Parkes observations for project P885 semester 2024APRS_10

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.

我们申请对两颗射电磁星（radio magnetars）维持每10天一次的适度监测频次，以追踪其自转状态、通量密度与偏振特性。其中1E 1547.0-5408近期的辐射特性与自转均出现了异常小幅波动，针对此次事件的中期响应机制仍不明朗。Swift J1818.0-1607仍保持高度活跃状态，其独特的UWL观测能力为探究磁星中至今仍神秘莫测的射电辐射机制提供了新的契机。对于已停止射电辐射一年之久的XTE J1810-197与PSR J1622-4950，我们将降低其观测频次。本次观测申请总时长为18小时。