Parkes observations for project P885 semester 2023APRS_02

We request a continued modest monitoring cadence of once every 10 days for two radio magnetars, to track their rotation, flux density, and polarisation. 1E 1547.0-5408 has just suffered a 'hiccup' in radiative properties as well as in its rotation, and the near-term response to this event remains unclear. Swift J1818.0-1607 remains quite dynamic, and the unique UWL capabilities promise new opportunities to probe still mysterious radio emission mechanisms in magnetars. We will observe XTE J1810-197 and PSR J1622-4950, which has just ceased emission, less frequently. The overall request is 18 hours.

我们请求对两颗射电磁星（radio magnetar）维持每10天一次的适度监测频次，以追踪其自转、流量密度（flux density）与偏振（polarisation）特性。1E 1547.0-5408的辐射特性与自转均刚刚经历了一次“异动（hiccup）”，目前针对该事件的短期响应机制仍不明确。Swift J1818.0-1607仍处于高度活跃状态，其独特的UWL观测能力有望为探究磁星（magnetar）中尚未明晰的射电辐射机制提供全新研究契机。我们将以更低的观测频次对刚刚停止辐射的XTE J1818-197与PSR J1622-4950进行观测。本次观测申请总时长为18小时。