Parkes observations for project P885 semester 2024APRS_04

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 recently suffered a 'hiccup' in radiative properties as well as in its rotation, and the mid-term response to this event remains unclear. Swift J1818.0-1607 remains quite dynamic, and the unique UWL capabilities provide new opportunities to probe still mysterious radio emission mechanisms in magnetars. We will observe XTE J1810-197 and PSR J1622-4950, which ceased emission a year ago, less frequently. The overall request is 18 hours.

我们请求对两颗射电磁星（radio magnetars）维持每10天一次的适度监测频次，以追踪其自转、流量密度与偏振特性。其中，1E 1547.0-5408近期在辐射特性与自转方面均出现反常异动，此次事件的中期响应机制仍不明朗。Swift J1818.0-1607仍处于高度活跃状态，其独特的UWL观测能力为探究磁星中仍未被阐明的射电辐射机制提供了新的契机。我们将以更低频次观测一年前停止射电辐射的XTE J1810-197与PSR J1622-4950。本次观测申请总时长为18小时。