Parkes observations for project P885 semester 2024APRS_07

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 magnetar）维持每10天一次的适度监测频次，以追踪其自转、流量密度及偏振（polarisation）特性。1E 1547.0-5408近期在辐射特性与自转方面均出现了一次“起伏扰动”，目前该事件的中期响应机制仍不明确。Swift J1818.0-1607仍保持较高活跃性，其独有的UWL功能为探究磁星中尚未阐明的射电辐射机制提供了全新契机。对于已在一年前停止辐射的XTE J1810-197与PSR J1622-4950，我们将降低监测频率。本次观测申请总时长为18小时。