Parkes observations for project P885 semester 2019APRS_04

We propose to observe the magnetars 1E 1547.0-5408 and PSR J1622-4950
approximately weekly, to track their rotation, flux density, and
polarisation, as we have been doing through this project. As of
this week (8 Dec 2018), XTE J1810-197 is again a radio magnetar,
after 10 years dormant! (We have been observing it sporadically
during its low state waiting for such an event.) Its likely chaotic
rotation will be better tracked in detail elsewhere, but weekly
observations with the UWL receiver will provide unique measurements
of its radio spectrum and broad-band behaviour. Our observations
provide an important window into remarkably dynamic magnetar
magnetospheres, and characterise the conditions under which radio
emission takes place therein, placing constraints on the emission
mechanisms, which in at least some significant respects differ from
those of ordinary pulsars.