜（SKA）时代。