Parkes observations for project P885 semester 2019OCTS_02

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.

我们提议对磁星（magnetar）1E 1547.0-5408与脉冲星PSR J1622-4950开展约每周一次的观测，以追踪其自转、流量密度与偏振特性，一如本项目此前持续开展的观测工作。
此外，截至2018年末，沉寂十年的XTE J1810-197已重新成为射电磁星！尽管其紊乱的自转细节可在其他研究中得到更精细的剖析，但借助超宽频接收机（UWL receiver）开展的每周观测，已为其射电频谱与宽带行为提供了独有的测量数据。
本项目的观测为探究极具动态性的磁星磁层提供了关键窗口，同时刻画了其中射电辐射发生的环境条件，进而对辐射机制施加约束——该机制在若干重要方面与普通脉冲星存在显著差异。