Parkes observations for project P885 semester 2019OCTS_06

We propose to observe the magnetars 1E 1547.0-5408 and PSR J1622-4950\r\napproximately weekly, to track their rotation, flux density, and\r\npolarisation, as we have been doing through this project. Also, as\r\nof late 2018, XTE J1810-197 is again a radio magnetar after 10 years\r\ndormant! Its chaotic rotation is better tracked in detail elsewhere,\r\nbut weekly observations with the UWL receiver are already providing\r\nunique measurements of its radio spectrum and broad-band behaviour.\r\nOur observations provide an important window into remarkably dynamic\r\nmagnetar magnetospheres, and characterise the conditions under which\r\nradio emission takes place therein, placing constraints on the\r\nemission mechanisms, which in at least some significant respects\r\ndiffer from those of ordinary pulsars.

我们提出将对磁星（magnetar）1E 1547.0-5408与PSR J1622-4950开展约每周一次的观测，以追踪它们的自转、流量密度与偏振（polarisation）特性，正如本项目此前一直开展的观测工作。
此外，自2018年末起，沉寂十年的XTE J1810-197再度成为射电磁星！
尽管其混乱的自转细节可在其他研究中得到更细致的追踪，但利用UWL接收机开展的每周观测，已经为其射电频谱与宽频行为提供了独一无二的测量数据。
本次观测为探究极具动态性的磁星磁层（magnetosphere）提供了重要窗口，同时刻画了其内部射电辐射发生的环境条件，对辐射机制形成约束——而该机制在若干关键方面与普通脉冲星（pulsar）存在显著差异。